The<unk>  is clinically useful in diabetes, glaucoma, macular degeneration etc. Diabetic retinopathy affects the microvasculature of the inner retina and causes neurodegeneration. Several studies reported that PSRT is elevated in people with diabetes. Recovery time is more in macular diseases (50 seconds or more) than postretinal (e.g.optic nerve) diseases. Elevated PSRT has also been found in primary open angle glaucoma (POAG) which is characterized by progressive death of the retinal ganglion cells. Amblyopic eyes with normal fundus also have normal recovery time.
Photostress test
Patch test
Dosimetry
Evaporimetry
Iatrochemistry
Swinging light test
Draize test
Tzanck test