Abstract: Described are systems and methods which can be used to indicate the period of time elapsed since the occurrence of a triggering event. More particularly, this application relates to systems and methods which can be used to visually indicate the time period elapsed since an article has been removed from its packaging. The system can include an indicator disposed on or within the article and a trigger disposed within the receptacle and in contact with the indicator. The article may be enclosed within a sealable receptacle of the package. The indicator is responsive to a change in a concentration of the trigger in contact with the indicator.

Abstract: A presbyopia correcting system includes a test lens assembly, a controller and a dynamic lens assembly. The test lens assembly is disposed within or on an eye of a patient and includes measuring device, a transmitter and a first supporting member. The measuring device measures a pressure exerted by an ocular element of the eye and then transmits the data to the controller. A medical provider can then select an appropriate dynamic lens assembly to replace the test lens assembly. The dynamic lens assembly includes a presbyopia correcting optical element configured to change a focus with the pressure exerted by the ocular element of the eye. The dynamic lens assembly also has a second supporting member that is identical to the first supporting member. Replacing the test lens assembly with the dynamic lens assembly then corrects the presbyopia condition of or provide low vision magnification for the patient.

Abstract: A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and/or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

Abstract: A contact lens (318,400,500,600) may include a contact lens body (402), an exterior contact surface (322,404), and an annular bifocal surface (326,408). The contact lens (318,400,500,600) may be configured for use in a contact lens assembly (300) for laser-based ophthalmological surgical treatments. The exterior contact surface (322,404) may be on a first end of the contact lens body (402). The exterior contact surface (322,404) may be configured for direct physical contact with a cornea (102) of an eye (100) of a patient. The annular bifocal surface (326,408) may be on a second end of the contact lens body (402). The second end may be opposite the exterior contact surface (322,404). The annular bifocal surface (326,408) may include a central portion (347,412,502,602). The central portion (347,412,502,602) may include a first focal distance. The annular bifocal surface (326,408) may include an outer portion (349,414,504,604) that surrounds at least a portion of the central portion (347,412,502,602).

Abstract: Gonioscope devices are disclosed herein that are configured to enable a medical professional to view structure inside the eye that is ordinarily hidden from normal view. The gonioscope can be an integrally molded single piece that includes both a handle and a gonioscopic optical element. The proximal surface can have a viewing area and a light diffusing area. A recess can provide access to a wound site on the eye while the gonioscope is used for viewing. The handle can be configured to encourage proper alignment of the gonioscope with the eye. The gonioscope can provide an optical fixation point for the subject to focus on to facilitate proper alignment of the eye. The gonioscope can have one or more retention elements configured to engage the tissue of the eye around the contact surface to stabilize the gonioscope. The gonioscope can couple to a lid speculum.

Abstract: An electronic contact lens. In some embodiments, the electronic contact lens includes a radio antenna and radio receiver contained within the contact lens, the receiver comprising antenna impedance matching and in-phase and quadrature signal generation such that signals from the antenna are projected into in-phase and quadrature components before mixing with a local oscillator signal in the receiver. The electronic contact lens may further include electronic circuits contained within the contact lens, the electronic circuits receiving data from the radio receiver.

Abstract: Devices and method for determining a pupil size of a subject having closed eyelids.

Abstract: A method comprises: disposing a physical landmark upon an eye of a user; capturing at least one image of the eye of the user with an image sensor while the eye is illuminated, wherein the image includes an image of the physical landmark and at least one other point on the surface of the eye outside of the cornea; processing the at least one image to obtain at least one metric of the eye of the user; and determining, based on the at least one metric, at least one parameter of a daily use contact lens to be worn on the eye of the user.

Abstract: Apparatus and methods are provided for interfacing an ophthalmic surgical laser with an eye using a patient interface (PI). The PI may include a closed, fluid-filled bladder having fiducials that contacts and deforms to the eye. Or, the PI may have an applanation lens with an outer ring portion and an inner concave portion for receiving the apex of the cornea. Another PI features a suction ring with a flexible skirt for contacting the sclera that is non-circular and/or non-planar. A system for injecting an index matching fluid into the area above the eye may also be incorporated. An integrated system includes a co-molded lens cone and attachment ring, with a lens window at the bottom of the lens cone which provides a sealed volume for vacuum-attaching a laser delivery system above the lens cone.

Abstract: A device includes a body configured to be placed on an eye and multiple tine assemblies configured to secure the body to and release the body from the eye. The body includes multiple corners and multiple sides. Each corner includes a passage through the corner. Each side connects an adjacent pair of corners. Each tine assembly includes a twist pick configured to be inserted through one of the passages. Bottom surfaces of the sides are raised relative to bottom surfaces of the corners such that the bottom surfaces of the sides are spaced apart from the eye when the bottom surfaces of the corners are resting on the eye. Each of at least one side includes multiple openings configured to allow manipulation of a position of the body and a groove configured to receive a projection from a surgical tool in order to position the surgical tool on the eye.

Abstract: A wide range within a subject eye is observed while a burden on a subject of whom the subject eye is part is moderated. In an optical system that deals with light reflected from the fundus of the subject eye, a first optical system that pertains to a field of view of a fundus central portion centered on an optical axis is used as a standard optical system. The optical system can be switched by a replacement mechanism from the first optical system to a second optical system that pertains to a field of view of a fundus surroundings portion surrounding the fundus central portion.

Abstract: Both observation of a wide range within a subject eye may be enabled and a burden on a subject of whom the subject eye is part may be moderated. In order of incidence of light from a side at which a pupil of the subject eye is disposed, spreading of the luminous flux is suppressed by a first refracting face, the light is reflected by a first reflection surface with a central aperture, directing the luminous flux in convergent directions in a direction toward the subject eye, the light is reflected in the direction opposite to the direction toward the subject eye by a second reflection surface, and the light is transmitted through the central aperture of the first reflection surface and forms a pupil conjugate image that is conjugate with a position of the pupil of the subject eye.

Abstract: A rigid corneal contact lens comprises a front-surface optical zone and a back-surface optical zone: the front-surface optical zone comprises a front-surface central zone (1) and a defocusing zone (2) at the periphery of the front-surface central zone (1); the front-surface central zone (1) is spherical; the defocusing zone (2) has a radius of curvature decreasing from the outside of the front-surface central zone (1) continuously and a minimum radius of curvature which ranges from 95% to 50% of the radius of curvature of the front-surface central zone (1). Because of the structure of a human eye, the phenomenon of peripheral hyperopic defocus exist in human eyes, that is, central image points for an image are projected on macula foveal of retina and peripheral image points are projected behind retina. As shown in experimental evidences, peripheral hyperopic defocus is the main cause of myopia development which can be moderated by restraining peripheral hyperopic defocus.

Abstract: A contact lens, system of contact lenses, and a method for detecting eye convergence includes detecting a first inward gaze with first gaze detection circuitry included in a first contact lens disposed on a first eye. A first inward gaze signal is transmitted from the first contact lens to a second contact lens disposed in a second eye in response to detecting the first inward gaze. A second inward gaze is detected with second gaze detection circuitry included in a second contact lens disposed on the second eye. The first inward gaze signal is received by the second contact lens. If the first inward gaze signal is received within a pre-determined time period from detecting the second inward gaze, an optical power for the second eye is adjusted.

Abstract: In certain embodiments, a patient interface apparatus for ophthalmic surgery comprises an annular member and an evacuation conduit. The annular member has an outer side, an inner side, a distal side, and a proximal side. The inner side defines an opening that allows for a laser beam to reach a treatment region of an eye free from reflection or refraction. The proximal side has a contact surface shaped to affix to a surface of the eye, and a groove that defines a suction chamber with the surface of the eye. The evacuation conduit is capable of fluid communication with the suction chamber, and conducts fluid away from the suction chamber to affix the contact surface to the surface of the eye.

Abstract: Devices and method for determining a pupil size of a subject having closed eyelids.

Abstract: An ocular cranial nerve monitoring system (OCNMS) that provides continuous measurement of pupillary reactivity in the eye. The system features a sensor component that produces a stimulating light and a recording light and records reflected recording light so as to calculate pupillary diameter and response to stimulation as measured by latency, velocity, and/or amplitude. This system of the present invention may be used for indirect assessment of the 2nd and 3rd cranial nerve (CN 2, CN3) pathways and/or intracranial pressure in patients and may be used intraoperatively. The data obtained from this system may allow for immediate corrective actions, which may help prevent permanent deficits and improve patient safety and surgical outcomes. In some instances, the system may help avoid unnecessary or invasive procedures (e.g., catheters inserted for intracranial pressure monitoring).

Abstract: A system and method for performing ophthalmic surgery using an ultra-short pulsed laser is provided. The system includes a laser engine configured to provide an ultra-short pulsed laser beam, optics configured to direct the laser beam to an undocked eye of a patient, an eye tracker configured to measure five degrees of freedom of movement of the undocked eye, an optical coherence tomography module configured to measure depth of the undocked eye, and a controller configured to control laser beam position on the undocked eye toward a desired laser pattern based on depth and the five degrees of freedom of movement of the undocked eye. Adaptive optics are also provided. Also disclosed are a scleral ring including fiducial markings and a compliant contact lens and fluid tillable contact lens configured to facilitate ultra-short pulsed laser surgery while reducing or eliminating eye docking requirements.

Abstract: A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and/or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

Abstract: A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and/or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

Abstract: An optical imaging device includes a support structure and imaging channels, where each imaging channel includes a discrete optical imaging pathway. The imaging channels may be disposed within the support structure, and the imaging channels may be aimed at different angles relative to each other such that each optical imaging pathway is directed towards a pupil of the eye. Additionally, the optical imaging device may include a primary fixation target configured to emit optical signals along a primary fixation target projection path towards the pupil of the eye. Further, an artifact of the primary fixation target may be generated onto a portion of the eye to be imaged.

Abstract: An orthokeratology lens designating system 10 includes a selecting device 20, a database server 30, a lens designating server 50 and a terminal device 70. The selecting device 20 includes a device 22 for acquiring movement data of an orthokeratology lens moving on a cornea with the orthokeratology lens mounted on the cornea, and an assessing device 28 for assessing, on the basis of the lens movement data, that the orthokeratology lens is a registered lens that can be used for a patient. Registered lens correction D data of the registered lens, registered patient data including registered cornea D data of a cornea, and registration stage data that indicates in which stage of a plurality of correction stages, the lens is to be mounted on the cornea, are output to the database server 30. The database server 30 is configured to accept and store these pieces of data to build a database.

Abstract: Because vision loss in most forms of glaucoma is related to elevated IOP, most glaucoma treatment protocols are concerned with lowering IOP by increasing aqueous humor outflow. The invention utilizes electromagnetic radiation to create retraction in the iris tissue, thereby (a) reducing convexity and enlarging the drainage angle and thus the area of the anterior chamber, (b) reducing contact between the zonule fibers and the iris pigment epithelium, (c) applying greater tension to both the TM and uveoscleral outflow pathways, thereby enlarging those pathways and increasing outflow.

Abstract: In one embodiment, a double-reflecting contact lens and carrier assembly for viewing the anterior chamber and the anterior chamber angle of an eye, the eye having an optical axis, includes a lens including a lens body having a contact end defining at least a portion of a first surface configured for contacting an eye and a viewing end defining at least a portion of a second surface, a first reflecting surface disposed adjacent the lens body at an angle relative to the optical axis of the eye, and a second reflecting surface disposed adjacent the lens body opposing the first reflecting surface at an angle relative to the first reflecting surface, and a carrier configured for carrying the lens in a manner that provides rotation of the lens relative to the eye of a patient.

Abstract: An ophthalmic device for fundus examination comprising at least one light-permeable end, designed to come in contact with the eye and provided with a light source that allows illumination of the eye fundus cavity through the eyeball without the need of an external light source that may cause reflections or artifacts displayed on lenses or magnifying glasses used by professionals during the examination.

Abstract: In one embodiment, a double-reflecting contact lens for viewing the anterior chamber and the anterior chamber angle of an eye, the eye having an optical axis, includes a lens body having a contact end defining at least a portion of a first surface for contacting an eye and a viewing end defining at least a portion of a second surface, a first reflecting surface disposed adjacent the lens body, wherein the first reflecting surface is a planar surface extending from the viewing end to a middle region in the body between the viewing end and the contact end, and a second reflecting surface disposed adjacent the lens body, wherein the second reflecting surface is a planar surface extending from the viewing end to the contact end, the second reflecting surface opposing the first reflecting surface at an angle relative to the first reflecting surface.

Abstract: A method of blink detection in a laser eye surgical system includes providing a topography measurement structure having a geometric marker. The method includes bringing the topography measurement structure into a position proximal to an eye such that light traveling from the geometric marker is capable of reflecting off a refractive structure of the eye of the patient, and also detecting the light reflected from the structure of the eye for a predetermined time period while the topography measurement structure is at the proximal position. The method further includes converting the light reflected from the surface of the eye into image data and analyzing the image data to determine whether light reflected from the geometric marker is present is in the reflected light, wherein if the geometric marker is determined not to be present, the patient is identified as having blinked during the predetermined time.

Abstract: Gonioscope devices are disclosed herein that are configured to enable a medical professional to view structure inside the eye that is ordinarily hidden from normal view. The gonioscope can be an integrally molded single piece that includes both a handle and a gonioscopic optical element. The proximal surface can have a viewing area and a light diffusing area. A recess can provide access to a wound site on the eye while the gonioscope is used for viewing. The handle can be configured to encourage proper alignment of the gonioscope with the eye. The gonioscope can provide an optical fixation point for the subject to focus on to facilitate proper alignment of the eye. The gonioscope can have one or more retention elements configured to engage the tissue of the eye around the contact surface to stabilize the gonioscope. The gonioscope can couple to a lid speculum.

Abstract: An eye-mounted display includes a femtoprojector, which includes a backplane and a frontplane. The backplane receives data (e.g., data packets) that specify the image to be projected by the eye-mounted display. It converts this data to drive signals (e.g., current) to drive the frontplane. The frontplane contains an array of light emitters (e.g., LEDs) that produce light according to the drive signals, thus generating the desired image. In one approach, the image is deconstructed and transmitted to the backplane as needed as microframes which are displayed asynchronously and only for regions where the image has changed, rather than continuously scanning full picture frames at the full frame rate. In another aspect, the femtoprojector has variable pitch between adjacent light emitters.

Abstract: A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and/or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

Abstract: The invention is a method of automatically adjusting a retinal electrode array to the neural characteristics of an individual patient. By recording electrically evoked electroretinograms (eERG) to a predetermined input stimulus, one can alter that input stimulus to the needs of an individual patient. A minimum input stimulus is applied to a patient, followed by recording the eERG response to the input stimulus. By gradually increasing stimulus levels, one can determine the minimum input that creates a neural response, thereby identifying the threshold stimulation level. One can further determine a maximum level by increasing stimulus until a predetermined maximum neural response is obtained. However, eERG signals include a significant amount of noise. Applicants have developed novel techniques for artifact reduction and noise filtering to provide an accurate measure of neural activity.

Abstract: An eye viewing device includes an imaging assembly having at least two optical components disposed along an optical axis of the device. An adapter is attachable to the device and is aligned along the imaging axis of the device, the adapter having at least one adaptive optical element configured for projecting an image of the ear along the imaging axis for viewing without modification to the device and enabling separate examination modes.

Abstract: Devices and methods for multiplexed imaging are provided. In one embodiment, an imaging device can simultaneously direct light of a same spectrum from each of a plurality of image channels onto an image sensor to create a multiplexed image on the sensor. Each image channel can collect light from different portions of an extended field of view or from the same portion with different perspectives. The device can also include one or more encoders to encode light from the channels prior to detection. The devices and methods described herein can also include disambiguating a captured multiplexed image to create images for each of the plurality of image channels. Disambiguated images can cover the extended field of view at a high spatial resolution despite using only a single small format image sensor, or can produce stereo or 3D images having the full resolution of the sensor.

Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.

Abstract: Accommodating intraocular lenses containing a flowable media and their methods of accommodation.

Abstract: According to the present invention, there is provided a contact lens assembly comprising a contact lens having an outer edge, a flash ring disposed around the outer edge of the contact lens and a connecting portion connecting the flash ring to the contact lens, wherein the thickness of the connecting portion is less than the thickness of the outer edge of the contact lens. There is also provided a contact lens assembly comprising a contact lens having an outer edge, a flash ring disposed around the outer edge of the contact lens, and a connecting portion connecting the flash ring to the contact lens wherein the mass of the flash ring is at least forty times greater than the mass of the contact lens, suitably at least sixty times greater than the mass of the contact lens.

Abstract: A contact-type ophthalmoscope includes a contact lens, an annular illumination module, an imaging lens group and an image capture module. The contact lens having a concave surface is configured for contacting an eyeball. The annular illumination module arranged close to the contact lens is configured for providing a direct illumination light source to illuminate a fundus of the eyeball. The imaging lens group is disposed in the central hollow portion of the annular illumination module and configured for converging the reflected light from the fundus of the eyeball. The image capture module is configured for capturing the reflected light converged by the imaging lens group to form an image. The above-mentioned contact-type ophthalmoscope has advantages of better illumination efficiency, compactness and less scattered light reflected from the imaging lens.

Abstract: The present invention relates to an illuminated lens apparatus (10) placed on the eye wall and comprising a hollow base (11), a fixed lens (13) placed inside said hollow section and a handle (14) connected to the base (11). Said illuminated lens apparatus (10) is characterized in comprising a ring (12) provided in such a manner to enclose the base (11) upper surface and at least one bushing (20) configured on said ring (12) in such a manner to enable positioning of illumination probe (30) therein.

Abstract: An attachment for a contact lens that comprises a first part provided to be held in position against an eye and a second part connected to the first part. The second part is for fixing the attachment to a contact lens. The first part corresponds to a distal side of a contact lens and forms at least one of a sterile or a disinfected bearing surface for the eye. The second part is configured to connect the attachment to the contact lens and to bring the first part to rest against a distal side of the contact lens.

Abstract: Devices and methods for wavefront sensing and keratometry are described. A device includes a lens assembly, a wavefront sensor, and a keratometer. The wavefront sensor includes: the lens assembly; a first light source configured to emit first light and transfer the first light emitted from the first light source toward an eye through the lens assembly; an array of lenses that is distinct from the lens assembly; and a first image sensor configured to receive light, from the eye, transmitted through the lens assembly and the array of lenses. The keratomer includes: the lens assembly; a second light source that is distinct from the first light source and configured to emit second light and transfer the second light emitted from the second light source toward the eye; and a second image sensor configured to receive light, from the eye, transmitted through the lens assembly.

Abstract: This invention describes Ophthalmic Devices with media inserts that have photonic elements upon or within them. In some embodiments passive ophthalmic devices of various kinds may be formed. Methods and devices for active ophthalmic devices based on photonic based projection systems may also be formed.

Abstract: Accommodating intraocular lenses containing a flowable media and their methods of accommodation.

Abstract: System and method directed towards providing full and even illumination of a patient's retina through lighting integrated into a handheld fundus lens. By integrating the lighting, the method and system reduces and even eliminate many lens artifacts and reflections. By increasing the accuracy, quality, and field of view afforded during clinical examination of the retina, the method and system will allow practitioners to make more accurate diagnoses and will increase safety during retinal surgical procedures.

Abstract: A composite lens comprises an anterior rigid gas permeable layer, and an annulus of soft material bonded to a posterior surface of the anterior rigid gas permeable layer, wherein a central zone of the composite lens is rigid and without a soft layer, wherein a peripheral zone of the composite lens is generally rigid in its anterior aspect and soft in its posterior aspect.

Abstract: This disclosure relates generally to methods and devices for use in viewing and positioning an eye with a gonio lens system, such as during ocular exams and ocular surgeries. Some embodiments of the gonio lens system can include a gonio lens for viewing one or more tissues and structures of the eye. In addition, the gonio lens system can include one or more positioning features for controlling movement positioning of the eye.

Abstract: The optical design for a contact type portable eye imaging apparatus, including the imaging optics and illumination optics are proposed, which utilizes miniature image sensor and solid state light emitting technology, as the next generation of medical imaging devices, in particular in ophthalmic imaging applications.

Abstract: A method for designing and manufacturing a monofocal ophthalmic lens and corresponding lens. A surface of the monofocal ophthalmic lens is defined by: f(x,y)=a1+a2?{square root over (1?a3x2?a4y2)}+a5exp{a6x4+a7y4+a8x2y2} wherein x and y are perpendicular optical axes of the lens in a plane, wherein a1-a8 are coefficients, and wherein a5 is other than 0 and at least one of a6, a7 and a8 is other than 0, including a hyperbolic component and an exponential component. The coefficients can be calculated by an iterative calculation and the merit function as follows: fm = [ ? i ? ? i ? m i 2 ? ( ? ) ] 1 / 2 where mi is a value of an optical property at a specific viewing angle ? with respect to an optical axis of the lens, and ?i is a weighting value.

Abstract: The present disclosure provides devices and methods for the modulation of retinal stimulation and/or retinal signal processing. Such methods may be useful for the diagnosis, treatment or prevention of a disease or disorder. The disclosed methods may comprise visual intervention by using lenses, prisms, mirrors, and/or filters (e.g., occluders) to alter the amount and/or direction of light on to the retina.

Abstract: An eye imaging apparatus can include a housing, an optical imaging system in the housing, and a light source in the housing to illuminate an eye. The optical imaging system can include an optical window at a front end of the housing with a concave front surface for receiving the eye as well as an imaging lens disposed rearward the optical window. The apparatus can comprise a light conditioning element configured to receive light from the light source and direct said light to the eye. The apparatus can further include an image sensor in the housing disposed to receive an image of the eye from the optical imaging system. In various embodiments, light conditioning element includes at least one multi-segment surface. In some embodiments, the housing is provided with at least one hermitic seal, for example, with the optical window. In some embodiments, time sequential illumination is employed.

Abstract: Apparatus, systems and methods employing contact lens sensors are provided. In some aspects, a contact lens includes a substrate and a circuit. The circuit can include: one or more sensors disposed on or within the substrate, that sense a feature associated with a wearer of the contact lens; and a compensation circuit disposed on or within the substrate, coupled to the sensor(s) and that outputs information to adjust an output of the sensor(s). The compensation circuit can include: a temperature component that senses the temperature of the sensor(s); and a communication component that outputs information indicative of the temperature of the sensor(s), and receives information associated with adjusting the output of the sensor(s). In other aspects, a contact lens includes a circuit that senses the body temperature, or ambient temperature outside of the body, of the contact lens wearer. Sensor fusion and/or calibration can be performed based on the information.