Abstract: An intraocular lens with a medial light-focusing lens body includes oppositely disposed position fixation members having seating portions that are respectively resiliently retained between vascular and non-vascular portions of the eye. The position fixation members are formed of different materials for beneficial cooperation with the respective portions of the eye.

Abstract: A housing for an intraocular lens having opposed walls and having a lens in at least one of these walls which is the same in magnitude and opposite in sign to the optical power of the lens intended to be housed therein. The housing bears indicia of the optical magnitude and sign of the lens intended to be housed therein. A surgeon can ascertain whether the intended lens is in the housing by viewing an object through the housing walls and through the lens housed therein. There will be substantially no optical distortion if the intended lens is in the housing.

Abstract: A hand-held surgical instrument for fragmentation and removal of animal tissue such as a cataract has a working tip which in addition to being longitudinally vibrated is laterally oscillated to enhance the operation thereof. Also, the method of laterally oscillating the working tip in the range of about 5 degrees to about 60 degrees, longitudinally vibrating the tip ultrasonically, supplying treatment fluid to the region adjacent to the working tip and withdrawing the suspended particles of the cataract in the fluid.

Abstract: A posterior chamber intraocular lens having at least two projections on the rear surface thereof for causing a line of tension in the posterior capsule. If desired, after implantation of the lens the posterior capsule may be perforated with a laser beam transversely to the line of tension, causing the posterior capsule to tear and form an opening to eliminate any cloudiness of the posterior capsule from behind the central region of the lens.

Abstract: An intraocular posterior chamber lens which has two resilient support portions with protruding contact points for seating the lens in the lower groove portion formed by the anterior and posterior capsules of the eye. The lens also includes an upwardly extending stabilizing portion adapted to be positioned posteriorly of the iris of the eye without being seated in the upper groove portion of the eye. The stabilizing portion provides vertical stabilization of the lens in the eye. The lens can be easily implanted in the posterior chamber of the eye and can be easily removed by a surgeon at a later date, if necessary, without substantial damage to the eye.

Abstract: Medical breathing apparatus which provides repeated short bursts of oxygen separated by longer intervals of time to the wearer of a surgical mask to supplement his breathing.

Abstract: Apparatus for and method of irrigating and aspirating an eye utilizing valves in a conduit and conduit branches to control the flow of fluid into and out of the eye under the force of gravity.

Abstract: An intraocular lens and method of positioning the same in an eye in which the lens includes a layer of material which is soluble in the eye for stiffening the position-fixation members of the lens during insertion thereof into the eye.

Abstract: An intraocular lens and method of positioning the same in a human eye in which the lens has, for example, two body portions which are separable outside the eye and two position-fixation members extending therefrom. The individual lens body portions and position-fixation members can be snaked into the eye through a smaller opening in the eye than the diameter of the lens body and the individual lens portions are connected together inside the eye by the surgeon to form the lens which is then positioned and seated in the eye by the surgeon.

Abstract: An intraocular lens structure utilizing a lens which may be placed adjacent the posterior side of the iris and adapted for covering at least a portion of the pupil. The structure includes a first position fixation element connected to the lens body which extends away from the same to the periphery of the iris for engagement in the posterior chamber. A second position fixation element connected to the lens body includes a first portion which extends away from the lens body, a second portion intended for passing through an opening in the iris wall into the anterior chamber and an end portion which extends to the periphery of the iris in the anterior chamber and engages the same. The end portions of the first and second position fixation elements are sprung between the anterior chamber angle on the one hand and the capsular sulcus on the other hand.

Abstract: An apparatus and method for measuring the anterior chamber diameter of the eye is disclosed in which a device illuminates the opposite end points of the annular groove. A gauging device cooperates with the illuminating device so as to provide to the viewer through a goneal assembly, a recognizable signal corresponding to a measure of the distance between the end points for gauging the distance.

Abstract: An intraocular lens for use as an artificial lens implant anteriorly of the iris which has at least a pair of position fixation elements providing a multi-point support for the lens. The position fixation elements are constructed and arranged for sufficient flexibility to permit a single lens to have the capability of being used as an implant in eyes with anterior chamber diameters of a substantial variety in sizes, thereby minimizing the inventory of lenses necessary to be maintained in operating rooms.

Abstract: A new intraocular lens, suitable for use in artificial lens implantations and having a light-focusing lens body and two position fixation means therefor, is disclosed. One position fixation means extends generally radially from a first region of the periphery of the lens body and the other position fixation means comprising a pair of support members extends generally radially from a second region of the periphery of the lens body spaced from the first region. At least one of the support members of said latter position fixation means is resiliently deformable between a normal undeformed condition, in which the entire lens will not pass through an incision in the eye of a given length and a deformed condition, in which the entire lens will pass through such given incision. During insertion of the lens into the eye, sufficient force is applied to the deformable position fixation means to maintain it in the deformed condition thereof.

Abstract: An intraocular lens structure utilizing a lens which may be placed against the posterior side of the iris and adapted for covering at least a portion of the pupil. The structure includes a first position fixation element connected to the lens which extends away from the same to the periphery of the iris for engagement in the posterior chamber. A second position fixation element connected to the lens includes a first portion which extends away from the lens intended for passing through the pupil into the anterior chamber and an end portion which extends to the periphery of the iris in the anterior chamber and engages the same. The end portions of the first and second position fixation elements are sprung between the anterior chamber angle superiorly at the scleral spur and the capsular or ciliary sulcus inferiorly.

Abstract: An intraocular lens for use as an artificial lens implant anteriorly of the iris which has a pair of position fixation elements providing a three-point support for the lens. One of the position fixation elements has a portion swivelable about a base portion attached to the lens body so that the position fixation element may be adjusted to provide a three-point support corresponding to measured dimensions of the eye and may be attached in the selected position by sutures before implantation in the eye.

Abstract: A multi-piece intraocular lens includes a medial light-focusing lens body and a plurality of position fixation members for holding the lens body in proper position in the eye. At least one of the position fixation members is separate from and attachable to the lens body. The separate position fixation member is assembled to the lens body after both it and the lens body have been separately inserted into the eye.

Abstract: An intraocular lens with a medial light-focusing lens body includes oppositely disposed position fixation means with respective seating portions that are resiliently retained in the eye without sutures. One of the position fixation means is adapted to be seated forwardly of the other position fixation means with respect to the optical axis of the eye. After the intraocular lens has been inserted in the eye the seating portion of the forwardly disposed position fixation means has a greater radial extent from the optical axis of the eye than the seating portion of the rearwardly disposed position fixation member.

Abstract: Intraocular lenses with four point position fixation in the eyeball have positioning elements that provide lens stability with respect to the pupil while being substantially deflectable in response to normal distortions of the eyeball to minimize eye irritation and other eyeball distortion related trauma.

Abstract: A new intraocular lens construction, suitable for use in artifical lens implantations and having a medial light-focusing lens body and two lateral position fixation elements therefor, is disclosed. One of the position fixation elements has a first portion extending generally laterally from a first region of the periphery of the lens body, and a second portion extending from the first portion generally transversely thereto and at least partly peripherally of the lens body. The other position fixation element extends generally laterally from a second region of the periphery of the lens body spaced from the first region. By virtue of the special construction of the first position fixation element, the lens can be introduced into the eye by being in effect snaked through the corneo-scleral incision.