Abstract: A trephine can separate a cornea into at least two portions by applanating and cutting a boundary around an area of the cornea. The trephine comprises a flat ring for applanating the cornea and a blade for cutting the applanated cornea. The blade extends radially inward and is rotatable around the ring. Such a trephine can cut substantially parallel to the flattened lamella and causes lamellar separation at the cut depth. A flap of cornea may be separated from the remaining corneal tissue along the lamella by teasing the portions apart, or by injecting fluid between the lamellae. An exposed surface of the separated cornea may then be ablated with a laser and the flap reattached to the remaining corneal tissue.

Abstract: A microkeratome for improved corneal flap production for corneal surgery. The microkeratome, having a first aperture and a cutting blade, includes a second aperture located just below the plane of the cutting blade and through which a corneal plug protrudes in preparation for the lamellar cut of the microkeratome to create a uniformly thick lamellar flap of predetermined diameter and depth. The second aperture can include a second cutting blade. The microkeratome also includes a transparent applanation plate positioned at a predetermined distance above the plane of the cutting blade and an adjustable stop to prevent complete transection of the corneal flap.

Abstract: A multi-function surgical instrument for facilitating ophthalmic surgery of the eye by laser means. Included are a lower ring and an upper ring. One or two intermediate rings may also be included. The lower ring includes a central aperture to capture the limbus and aid in positioning of the eye. Protuberances on the lower surface of said ring, application of vacuum between the lower surface of the ring and the eye, or both may be used to more firmly grip the eye. Ports disposed on the upper surface of the lower ring and connected to a vacuum source may be used to control hydration of the surgical field. Attached to and extending above the upper surface of the lower ring is a sterile platform for reposing temporarily removed tissues during the administration of laser pulses to other tissues. The upper ring is disposed above the surgical bed.

Abstract: A knife having a handle into which a knife blade may be inserted. The blade end of the handle is of reduced diameter and contains a pair of spring-like cantilevered locking arms. The locking arms terminate in a clasping mechanism that interact with a latch contained within a bore in a sheath. The bore is sized and shaped to reciprocate linearly over the blade end of the handle so as to alternatively cover the blade for storage or expose the blade for use.

Abstract: A blade holder is provided for receiving and holding a keratome blade. The keratome blade used with the blade holder is of material so as to be attracted to a magnetic field. The blade holder includes a handle portion configured to be grasped by a user. A head portion is coupled to the handle portion and has a receiving surface sized to receive at least a portion of the keratome blade. The head portion is constructed and arranged to facilitate application of a magnetic field to attract the keratome blade such that the keratome blade can be carried by the receiving surface of the head portion. Hence, the blade can be inspected and loaded into a keratome having only been contacted by the sterile blade holder.

Abstract: This invention is an improved method and kit for producing a desired channel or pathway in the interlamellar space in the corneal stroma for inserting a biocompatible material. The biocompatible polymer may be an intrastromal corneal ring (ICR). The method involves the use of clockwise and counter-clockwise dissectors, and optionally channel connectors and finish channel connectors. The kit contains clockwise and counter-clockwise dissectors and optionally channel connectors, finish channel connectors and probes.

Abstract: A corneal surgical apparatus includes: a suction ring to be fixed to a patient's eye, the suction ring having an opening; a suction unit which absorbs air in a space defined between the patient's eye and the suction ring, and which variably sets a suction pressure; a setting unit which sets a desired ocular pressure for the patient eye during surgery, the desired ocular pressure having a predetermined tolerable range; an input unit which inputs a measured ocular pressure of the patient's eye; a controller which controls operation of the suction unit based on the inputted ocular pressure to obtain the set ocular pressure, and which is connected to the suction unit, the setting unit and the input unit.

Abstract: A method to provide an efficient, safe, and easy to use supracapsular method for removal of cataracts, wherein a groove is formed in the cataract nucleus, the nucleus is cracked along the groove into two halves and rotated approximately 90 degrees, force is applied to the proximal half to effect movement of the distal half into a stacked position relative to the proximal half, and the nucleus halves along with the remainder of the cataract are then emulsified and removed.

Abstract: The blade has a forward pointed end with two forward cutting edges which flare outward and rearward to intermediate cutting edges that are parallel to the centerline which in turn extend rearward to two rear cutting edges which flare outward and rearward to two non-cutting edges. The angle of each the forward cutting edges relative to the centerline is smaller than the angle of each of the rear cutting edges relative to the centerline.

Abstract: The present invention relates to a medical scalpel for incising a spherical biological tissue comprising a shank and a planar blade portion integrated with the shank. The planar blade portion has a first face and a second face opposed in parallel as a whole with each other. The planar blade portion has a pointed end to thereby show a reverse-V profile and has, on both sides of such pointed end, an edge in parallel as a whole with the first face and the second face, the blade portion being formed so as to have a ratio of the partial thickness thereof on one side of a virtual flat plane surrounded by said edge to the total thickness thereof within a range of from 75 to 93%.

Abstract: A microkeratome cutting head assembly 10. A cutting blade 14 of the assembly 10 has a nominal length and presents a forward cutting edge 22. An applanation member 12 for applanating a cornea of an eye includes a trailing portion 18 having a curved section presenting an apex 20. The forward cutting edge 22 of the cutting blade 14 of the nominal length is positioned relative to the apex 20 so that together the forward cutting edge 22 and the apex 20 define a desired thickness of a flap 50 to be created from the cornea 48 such that the flap 50 is essentially not compressed.

Abstract: A suction ring providing an inferior engaging surface and a superior engaging surface that engages and grips the ocular globe, immobilizing the ocular globe relative to a corneal surgical procedure. The inferior engaging surface grips the sclera of the ocular globe while the superior engaging surface grips the corneal region. The suction ring also provides an aperture sized to receive and expose the cornea for a surgical procedure.

Abstract: A surgical instrument that creates a circular cut 42 of almost any diameter in the lens capsule 50 of the eye, yet its entire diameter is less than 1 mm when inserted into the eye. A cutting edge 14 is affixed to the distal tip of a super-elastic rod 11 with its distal end formed into a circular loop. The circular loop is first retracted inside of an outer tube member 12, and then the tube 12 is inserted into the eye. The loop is then expelled from the tube 12, allowing the loop to reform inside of the eye. As the loop is retracted back into the tube 12, the cutting edge 14 follows the circular path of the loop, cutting a circular opening (a capsulorrhexis) 42, into the lens capsule 50.

Abstract: A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form includes: a blade; a rotating shaft; a bearing rotatably supporting the rotating shaft; a transmitting mechanism which converts rotation of the rotating shaft about a rotation center axis into oscillation in a direction perpendicular to the rotation center axis and transmits the oscillation to the blade; and a preventing mechanism which prevents moisture component from penetrating or infiltrating into a clearance between the rotating shaft and the bearing by controlling the rotation of the rotating shaft.

Abstract: A surgical blade for use in ophthalmic surgery has a multi-faceted distal end with cutting edges which meet at an angle greater than 90° and preferably 140°, resulting in a blade with a relatively large surface area. An anterior shoulder is positioned intermediate the distal and proximal ends of the blade to direct the blade to dimple down when the blade has been inserted into the cornea a sufficient distance to bring the shoulder into contact with the corneal tissue, allowing the surgeon to make a linear entry into the anterior chamber resulting in a reproducible, leak-free incision by using a straight-in hand motion. The blade is rounded at certain of its lateral edges to avoid snagging the incision when the blade is passed through the cornea.

Abstract: The present invention provides a microfistula tube including a soluble duct, defining a drainage canal having an inner surface, the duct being biocompatible, wherein the microfistula tube is coated with and/or incorporates biological for forming a basement membrane, or an intracellular matrix and a basement membrane. The biological cells may coat the inner surface of the drainage canal, and the microfistula tube may be made of a mouldable material or an absorbable material. The invention also provides an implantation system for the microfistula tube including a microfistula tube and a surgical instrument including an outer tube for penetrating body tissue, an inner tube, and an innermost rod, wherein the outer tube, the inner tube and the innermost rod are coaxial, the outer tube is adapted to receive said microfistula tube, whereby the inner tube may be used to push the microfistula tube into position and the innermost rod provides mechanical support during implantation of the microfistula tube.

Abstract: A blade and a blade assembly wherein the blade has a front, beveled, sharpened edge, two side edges meeting at a point spaced from the front edge and at least one attachment structure extending outwardly from each side edge. A blade holder, which extends beyond the side edges and attachment structures of the blade, sits on a top surface of the blade and is attached to the blade by a portion thereof which receives the attachment structures. The holder has an opening in an exposed surface to receive an extension from a drive mechanism such that when the drive mechanism is activated the blade is caused to vibrate or oscillate. The blade is oscillated in a lateral fashion when driven by a rod rotating along a circular path.

Abstract: A microkeratome for keratomileusis ophthalmic surgery having a base, a carriage mounted to the base and a cutting blade carried in the carriage. The carriage is guided for movement in an axial cutting direction and the cutting blade is movable in an oscillating motion transverse to the cutting direction. In addition, the carriage is movable in the cutting direction without imparting the oscillating motion to the cutting blade.

Abstract: A device for surgery of the cornea includes an annular base for fixing the device to the eye of a patient and a cutter head including a body and a blade assemble. The blade assembly includes a blade and a blade carrier with a resilient tongue integral with the blade carrier. The resilient tongue has a stud located at one end. The cutter head is a one piece body with provisions to connect it to a drive. An orifice is formed in the body for accepting the blade assembly.

Abstract: A corneal punch comprising a base unit having a first annular mating surface surrounding a well in which a donor cornea may be located, and a separate guide unit including an inner annular guide shaft and an outer locating ring connected to the guide shaft and having a second annular mating surface. The base unit and the guide unit may be releasably positioned in registration with each other by way of the first and second mating surfaces such that the guide shaft is substantially coaxial with the well.

Abstract: A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form, includes; a rotating shaft; and a bearing rotatably supporting the rotating shaft. At least one of a surface of the rotating shaft and an inner wall surface of the bearing has been subjected to a coating treatment or a surface modification treatment.

Abstract: A medical device that can be used to cut a cornea. The device may include a blade that is coupled to a head by a blade holder. The device may also have a retention spring that exerts a force on the blade and blade holder. The head and blade can be moved across a ring by a drive assembly that contains a lead screw. The ring may contain one or more openings which have a length that is greater than a width. The openings may be coupled to a vacuum source by a tube. The vacuum pressure of the tube can be displayed by a console. The console may also have switches that allow different operating parameters to be entered through a single knob.

Abstract: A method of tracking an eye during vision correction treatment includes cutting corneal tissue to define a cut edge. At least a portion of the cut edge is tracked to track eye movements. In one embodiment, the corneal tissue is cut to define a flap-like layer such that fluid gathers near the cut edge. The fluid is illuminated prior to tracking the cut edge.

Abstract: A surgical device for cutting substantially across a cornea of an eye of a patient, the device including a positioning ring structured to be temporarily attached to a portion of the eye surrounding the cornea to be cut, and defining an aperture sized to receive and expose the cornea to be cut. The surgical device further includes a cutting head assembly structured to be guided and driven over an upper surface of the positioning ring in a generally arcuate path, and having a cutting element positioned therein and structured to oscillate laterally to facilitate smooth and effective cutting of the cornea. The cutting head assembly is structured to be detachably coupled to the positioning ring by a coupling member which permits movement of the cutting head assembly relative to the positioning ring along the generally arcuate path, but maintains sufficient engagement therebetween to ensure that smooth, steady, driven movement is maintained.

Abstract: A keratome includes a head assembly having a cutting head and blade for cutting corneal tissue and an applanation member associated with the cutting head. The keratome includes an eyeball retaining structure and at least one sensor is associated with the keratome providing measurement of a respective at least one operative factor during cutting of the corneal tissue.

Abstract: A method of transplanting a graft in the subretinal area of a host eye comprises preparing the graft by harvesting from the donor tissue a population of cells in a manner that maintains the population of cells in the same organization and cellular polarity as is present in normal tissue of that type. The population of cells are of a sheet-like form and are assembled with a relatively thin flexible pliable carrier composed of a non-toxic flexible composition which substantially dissolves at body temperature to form a graft. The graft is sufficiently flexible and pliable to be coiled to form a volute without disturbing the organization and polarity of the cells. The method further comprises coiling the graft to form a volute with the convolutions of the volute free of one another for subsequent uncoiling of the graft substantially to its original sheet-like form. An incision is made in the host eye for insertion of the volute.

Abstract: A device is disclosed for separating the epithelial layer of a cornea from the eye. The device includes a separator having an edge to remove the epithelial layer as the separator moves across the eye. The edge includes a thickness thicker than the thickness of at least one epithelial cell and less thick than the thickness of the epithelial layer. Separation can be performed mechanically, without the use of chemicals, so that the shape and integrity of the separated epithelial layer is preserved. The device can also be used with a polymer film that adheres to the epithelial layer to help preserve an integrity of the epithelial layer.

Abstract: A surgical method for vision correction includes the step of first determining the type, size and shape of a corneal implant and a location within the stroma for placement of the corneal implant. Next, the dimensions of a stromal pocket suitable for accommodating the corneal implant are prescribed. To create the stromal pocket, a pulsed laser beam is focused to a point within the stromal tissue and then moved within the stromal tissue to photodisrupt the prescribed volume of stromal tissue. Once the stromal pocket is established, an entry channel extending from the anterior surface of the eye to the stromal pocket is created. The entry channel is sized to allow the prescribed corneal implant to pass through the entry channel and into the stromal pocket.

Abstract: A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form has a suction ring having an opening, which is vacuum-fixed to the patient's eye so that the cornea is projected from the opening. A cutting unit has a blade and an applanating member so that the cornea projected from the opening is incised by the blade while being applanated by the applanating member. A height changing mechanism is further provided, for changing a height of a tip of the blade in a visual axis direction of the patient's eye with respect to the suction ring.

Abstract: A retractable micro-surgical tool includes a shell, slidable insert, slide button, spring, and blade. The shell is preferably a hollow tube. A first slot is formed through the wall of the shell at substantially a first end thereof. A second slot is formed through the wall of the shell at substantially a middle of the shell length. A connecting slot is formed between the first and second slots to enable the slide button to be slid therebetween. The slidable insert includes a body, a first cantilever arm, and a second cantilever arm. The blade is preferably inserted into a first end of the body. An end of the blade may have different shapes suitable for performing micro-surgery. The first cantilever arm extends from substantially a middle of said body and the second cantilever arm extends from an end of the first cantilever arm. The slide button is attached to a top of the second cantilever arm at assembly. At least one side of the body has a groove formed therein to provide clearance for the spring.

Abstract: A blade and a blade assembly wherein the blade has a front, beveled, sharpened edge, two side edges meeting at a point spaced from the front edge and at least one attachment structure extending outwardly from each side edge. A blade holder, which extends beyond the side edges and attachment structures of the blade, sits on a top surface of the blade and is attached to the blade by a portion thereof which receives the attachment structures. The holder has an opening in an exposed surface to receive an extension from a drive mechanism such that when the drive mechanism is activated the blade is caused to vibrate of oscillate. The blade is oscillated in a lateral fashion when driven by a rod rotating along a circular path.

Abstract: A laser eye surgery system includes a laser for producing a laser beam capable of making refractive corrections, an optical system for shaping and conditioning the laser beam, a digital micromirror device (DMD) for reflecting the shaped and conditioned beam toward the eye, and a computer system for controlling the mirrors of the DMD. The computer system utilizes at least one polynomial equation to generate a smooth refraction correction profile.

Abstract: A corneal surgical apparatus includes: a suction ring to be fixed to a patient s eye, the suction ring having an opening; a suction unit which absorbs air in a space defined between the patient's eye and the suction ring, and which variably sets a suction pressure; a setting unit which sets a desired ocular pressure for the patient eye during surgery, the desired ocular pressure having a predetermined tolerable range; an input unit which inputs a measured ocular pressure of the patient's eye; a controller which controls operation of the suction unit based on the inputted ocular pressure to obtain the set ocular pressure, and which is connected to the suction unit, the setting unit and the input unit.

Abstract: The knife has a handle with a blade attached to one end of the handle. The blade has two opposite sides and two edges extending from the handle to a forward cutting edge portion. The two edges are blunt and are non-cutting edges. In one embodiment, the forward cutting edge portion is formed by a pointed inverted V shaped cutting edge extending forward of two outwardly extending straight cutting edges on opposite sides of the base of the pointed inverted V shaped cutting edge with the point of the pointed inverted V shaped cutting edge being located along the centerline of the blade. The outwardly extending cutting edges are transverse to the centerline. In another embodiment, the cutting edge portion is formed by a first edge portion transverse the centerline of the blade and an angled portion located next to one of the non-cutting edges. The angled portion forms an obtuse angle relative to the first edge portion and which extends forward of the first edge portion.

Abstract: A system for laser treatment of the eye comprises one or more diffractive optical elements for producing unique treatment segments within an ablation zone on the eye. The treatment segments may be annular, pie-shaped, or have other geometries or patterns selected to apply energy in a particular manner, usually in a non-overlapping manner so that energy dosages can be precisely controlled. In a first embodiment of the system, a single diffractive optical element is used and a beam expander expands or converges the beam to achieve the different treatment segments. In a second embodiment, a plurality of diffractive optical elements are used, each of which produces a single treatment segment.

Abstract: Methods and apparatus are disclosed for causing the optical center of the eye to align “HIGH point” of the anterior surface of the cornea. In accordance with one aspect of the invention relating to corneal ablation procedures, the HIGH point of the eye is used as the pole of a spherical surface which is fitted approximately to a portion of the anterior surface of the cornea within a “bounded region.” For corneal ablation procedures, the “bounded region” comprises a generally inverted-cup shaped region of the anterior surface of the eye bounded at its periphery by a plane which is substantially perpendicular to a local z-axis. During the operation local high points which project above the spherical surface are ablated. According to another aspect of the invention relating to radial keratotomy procedures, a pair of incisions in the plane of a “great circle” are formed in the cornea to weaken and flatten it.

Abstract: A device for surgery of the cornea comprising:

Abstract: A blade and holder combination for use with a microkeratome, and including means for improving mechanical stability when the blade is reciprocated during cutting, as well as a peripheral configuration minimizing local nonuniformities. Blades in accordance with the invention have a generally hemispherical posterior geometry that include an adjacent centralized ovoid coupling aperture and a small centrally disposed access slot that may include indicia for denoting blade type. The hemispherical geometry minimizes both local deformities and the processing needed to assure that the product functions to provide a clean, uniform surgical result.

Abstract: An apparatus and method for precisely forming a flap in the live cornea about at least a portion of the circumference of the live cornea, and then, if desired, forming incisions or tissue shrinkage in the live cornea under the flap without removing or ablating any tissue, and without damaging the Bowman's layer, to correct vision disorders in the eye such as astigmatism, myopia, hypertrophic, hyperopia and presbyopia, to name a few. The apparatus and method employ a stabilizing device and a cutting tool. The stabilizing device is adapted to be attached to the front surface of a live cornea to apply suction to the live cornea which prevents the live cornea from moving when the cutting is being performed.

Abstract: This suction ring is composed of a ring-shaped body (1) with an incarcerated, bevelled front opening (2), with an anterolateral cannula (4) for connection to a vacuum pump and a dovetail guide (7) on which the microkeratome cutting blade moves. The lateral wall of the body (1) has a tapered truncated conical configuration, diverging backwards for adaptation to the eyeball, in order to increase the suction capacity to the eye. The front area has a wider stepped perimeter (6), which together with a bulge (8) on the outer edge and corresponding to the tips of the guide (7), increases the effective length of the latter, allowing better fixation of the cutting blade.

Abstract: The present invention provides a microkeratome for creating lamellar sections from a biological tissue containing a blade-post assembly which improves precision and predictability by preventing undesired blade wobbling. Methods and devices are disclosed to inhibit blade wobbling, preferably frictional fittings are employed to secure the blade (or blade assembly) within the microkeratome. By biasing the blade into a secure position, wobbling during usage is substantially lessened if not eliminated. A modified blade assembly is disclosed having a post that is mated to a surgical blade. In one embodiment of the invention, the post can have one or more protrusions that engage at least one side of a recess in the microkeratome thereby creating a frictional fit sufficient to prevent movement of the blade while cutting. In another embodiment of the invention, the recess can include certain biasing elements that engage the post to prevent blade wobbling.

Abstract: The present invention involves a surgical instrument for guiding a delamination instrument into the cornea of a human eye. The instrument generally includes a handle portion and an end portion. The end portion has at least two flat (or substantially flat) members extending therefrom and in different directions. Each of the members being adapted to be inserted through an incision in the cornea to form a guide for a corneal delamination instrument. With at least two members extending in different directions one may easily access either pocket formed from a corneal incision with a single tool.

Abstract: An apparatus which attaches to microkeratome surgical devices. The disposable microkeratome blade housing apparatus securely attaches to the surgical devices but remains independent of the motor, gearing and cutting head components. In a first embodiment, the blade housing includes a knife edged blade, a blade holder, plaque and flexible coupling structure. The snap tight coupling structure provides a self-positioning, secure attachment of the housing to existing compatible and accommodating microkeratomes. In a second embodiment, the blade housing and cutting head are integral and include a knife edged blade, a blade holder, and a plaque. The blade housing/cutting head combination of the second embodiment is entirely disposable and fixedly secured to said motor. In both embodiments, the blade holder is acted upon by the motor and gearing to oscillate the blade holder in the housing.

Abstract: The invention applies to the medical instruments and can be used during refractional correcting excimer laser intrastromal keratectomy (REIK) procedure. The cannula has a hollow body and curved working part having lateral canals and a cavity, corresponding with the cavity of the body. The lateral canals are made for instillation and/or lavage of interface during the refractional correcting excimer laser intrastromal keratectomy (REIK). The longitudinal axes of the lateral canals are situated across the plane of flexure of the working part and are oriented at an angle, or angles, to the longitudinal axis of the working part. The working part has a narrowing at an end thereof, for putting in and/or separation of tissues, and the body and/or the working part have identical cross-sections and/or cross-sections whose shapes are not the same.

Abstract: Self-contained eye positioner having an annular vacuum ring which is attached by a rigid hollow tube to a syringe. The syringe, which also functions as a handle, provides a vacuum source, the vacuum of which is communicated to the annular vacuum ring to suctionally adhere the annular vacuum ring to the eyeball. No external vacuum source is required.

Abstract: The invention relates to an artificial chamber that can support and pressurize a donor cornea to extract a corneal graft. The artificial chamber has a stationary stem that is adapted to support a cornea. The stem has an inner channel that allows air to pressurize the cornea. The artificial chamber has an outer cap that can be moved in a downward direction to secure the cornea. The cap has an opening that exposes a portion of the cornea to allow for the extraction of a corneal graft. The outer cap is attached to an outer sleeve that is moved by rotation of a cam. The chamber includes a spring that exerts a clamping force onto the cornea. The clamping force can be adjusted by rotating an adjustment wheel. The adjustable spring force allows an operator to set a desired clamping force that is then repeated for each grafting procedure.

Abstract: A surgical device for cutting substantially across a cornea of an eye of a patient, the device including a positioning ring structured to be temporarily attached to a portion of the eye surrounding the cornea to be cut, and defining an aperture sized to receive and expose the cornea to be cut. The surgical device further includes a cutting head assembly structured to be guided and driven over an upper surface of the positioning ring in a generally arcuate path, and having a cutting element positioned therein and structured to oscillate laterally to facilitate smooth and effective cutting of the cornea. The cutting head assembly is structured to be detachably coupled to the positioning ring while simultaneously permitting movement of the cutting head assembly relative to the positioning ring along the generally arcuate path.

Abstract: An incising apparatus for cataract surgery is provided. The incising apparatus includes a handle having a proximal end and a distal end. A circular cutting band is adapted to slide along the handle. At least one stopper element is provided in the vicinity of the proximal end of the handle. The at least one stopper element is positioned within the interior of the circular band so as to restrict the motion of the circular band relative to the handle.

Abstract: Methods and apparatus for improving vision incorporate the effects of biodynamical and biomechanical (biological) responses of the eye. The eye produces a biological response to trauma, such as a LASIK keratectomy or other necessary traumatic procedure in preparation for refractive surgery. By observing the biological response, a prospective treatment to correct higher order aberrations is adjusted to compensate for the biological effects. An improved photorefractive surgery system incorporates one or more suitable diagnostic devices that provide biological response information in such a manner that the patient need not change position from that assumed for the surgical procedure.

Abstract: The illuminating light transmitted by the light guide inserted through the elongate inserted section is projected out of the distal end surface of the inserted section. The illuminated objects pass through the respective pupils of the two objective lens systems arranged in parallel within the distal end section of the inserted section and their images are formed on the focal surface. The respective images are transmitted to the rear side by one common relay lens system. The transmitted final images are formed respectively on the image taking surfaces of the image taking devices. The respective images photoelectrically converted by the respective image taking devices are processed to be signals, are displayed in the monitor and are stereo-inspected through shutter spectacles.