Getting comprehensive eye exams is the most important part of maintaining the healthy lifestyle. During an eye exam, optometrist or ophthalmologist performs various tests varying from reading an eye chart to more complex one, viewing back your eyes with a high-powered lens. Early diagnosis and treatment of eye problems can prevent vision loss.
These exams cannot be more than 45 to 90 mins depending on how your optometrist or ophthalmologist experienced and a number of tests he performed to completely evaluate the health of your eyes.
During eye exams you may encounter many of these tests below:
- A Case history including past and present eye history, medical surgery and detailed family history for proper diagnosis.
- Measurement of the visual acuity checks the sharpness of your vision with and without your corrective lens; usually done for both distance and near.
- Diagnosis of your prescription or refractive errors like myopia, hyperopia etc, based on objective (measurements) and subjective (your verbal response to the questions) techniques.
- Colour vision evaluation to rule out any colour blindness.
- Binocular vision assessment ( the ability of both eyes to work together as a team to see), evaluates conditions of eye teaming, eye focusing, eye tracking, visual perception and visual processing speed.
- Assessment of health of your eyes, both inside and outside using slit lamp biomicroscopy (bright light shined to see eyes healthy outside) and ophthalmoscope (evaluate inside of your eyes ie., retina)
- Neurological assessment including pupillary reaction, eye movements evaluation, and visual field test (peripheral vision test)
- Screening for glaucoma, measuring the pressure inside your eyes, your retina, optic nerve and peripheral vision evaluation.
- Additional test may be performed to confirm previous test results and for the thorough evaluation of your eyes to rule out possible problems. These can include gonioscopy, keratometry, optic nerve scans (OCT, GDx, HRT), contrast sensitivity.
- All these results are used in the final analysis of eye status and determination of your prescription lens to correct your refractive errors, eye training exercises or recommend to medical or surgical treatment.