| Description | This flip book is the smaller version of the Cat. No. 2125. Cat. No. 2180 includes three levels of contrast sensitivity; Acuity, 2.5% and 1.25%. This contrast flip book is great for the use in clinical trials and research studies. It is printed on | Test Includes CAT. NO. 2126 Rabin Contrast Sensitivity Test CAT. NO. 2147 Glare Filter CAT. NO. 2148 Low Photopic Filter CAT. NO. 914 Small Illuminator Cabinet CAT. NO. 915 Adjustable Base | Precision Vision offers a variety of Low Contrast and Mixed Contrast Eye Charts for testing Contrast Sensitivity. Notations for testing at Near Vision, 1 meter, 2 meters, 2.5 meters, 3 meters, 4 meters and Multi-distance. Products range from Flip | Uses - Establishing baseline contrast sensitivity prior to and after an intervention(such as cataract extraction, LASIK, or other refractive surgery)
- Identifying functional losses in low contrast perception (often associated with
| This contrast sensitivity flip book includes a series of seven contrast levels for accurate and precise vision testing. This levels decrease throughout the test beginning with acuity, 25%, 10%, 5%, 2.5%, 1.25% and ending with .06%. The use of several |
| Features | - For testing at 2 meters (6.5 ft.)
- Each page it's own contrast level at 100%, 2.5% and 1.25%
- Acuity range 20M to 1.6M
- Includes test instructions, recording forms (Cat. No. 2514) and soft-tipped pointer
- Measures 13.5 X 14 in.
| - A new contrast sensitivity test comparable to the small letter contrast test
- Detects subtle effects of defocus, low luminance and glare
- 20/50 letter size at 4 meters (13 ft.)
- Log CS increases 0.25 steps per row (0.05 log CS/ letter)
- Includes soft-tipped pointer, recording forms and test instructions
| Inquire | - Three charts, for the left eye, right eye and binocular testing, or for repeated testing without letter sequence memorization
- Rapid administration, with easy, accurate scoring
- Easy to store and protect
- Easy to illuminate (e.g., with instrument stand lamp)
- Each chart mounted on durable plastic
- Designed for near testing (40 or 50 cm)
- Low cost
| - Notations for testing at 1 meter (40 in.)
- Acuity range 20M to 1.6M (20/200, 6/120 to 20/32, 6/9.5 equiv.)
- Contrast varies by page: full contrast, 25% , 10%, 5%, 2.5%, 1.25%, and .06%
- Spiral bound
- Test includes a soft-tipped pointer, 1 mater cord, recording forms (CAT. NO. 2514) and instructions
- Measures 36 X 36cm (14.25 X 14.25 in.)
- Traditional Sloan Optotypes
- Uses different optotype combinations for each level to prevent undesired memorization
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