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LKC Technologies

Electrophysiology testing includes a battery of tests which can be used to provide information about the visual system beyond the standard clinical examination of the eye. The primary objective of the electophysiological examination is to assess the function of the visual pathway from the photoreceptors of the retina to the visual cortex of the brain. Information obtained from these diagnostic tests helps establish the correct diagnosis or may rule out related ophthalmic diseases.

Electrophysiologic testing is useful in diagnosing a variety of inherited retinal diseases, toxic drug exposure, intraocular foreign bodies, and retinal vascular occlusions. Electrophysiologic testing is performed most often in large referral centers which have expertise in obtaining and interpreting these data. The data are used in conjunction with the clinical examination and other tests (perimetry, dark adaptometry) to establish the correct diagnosis


The UTAS is LKC's most comprehensive system and includes four recording channels and has two Ganzfeld options, Sunburst for human and small animal patients and BigShot for larger use.

The Sunburst Ganzfeld is the world's brightest and most capable color LED Ganzfeld with: standard ISCEV protocols, on/off response, double flash, S-Cone, Photopic Negative, and Scotopic Threshold Response ERGs. Sunburst and BigShot have a dark adaptometry option. The UTAS system also features the UBA-4204 amplifier insuring low noise recording in any environment with fiber optic connection and no more ground electrode needed.

The UTAS can be enhanced by the addition of beneficial items such as a color or white-only mini-Ganzfeld stimulator (CMGS-1 or MGS-2) and can also be used with a notebook or desktop computer.


The standard software package for either system includes electroretinogram (ERG), electro-oculogram (EOG), and visual evoked potential (VEP) testing protocols, which meet the International Society for the Clinical Electrophysiology of Vision's (ISCEV) standard. Either system can incorporate multi-focal ERG/VEP (MFERG/MFVEP) software. The UTAS and EPIC-4000 can also be obtained as a "stand-alone" system, with MFERG/MFVEP software only.

The UTAS has several software options in addition to those of the EPIC-4000, such as storing individual sweeps from an averaged set and the ability to view and print up to ten waveforms simultaneously versus five with the EPIC-4000.

Stat One Services Ltd are the UK agent for this equipment and are happy to provide support and quotations.