Comparison of cathode ray tube and liquid crystal display stimulators for use in multifocal VEP.

Purpose: To compare the modified signal-to-noise ratio (SNR*) of multifocal visual evoked potential (mfVEP) responses elicited by a cathode ray tube (CRT) and liquid crystal display (LCD) monitor in normal subjects.

Methods: An LCD monitor and CRT monitor were luminance and contrast matched. Luminance stability and the effect of viewing angle on luminance and contrast was measured for both screens.

Delayed presentation of melanoma-associated retinopathy and subsequent resolution with cytoreduction surgery.

Background: To present a case of melanoma-associated retinopathy (MAR) which manifested 26 months prior to a formal diagnosis of melanoma.

Methods: Case report.

Results: A 72-year-old female presented with bilateral continuous photopsia consistent with MAR of 7-months duration.