MEASUREMENT OF FIXATIONAL STABILITY WHILE PERFORMING A HYPERACUITY TASK USING THE SCANNING LASER OPHTHALMOSCOPE - PRELIMINARY STUDIES

The confocal scanning laser ophthalmoscope (SLO) can be used for simultaneous eye movement measurement and precise placement of the test stimulus on the desired retinal location. We have implemented a two-point vernier hayperacuity test on the SLO. This stimulus paradigm has been used to investigate the quality, nature and site of an observer's fixation as a function of time while performing this task. This stimulus configuration is ideal for studying various types of eye movements such as drifts, tremor, saccades, microsaccades and tracking eye movements.