| Description | Patti Stripe paddles are highly useful for testing the contrast sensitivity of children, infants, and those with mental disabilities. The contrast sensitivity is tested by placing the gray paddle in front and the grated paddle behind and sliding it | 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 |
| Features | - Patti Stripes consists of six gratings at 0.3, 0.6, 1.2, 2.4, 4.8 and 9.6 CPCM (cycles per centimeter) along with the CPD (cycles per degree) for the three test distances of 25, 50, and 100 cm (10, 20 and 40 in.) printed on the handle.
- Set includes four paddles, three with gratings printed on both sides and one solid gray face for presentation.
- Extremely durable made from 4 mm plastic
- Can be washed with soap and water or cleaned with alcohol
- These will hold up to years of service
- Measures 17.8 X 32 cm (7 X 12.5 in.)
| - 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.
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