- 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.
LEA GRATINGS, a Preferential Looking Test
SKU : 253300
LEA GRATINGS are for preferential looking test situations with infants or children and adults with disabilities to determine detection acuity
Brands | Good Lite |
---|
Related products
-
Low Contrast, Pediatric Opthalmology
LEA SYMBOLS,® Low Contrast Test, 10M
0 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 Card
0 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 Puzzle
0 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 Test
Pediatric Opthalmology, Standard Office Vision Therapy Kit, Stereo Acuity Testing, Vision TherapyRandom Dot E Depth Perception Test
0 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