* Testing is done monocularly. * Patient is asked to sit in front of an illuminated vision chart, at 6 meter distance. * Initial measurement of best corrected visual acuity should be done. * Locate fovea using ophthalmoscope. * Ask the patient to look at the bright light of the ophthalmoscope for 10 seconds. * Time taken to read any three letters of the pre-test visual acuity is noted. * Normal recovery time is 15–30 seconds.
Photostress test
Patch test
Dosimetry
Evaporimetry
Iatrochemistry
Swinging light test
Draize test
Tzanck test