Universal Patient Response Button - compatible with Zeiss Humphrey visual fields Clicker Brand_Welch Allyn OCT scanning and resolution are

OCT scanning and resolution are excellent

Optovue iVue is the benchmark for eye care practitioners seeking unmatched OCT performance and value—with capabilities you would expect to cost far more

A non-contact optical device that measures the distance from the corneal vertex to the retinal pigment epithelium by partial coherence interferometry

IR and UV barrier

Control of cylinder axis and power testing is amazingly simple

Universal Patient Response Button - compatible with Zeiss Humphrey visual fields Clicker Brand_Welch Allyn OCT scanning and resolution areThis is a universal patient response button, also called "the clicker", which can be used for visual field units. Please check the plug in the photo compared to your unit. This is NOT compatible with the FDT and Matrix units. Please see our other listing for the correct plug. Compatible with Zeiss Humphrey 720, 720i, 730, 735, 740, 740i, 745, 745i, 750, 750i