162 OPHTHALMOLOGY • INSTRUMENT AND BOOK SUPPLEMENT 1983

retinal integrity. Addition of the Nicolet Ganzfeld permits quantitative, repeatable measurements of retinal function. Whole-retina responses are assured through use of a large, sealed globe; isolation of rod and cone contributions is accomplished through_ luminance and filter settings completely under remote control. Two high-efficiency strobe units, one optimized for high output and the other for high frequency assure the widest possible range of testing conditions. Automatic control of background illumination by regulated DC lamps assures that neither background color temperature nor homogeneity of illumination changes as background luminance is varied.

EOG-The Nicolet CA 1000/Ganzfeld combination includes automatic stimulus sequencing, precisely­controlled background illumination and DC response amplification for electro-oculography. This powerful combination makes possible even the most subtle differential diagnoses of retinal dystrophies.

VER-The visual evoked response, a standard test for retrobulbar neuritis, is now recognized as one of the most discriminating indicators of macular function behind an opaque vitreous or lens. Nicolet systems offer new flexibility in testing the VER, with flash stimulation for full- and hemi-field testing of the central visual pathways.

Nicolet Biomedical's unique modular approach allows purchase of only the components you need, with the option to upgrade to more capability at any time. The built-in flexibility of this approach assures that future developments in electrodiagnostic testing will be fully compatible with your Nicolet CA 1000.

NICOLET PATHFINDER II Evoked Potential Computer System The Nicolet Pathfinder II offers a powerful signal­

processing minicomputer programmed for state-of­the-art data acquisition and analysis. The additional processing capacity of the Nicolet Pathfinder II includes: Dual timebase option for completely independent

recording of short and long-latency responses to the same stimulus.

Storage of all test parameters with the data, for error-free record keeping.

Multiprocessing for simultaneous acquisition and plotting of data.

Nicolet Biomedical instruments are backed by a full one-year warranty, plus a service and technical support staff unmatched in the industry. Regular seminars and workshops keep you informed of the latest developments and techniques in all areas of electrodiagnostic testing.

Exophthalmometers

R. O. Gulden & Co., Inc. Luedde Exophthalmometer

Fast method of measuring exophthalmos

Clear plastic with mm lines on both sides to check for parallax

In leather case Price on request

Fluorophotometer

Coherent, Inc. Fluorotron ™ Fluorophotometer

Provides the clinician with precise measurement of micro amounts of fluorescein leaking through the blood retinal barriers and the blood aqueous barrier. The Fluoroptron incorporates the latest technology in electrooptics and microcomputers. The operation is fully automatic and has eliminated the slit-lamp corneal contact lenses, and problems with calibration.

The CRT and disc format features a graphic screen display and a micro-computer for instant history comparison and precise scan repeatability. Specialists have proven this method of analysis can be used to detect diabetic retinopathy at the earliest stages and to determine aqueous flow and endothelial permeability.

Price $29,950

Frame Repairs

Mercer Enterprises Mercer Plastic Frame Repair Kit

Makes possible the satisfactory repair of a broken plastic frame in minutes

Price $74.50 (postage paid when check is sent with order)

One-year guaranteed satisfaction warranty

Instruction · Models

Ocular Instruments, Inc. Pathological Eye Model Set #OPEMS

The eye models were designed primarily to assist in teaching slit-lamp biomicroscopy and ophthalmoscopy. Every effort has been made to duplicate pathological problems found in the human eye. A peg on the back of each eye model fits into the Krieger Holder, which can be attached to any modern day slit lamp. When a complete set is purchased, the three eye models and accessories are delivered in a walnut instrument case.

Price $750; 180-warranty

Intraocular Lenses

American Medical Optics Intraocular Lenses full-line .

Kelman Tripod anterior chamber lenses: AC20, AC21 Omnifit, AC25 (new small incision version)