Technician, nurse, doctor, optician, optometrist. Keep your uncovered eye fixed on the central black dot on the grid. No changes necessary. No changes necessary. Some degree of apprehension or fear is normal and should be expected.
Discomfort disappears when the test is finished.
Disposable tissues or disposable eyepatches. Cover one eye, then the other. Stare at the black dot in the center. Answer the examiner's questions. Abnormal results call for further tests, such as ophthalmoscopy, visual-acuity testing, and fluorescein tests on blood vessels of the eye.