- LEA GRATINGS are for preferential looking test situations with infants or children and adults with disabilities to determine detection acuity.
- Grating levels printed on each handle are: 0.25, 0.5, 1.0, 2.0, 4.0 and 8.0 cpcm (cycles per centimeter of surface).
- Includes instructions and storage case. 4 paddles 8″ (20 cm) in diameter.
Low Contrast, Pediatric Opthalmology
LEA SYMBOLS,® Low Contrast Test, 10M0 out of 5(0)
Test for quick measurement of low Contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% Contrast by measuring the distance where the symbols are seen. 10M symbols correspond to visual acuity 0.10 at 1 m, 0.05 at 0.5 m and 0.3 at 3 m. VA values are thus easy to calculate. Test includes a table for conversion to Snellen equivalent VA values, a response keys and instructions. 6 pages, 3.25″ x 9″ (8.25 cm x 22.9 cm).SKU: 251100
Near Visual Acuity Testing, Pediatric Opthalmology
Sloan Letter Near Vision Card0 out of 5(0)
Standardized adult Sloan Letter near vision card with proportionally spaced (logMAR) lines in ETDRS, format; line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent.
16 inch, 40 cm testing distance.SKU: 729000
LEA Core Test, Pediatric Opthalmology
LEA 3-D Puzzle0 out of 5(0)
The LEA 3-D Puzzle is designed for supporting the development of the concept of “same”, first with colors, then with black & white concrete forms that are prerequisites for the measurement of recognition acuity with the LEA SYMBOLS® tests at an early age.SKU: 251600
Pediatric Opthalmology, Standard Office Vision Therapy Kit, Stereo Acuity Testing, Vision Therapy
Random Dot E Depth Perception TestPediatric Opthalmology, Standard Office Vision Therapy Kit, Stereo Acuity Testing, Vision Therapy
Random Dot E Depth Perception Test0 out of 5(0)
Stereoacuity depth preception test designed to rapidly test for amblyopia and strabismus in early and non-readers and non-verbal children and adults.SKU: 101550