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| Company | Precision Vision® | Precision Vision® | Precision Vision® | Precision Vision® |
| Item | Rabin Contrast Sensitivity (CS) Test | Colenbrander Reading, Intermediate and Computer Chart (2 card set) | Multi-Contrast Sloan Letter Flip Book | Pelli-Robson SLOAN Letter Contrast Chart |
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| Description | Each line on the Rabin Contrast Sensitivity Test is a lower contrast than the one before it, using Log CS steps. This progression in contrasts helps to identify the patient's contrast sensitivity. Furthermore, the test helps to detect subtle effects | Designed by: Dr. August Colenbrander Conventional, high-contrast letter chart acuity captures only one aspect of visual performance. Low contrast acuity is equally important for activities of daily living, since most everyday objects have less than | 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 | Designed by DG Pelli, JG Robson and A J Wilkins, because they see contrast sensitivity as a realistic assessment of how well the patient sees large faint objects. The chart follows the luminance, font, and letter spacing recommendations of the |
| Features | - 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 feet)
- Log CS increases 0.25 steps per row (0.05 log CS/letter)
- For use with CAT. NO. 914 Small Illuminator Cabinet
- Includes soft-tipped pointer, recording forms and test instructions
- Available with glare filter CAT. NO. 2147 and low photopic filter CAT. NO. 2148
| - Calibrated for 40 cm (16 in), 63 cm (25 in), 100 cm (40 in)
- Measures 8.5" x 11"
- Includes complete instructions and recording sheet
- Uses 10% calibrated Contrast Sensitivity level with Acuity
| - 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.
| - Features Traditional Sloan Optotypes
- For use at 40 in (1m)
- Includes two charts and two scoring pads
- Illumination of 85 cd/m² is key to good results
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| Product Number | 2126 | 4070 | 2180 | Pelli-Robson |
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