| Description | Front Features traditional Sloan optotypes that follow a "ETDRS 2000 Series" format including a combination of Charts 1 and 2. Near Point card uses Logarithmic acuity and includes distance equivalents in both meters and feet. Near Vision Card | Most acuity vision charts have the patient identify single letters in a line. Continuous text chart are designed to simulate everyday reading tasks for patients by using actual sentences. These sentences are calibrated to have a specific number of | HOTV optotypes are great for testing preliterate children 3-5 years in age. These optotypes are easily recognizable and can be taught to the child prior to testing. Also, test includes a response key for easier and more accurate testing. This chart | - Measures 12 x 18 in
- White letters on black background
- Includes tables, procedures and instructions
- Funded by the NIH
- Increments range from 1.3 LogMar (20/400) to -0.5 Log Mar (20/6.3)
- Increments listed in 0.1 LogMar steps
- Viewing
| Tumbling "E" charts, also known as Illiterate "E" charts, feature the use of only one optotype. This makes testing illiterate and mute patients easier. The patient only has to gesture the direction they see the "E" facing. Also the design of the "E" |