Ophthalmic perimeter PTS 2000

Perimetry

Perimetry is the systematic measurement of visual field function (the total area where objects can be seen in the peripheral vision while the eye is focused on a central point). The two most commonly used types of perimetry are Goldmann kinetic perimetry and threshold static automated perimetry.

A visual field test (perimetry) will detect loss of peripheral vision and provide a map of that loss which will be helpful in diagnosing the cause of the loss.

As creatures with spherical vision, we not only see what’s straight ahead but also what’s beside us—known as our peripheral vision. And while visual acuity tests our ability to distinguish fine lines of singular objects, visual field testing, or perimetry, takes our entire field of vision into consideration

Throughout the exam, a computer records the location and timing of each flash and the patient’s corresponding—or lack of—response. Once the test is complete, a printout expresses any problematic areas of vision loss, where the patient did not see a flash of light.

These complications can be a result of:

Glaucoma
Brain tumors
Pituitary disease
Stroke
Other neurological deficiencies

Additionally, perimetry testing can help monitor vision after diagnosis to ensure glaucoma treatment is effective in preventing further vision loss. More vision loss means optic nerve damage.