Clinical Trial Items, Ophthalmic Clinical Research
SKU : 7021 7022 7023
Jackson Cross Cylinder 0.25 and 0.50 and 1.00
SKU : 7021 7022 7023
Hand Held Jackson Crossed Cylinder is mounted on a knurled handle, making it easy to flip.
Hand Held Jackson Crossed Cylinder is mounted on a knurled handle, making it easy to flip.
The high optical quality lens has red and black axis etching.
| Brands | Precision Vision |
|---|
Related products
-
Illiminator Cabinet, Ophthalmic Clinical Research
Large LED Illuminator Cabinet 300
2425LED-300 7 Presets at 3, 10, 40, 85, 160, 320 and 800 cd/m2
This configuration allows for testing vision under several different luminance levels with optional charts in high contrast, low contrast and threshold contrast and different test distances.SKU: 2425LED-300 -
-
Near Vision Chart, Ophthalmic Clinical Research
Colenbrander Reading Card Low Vision and Mixed Contrast English
Near Vision Chart, Ophthalmic Clinical ResearchColenbrander Reading Card Low Vision and Mixed Contrast English
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.
SKU: 4061_
