Very easy to hold and use for changing luminance and on/off.
Features:
- Hard keys for best tactile feel
- Uses 3 AAA batteries (included)
No products in the cart.
Very easy to hold and use for changing luminance and on/off.
Very easy to hold and use for changing luminance and on/off.
Features:
| Brands | Precision Vision |
|---|


Pelli-Robson Trans-Illuminated Contrast Sensitivity Chart
The trans-illuminated versions are identical to the original “Gold Standard” Pelli-Robson Contrast Sensitivity Charts. These charts cover ¾ of the original contrast range and are manufactured to the same true log steps and use the same letters and letter sizes as the originals.

Continuous text cards simulate everyday tasks and activities that patients may encounter, such as reading the newspaper.
Designed as a simple screen test. The usual question for a reading test is: What is the smallest (black) line you can read? On the contrast card one adds the question What is the smallest (grey) line you can read? The difference between the two measurements will be obvious and can simply be expressed in lines. Preliminary findings indicate a 2 or 3 line difference is normal.
Unrelated simple sentences at 4th grade level.
Serves as an educational tool to demonstrate the effect of contrast deficits to patients and family members.

Features Traditional Sloan Optotypes. For use at 100 cm (1m). Includes two charts which may be wall or easel mounted and score sheets.
Acuity Level 40M (20/320) at 1 Meter.
WhatsApp us

