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Vectographic Projector Slide Adult Slide This adult projector slide test depth perception and binocularity under distance conditions. The top portion of each slide is a standard non-vectographic projector slide. The bottom portion is a vectographic slide that contains suppression control targets, a distance stereo acuity test, fixation disparity and binocular balance. These slides fit most standard A-O and Marco projectors, and are adaptable to a 10' or 20' lane. REQUIRES POLARIZING SCREEN. -
Projector Slide Replacements MultiAcuity Projector Slide Letter Acuity, Tumbling "E", Allen Figure Test This family of projector slides are designed for testing all ages. Made of high quality photographic film, sealed between two pieces of glass to ensure sharp optotypes to maintain the integrity of your exam. Each slide must be adjusted for use on different length testing lanes. -
Designed by two low vision doctors. This chart has a 20/630 size number as well as numbers & tumbling "E's" that are 20/500, 20/400, & 20/317 sizes. These take the memory out of acuity testing. The 20/250 page & below have four numbers of the same size. This allows you to test each eye individually without concern for memoriztion. Also, by observing which number is seen first, the tester can decide which part of the field has the best fixation. Chart lists size by logmar & Snellen equivalent to 20/20. -
Projector Slide Replacements Family Practice Slide Letter Acuity, Astigmatic Clock, Tumbling "E", Allen Figures This family of projector slides are designed for testing all ages. Made of high quality photographic film, sealed between two pieces of glass to ensure sharp optotypes to maintain the integrity of your exam. Each slide must be adjusted for use on different length testing lanes.