Charts & Distance Tests

This low contrast face stimulus is designed for assessment of vision for communication. Developed by Dr. Lea Hyvarinen, this set has 6 contrast levels: 1.25%, 2.5%, 5%, 10%, 25% and 100%. A blank card is included to cover the stimulus before presenta..

This prism bar has the range 1, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30, 35, 40 and 45D.  This instrument is ideal for measuring fusional reserves - which may help in the diagnosis of binocular vision problems - as well as for measuring ph..

The HOTV MassVat Distance Screening Book contains eight spiral-bound pages including notations for testing at 3m. The acuity range covered is 12m to 4.8m (20/80, 6/24 to 20/32, 6/9.5 equiv.). Response key included. Supplied card measures 8.25 x 25.4 ..

A direct reading phoria measurement technique using vertical prism displacement. Designed by Dr. Edwin Howell BSc Optom PHD and based on the principle attributed to Prentice and Thorington. A horizontal row of numbers is doubled vertically by the pri..

Illiterate 'E' 6M PaneI   ..

Highly calibrated for reproducible results across all languages Easy to use Easy to handle Easy to measure (by stopwatch) Easy to calculate (normal values and formula included)   Characteristics:  Set of 10 paragraphs of text in each..

This test type is printed on four stiff plasticised pages in booklet form. Text runs from J1 through to J20 on three of the pages and there is a telephone directory and railway timetable on the fourth page.     Size: 21 x 14 cm This test..

This Animated Fixation Stick has two pictures designed to intrigue children with their movement (holographic). The reverse side has N6 and N8 letters and a symbol NV Test. Impossible for a child to ignore!..

Kay Picture Uncrowded Near Vision Test Card.   The cards are packaged in a handy plastic wallet for safe storage in between uses. Kay Picture Uncrowded Near Vision Test Card.   The cards are packaged in a handy plastic wallet for safe s..

Ideal for testing acuity of children from 3 years of age as more subtle changes in definition between acuity ranges can be detected specifically in amblyopic children. Features:  3m working distance.  4 letters at each acuity level from ..

Kindergarten 3m Panel Will fit cabinets SDT-901-L and SDT-902-LW ..

Kindergarten 6m Panel Will fit cabinets SDT-903-L and SDT-904-LW   ..

Laminated Reading Test Type for Bifocal Wearers Laminated Reading Test Type for Bifocal Wearers Laminated Reading Test Type for Bifocal Wearers Laminated Reading Test Type for Bifocal Wearers Laminated Reading Test Type for Bifocal Wearers Laminated ..

Landolt C 6m Letter Panel Will fit cabinets SDT-903-L and SDT-904-LW   ..

Lea Gratings Paddles are an easy to use tool for measuring grating acuity of preverbal children and multi-disabled individuals of all ages. In infants, young children and adults at early developmental level of visual acuity that cannot be assessed wi..

Proportionally spaced for use at 3m. Line sizes range from 20/125, 20/10, 20/80, 20/63, 20/50, 20/40, 20/32, 20/25, 20/20, 20/16, 20/12.5, 20/12.5 and 20/8 (6/38 to 6/2.4) equivalent. Dimensions: 23 x 36 cm.   ..

Now it is easy to measure, record and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels. This chart presents numbers at the following contrast levels: black..

The LEA 3-D Puzzle is designed to help the child develop eye-hand coordination and learn to match and name the puzzle shapes. It can also serve as a neuro psychological assessment tool for patients with brain damage. The puzzle shapes are also symbol..

This test is designed for amblyopia screening and testing children. The background is grey except for a white rectangle spaced at 50% surrounding each line of symbols. Line sizes range from 20/80 to 20/16 (6/24 to 6/4.8) equivalent, 0.25 to..

This new test is designed for quick amblyopia testing or screening. The background is grey with the exception of a white rectangle surrounding each line of symbols. The booklet is spiral bound and designed for use at 3 meters. It covers a tot..

Test for quick measurement of low contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% contrast by measuring the distance at which the symbols are seen. 10M symbols correspond to visual acuity 0.10 at 1 meter, 0.05 at 0.5 meters and 0.3 at .3 m..

Logmar 2.5m ETDRS Chart 1 Original 2.5 metre viewing.  Acuity range 25.2m to 1.2M. Will fit illuminated cabinets SDT-392-LSV and SDT-396-LPV These Original Charts - Are the only standardised format acceptable in studies sponsored by the..

Logmar 2.5m ETDRS Chart 1 Revised 2.5 metre viewing.  Acuity range 25.2m to 1.2M. Will fit illuminated cabinets SDT-392-LSV and SDT-396-LPV These revised charts incorporate a slight change in the difficulty score for each of the ten Slo..

Logmar 2.5m ETDRS Chart 2 Original 2.5 metre viewing.  Acuity range 25.2m to 1.2M. Will fit illuminated cabinets SDT-392-LSV and SDT-396-LPV These Original Charts - Are the only standardised format acceptable in studies sponsored by the..

Logmar 2.5m ETDRS Chart 2 Revised 2.5 metre viewing.  Acuity range 25.2m to 1.2M. Will fit illuminated cabinets SDT-392-LSV and SDT-396-LPV These revised charts incorporate a slight change in the difficulty score for each of the ten Slo..