Contrast Sensitivity - ETDRS Acuity
Change in the practice of eye care occurs at a rapid pace. New testing technologies such as contrast sensitivity, contrast acuity, glare sensitivity and ETDRS acuity are being more widely used to measure the quality of vision related to eye care treatments. This is particularly important now that new surgical techniques, such as LASIK eye surgery, have excelled to a level where many patients attain 20/20 or better standard visual acuity.
As treatments improve, so must the testing technology. Standardization of contrast sensitivity, glare testing, ETDRS acuity, and other types of LogMAR testing the VectorVision CSV-1000, has made these tests even more sensitive, accurate and reliable. VectorVision instruments provide the ability to detect and quantify subtle changes in vision.
The VectorVision testing equipment has become the worldwide benchmark for standardized contrast sensitivity and ETDRS acuity testing. The CSV-1000 device is used in more than 50 countries to aid in preserving patients most precious sense; eyesight.
Contrast Sensitivity for Cataract Surgery Evaluation
Contrast sensitivity is very useful for evaluating cataracts and documenting whether the patient's vision loss is substantial enough to warrant cataract surgery. Before the surgery, a cataract patient may score well on a standard acuity test, but see poorly in real-world situations. This same patient will typically score very poorly on the contrast sensitivity test, showing that the patient is in need of surgery.
Contrast Sensitivity To Evaluate Multi-Focal Treatment For Presbyopia
Multifocal contact lenses and IOLs are used to treat patients with presbyopia. Contrast sensitivity can be used to determine the quality of the presbyopia correction. For contact lens patients, they can be measure with a single lens and then with a multifocal lens to compare the difference in presbyopia correction. For IOL patients, the contrast sensitivity can be compared to the scores of other patients in a similar age group.