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Optokinetic Drum - Adult White with Black Stripes Accurately test for acuity when rotated 8 to 10 RPMs at different reading distance. 10" long and 8" diameter. Item #: DAL300 -
Adult LEA NUMBERS® chart for ETDRS Illuminated light boxes. Fits all existing ETDRS cabinets including both the ESV3000 and ESC2000. LEA NUMBERS® ETDRS chart contains optotypes in proportionally spaced (logMAR) lines; lines range from 20/200 to 20/8 (6/60 to 6/2.4) equivalent, 0.10 to 2.50. Fits in ESV3000 ETDRS illuminated cabinet. -
The Single Symbol Book is ideal for people who cannot perform when tested with a line test. This book can help determine the best resolution of the visual pathway in a child/adult with amblyopia or impaired vision. Single optotype line sizes from 20/200 to 20/8 (6/60 to 6/2.4) equivalent. -
New renovated version with rounded plastic board and new metal structure that is adjustable at different heights. The support is light and made of metal and aluminum. The base comes with wheels for easier movement around the office. It develops the skills of quickly moving the eyes in an accurate and efficient way from a point to another. It also lets to integrate eye movement and space evaluation with the skill of visually guiding the body movement in a coordinated and efficient fashion. -
Stainless steel handles and a red filter on a stick are held in a felt lined case for convenience as well as scratch protection. Item #: ASPSSET+ -
A.) "COMPLETE BAR" Includes prisms: 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40 & 45 B.) "EXTENDED BAR" Includes prisms: 1, 2, 4, 6, 8, 10, 12, 15, 20 and 25. C.) "BETTER BAR" Includes prisms: 1, 3, 5, 10, 15 & 20. D.) "GOOD BAR" Includes prisms: 3, 5, 10, 15 & 20. Item #: AHB+ -
Six-piece set includes: 2D,3D,4D,5D,6D and 8D flippers. Professional training with two prism pairs. Beginning with the highest powers through which a patient can fuse and focus, prism flippers are exchanged for next higher powers through the training sequence. GREAT FOR BEGINNING PRESBYOPES WHO HAVE EXO WITH THEIR BIFOCALS! All flippers have corrected curve lenses and come in a deluxe black carrying case. Save money with this kit! Note: Prism diopter powers are listed per lens. For example, a 4PD flipper will have two 4PD lenses to make a 8PD range. So, 4PD flipper = 8PD range. Item #: BC1275SETCC -
Farnsworth Test for Congenital and Acquired color defects. The Farnsworth D-15 contains a reference disc holding notation 10 B 5 4 and fifteen numbered discs which make up an incomplete color circle. The patient arranges the discs and then evaluation of the patients arrangement separates 'normal' color perception from moderate and strong defects in deutan, protan or tritan axis color discrimination. The disks are spread out on a table and arranged by the patient. The Farnsworth D-15 test is a subset of the well known Farnsworth 100 Hue Test. It is intended for classification instead of in-depth study of color vision defects. The D-15 and 100 hue tests are correlated. Growing Importance of Color deficiency Screening: In addition to congenital color deficiency screening there is growing evidence that adult acquired color deficiency, especially in yellow and blue perception, can indicate medical toxicity and other problems. Increasingly complex security and medical systems also require verification of all three types of color receptors. How the D-15 test works: The Farnsworth D15 is called 'dichotomous' because it is designed to separate subjects into one of two groups, 1) Strongly color deficient or 2) Mildly color deficient or color normal. This is accomplished by the arrangement of vivid (saturated) colored discs. A perfect score shows normal color perception. A non-perfect score is used to determine a medium or strong color deficiency. -
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. -
Slayer 3D Variable Tranaglyph. Replaces the popular Topper Vectogram. Size: 10.5" x 5.5" Material: Red/Green slides on transparent vinyl Usage: Can be used with Dual Polachrome Trainer or other slide holders. -
8-1/4" x 5-1/2" Polarized vectograms ensure testing and training at actual distances. vectograms stabalize fusion and steropsis, eliminate suppression and develop simultaneous vision. Used in monocular, binocular, pursuit and saccadic training, vectograms help correct and prevent anomalies involving projection and hand-eye coordination. Ideal for use with Bernell's Dual Polachrome™ Trainer. -
This test can be used with infants, children and adults with low cognitive abilities when communication difficulties prohibit the use of optotype tests to measure visual acuity. This test measures an individual's ability to detect the presence of parallel lines of decreasing width to provide information about the function of some parts of visual pathways. Item #: GF1300
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