Abstract: There is disclosed a chuck assembly defining a longitudinal axis for internally holding a hollow substrate having an open first end and a second end including: (a) an alignment shoulder positioned along the longitudinal axis; (b) an end portion, positioned along the longitudinal axis, that is adapted to be inserted into the substrate through the open first end and comprised of a polymeric member, wherein the polymeric member has a changeable width including a smaller width to permit insertion of the polymeric member into the substrate and a larger width to contact the polymeric member with the substrate inner surface, and the polymeric member is moveable along the longitudinal axis; and (c) a width changing apparatus operatively coupled to the polymeric member, wherein the polymeric member, which is in contact with the substrate inner surface, pulls the substrate a distance along the longitudinal axis towards the alignment shoulder when the polymeric member moves towards the alignment shoulder.

Abstract: An incision guide instrument for radial keratotomy has a lens positionable over a cornea, containing an incision guide slot adjacent to which is disposed two mirror surfaces within the lens. The mirrors are angled to allow a surgeon to observe and control the blade depth penetration into the cornea. The slotted, mirrored lens is rotatable and has clip and notch means to locate any of sixteen different radial incision positions. Transverse arcuate cuts are also allowed by the rotatable lens, and a stop means prevents the transverse cuts from contacting the radial cuts. An annular cone disposed over the sclera defines a vacuum chamber for holding the eye in position relative to the lens.

Abstract: A retroilluminating indirect gonioprism comprising an optical prism, an oblique reflector and light baffle to reduce the intensity of light reflected from the gonioprism anterior surface back toward an observer, and an opaque surface to substantially prevent retinal burns when using the gonioprism with a directed energy beam. Retroillumination of anterior chamber structures is provided by fiber optics incorporated into the gonioprism housing which direct light from an external source into the limbal region of the eye. This retroillumination increases the accuracy of identification of structural landmarks (e.g., the scleral spur) which are important in argon laser trabeculoplasty. A directed energy beam, as from a high energy laser, may be directed through the gonioprism while an eye structure on which the beam is focussed is observed through the gonioprism.

Abstract: An incision guide instrument for radial keratotomy has a lens positionable over a cornea, containing an incision guide slot adjacent to which is disposed two mirror surfaces within the lens. The mirrors are angled to allow a surgeon to observe and control the blade depth penetration into the cornea. The slotted, mirrored lens is rotatable and has clip and notch means to locate any of sixteen different radial incision positions. Transverse arcuate cuts are also allowed by the rotatable lens, and a stop means prevents the transverse cuts from contacting the radial cuts. An annular cone disposed over the sclera defines a vacuum chamber for holding the eye in position relative to the lens.

Abstract: A dip coat process material handling system and method for coating multiple layers of material on a plurality of workpieces, in particular for producing a multi-layer optical photoconductive drum, wherein a plurality of pipes are suspended from a carrier pallet which transports the workpieces through a dip coat cell housing various dip coating stations. The system includes a load/unload station, vertical and horizontal transport systems for transporting the carrier pallet having workpieces loaded thereon to the various dip coating stations, a drying/cooling booth, and a return conveyor system. The invention allows complete dip coat processing to be completed in an in-line configuration while the workpieces are attached to the carrier pallet, thereby eliminating load/unload steps at each dip coating station to provide efficient and flexible processing of materials.

Abstract: A mandrel for transporting a hollow cylinder including an elongated arm, a dish shaped disk adjacent one end of the elongated arm, the dish shaped disk having a flexible lip flared inclined away from the elongated arm, the flared flexible lip having a circular outermost edge, and a reciprocable presser means adapted to partially flatten at least a portion of the flexible lip adjacent to and including the outermost edge of the lip toward the elongated arm to increase the length of the circumference of the circular outermost edge of the lip. This mandrel is used in a process for coating hollow cylinders.