Frequently Asked Questions About Eye Tests and Treatments

Eye tests and treatments can feel confusing, especially if it is your first visit to an eye specialist. This guide answers the most common questions patients ask about eye exams, diagnostic tests, and treatment options, in simple, easy to understand language.

Questions About Eye Tests
What happens during a routine eye exam?
A routine eye exam usually checks your vision clarity, your glasses prescription, eye pressure, pupil reactions, and eye alignment and movements. The doctor also examines the front and back of your eye using special instruments, often after dilating the pupil, to look for early signs of disease.

How long does an eye exam take?
A standard eye exam typically takes thirty to sixty minutes. Allow extra time if dilation is needed, since the drops themselves take twenty to thirty minutes to work before the examination can begin.

What is a dilated eye exam?
A dilated eye exam uses special eye drops to widen the pupil, allowing the doctor to see the retina and optic nerve clearly. This helps detect conditions like diabetic retinopathy, glaucoma, and macular degeneration that may not be visible otherwise.

Will my vision be blurry after a dilated exam?
Yes. Vision is usually blurry and sensitive to light for about four to six hours after dilation, though this varies from person to person and can last longer. Children are given stronger drops and may stay dilated for up to twenty four hours, so plan school and activities accordingly. It is best to avoid driving during this time and to bring sunglasses or an attendant with you. Very rarely, dilating drops can trigger a sudden rise in eye pressure. If you develop severe eye pain, redness, halos around lights, or vomiting within a day of your exam, contact us or visit an emergency department immediately.

What is OCT and why is it used?
OCT stands for optical coherence tomography. It is a quick, non contact scan that creates detailed cross sectional images of the retina and the optic nerve, helping doctors detect very early changes caused by glaucoma, diabetic retinopathy, and macular degeneration.

What is a visual field test?
A visual field test maps both your central and your peripheral, or side, vision. It is commonly used to detect blind spots caused by glaucoma or other conditions affecting the optic nerve, and to track whether those spots are changing over time.

How often should I get an eye test if I wear glasses?
If you already wear glasses, we recommend an eye check once a year, since your prescription can change gradually over time. If you have diabetes, a family history of glaucoma, high myopia, or are over sixty, you may need to be seen more often. Your doctor will advise the right interval for you.

How often should I get my eyes checked if I have diabetes?
If you have type 2 diabetes, you should have a dilated eye exam at the time of diagnosis and at least once a year after that. If you have type 1 diabetes, the first exam is recommended five years after onset, then yearly. If you are pregnant or planning a pregnancy with either type, you should be examined before conception and again early in the first trimester.

Do I need a referral to see an eye specialist?
In India, no referral is needed for a routine eye exam. You can directly book an appointment with an ophthalmologist or optometrist. If you plan to use cashless insurance for a procedure, your insurer or TPA may ask for additional documentation.

Questions About Eye Treatments
What is the treatment for cataract?
Surgery is the only definitive treatment. It involves removing the clouded natural lens and replacing it with a clear artificial lens called an intraocular lens, restoring clear vision in most patients. No eye drops or medicines can dissolve or reverse a cataract. In very early cataract, an updated glasses prescription may be enough for a while, and surgery can wait until the cataract affects your daily activities.

Is cataract surgery painful?
Cataract surgery is usually performed under local or topical anesthesia and is minimally invasive. Most patients experience little to no pain during the procedure.

What is LASIK and who is it for?
LASIK is a laser procedure that reshapes the cornea to correct refractive errors such as myopia, hypermetropia, and astigmatism. It is suitable for people looking to reduce their dependence on glasses or contact lenses. Most candidates are at least eighteen years old with a prescription that has been stable for about a year, adequate corneal thickness, and no corneal disease such as keratoconus. If LASIK is not suitable, other options such as PRK, SMILE, or implantable contact lenses may be. A thorough eye evaluation is needed to confirm which procedure is right for you.

Is LASIK a permanent solution?
LASIK permanently reshapes the cornea, but the eye itself continues to change. Most patients will still need reading glasses from their forties onward as presbyopia develops, and a small number experience some regression, where the prescription drifts partly back, which is more common in those who started with a very high power. LASIK also does not remove the long term retinal risks that come with high myopia, so if you were strongly short sighted before surgery you should continue having your retina checked regularly.

How is glaucoma treated?
Glaucoma treatment focuses on lowering eye pressure to prevent further damage to the optic nerve. Lowering the pressure helps even when your readings are already within the normal range, which is the case in a form called normal tension glaucoma. Treatment may begin with prescription eye drops or with laser, both of which are accepted first options today, and surgery is considered if pressure remains uncontrolled.

Can glaucoma be cured?
Glaucoma cannot be cured, but it can usually be controlled with consistent treatment and monitoring. Vision already lost to glaucoma cannot be recovered, which is why staying on treatment and attending follow up visits matters so much, even when your eyes feel completely normal.

What is myopia control and is it different from regular glasses?
Myopia control refers to treatments designed to slow the progression of nearsightedness in children, unlike regular glasses, which only correct blurry vision without slowing the underlying eye growth. Options include myopia control spectacle lenses, dual focus daily disposable contact lenses, Ortho-K lenses, and low dose atropine eye drops. Each of these slows progression by roughly thirty to sixty percent depending on the method and the child. Ortho-K carries a small risk of corneal infection and needs careful hygiene and follow up. Spending more time outdoors, around one to two hours a day, also helps delay the onset and progression of myopia.

How is computer vision syndrome treated?
Treatment usually includes regular screen breaks using the twenty twenty twenty rule, where every twenty minutes you look at something about twenty feet away for twenty seconds, along with artificial tears, conscious blinking, adjusting screen brightness and distance, and correcting any underlying refractive error with updated glasses. Screen use causes discomfort and strain but does not cause permanent damage to adult eyes.

General QuestionsAre eye tests covered by insurance?
Coverage depends on your specific insurance plan. Cataract surgery and most medical eye conditions are generally covered, subject to waiting periods and sub limits. Routine eye tests are usually not covered unless your policy includes OPD benefits. LASIK and other laser vision correction procedures are excluded by most Indian policies unless your refractive power is 7.5 dioptres or higher and specific medical criteria are met, so confirm with your insurer before booking.

What should I bring to my eye appointment?
It helps to bring any previous eye reports, current glasses or contact lens prescription, a list of medications, and insurance details if applicable.

Can children undergo the same eye tests as adults?
Yes, with some adjustments. Pediatric eye exams are designed to be comfortable for children and check for common childhood conditions such as refractive errors, squint, and lazy eye.

How do I know which eye test or treatment I need?
The best way to know is through a comprehensive eye examination. Your eye doctor will recommend specific tests or treatments based on your symptoms, age, and overall eye health.

When Should I See an Eye Doctor Urgently?
Some symptoms need same day attention rather than a routine appointment. Seek urgent care if you experience sudden loss of vision, a curtain or shadow moving across your vision, a sudden shower of new floaters or flashes of light, severe eye pain with halos around lights or vomiting, sudden double vision, or any injury to the eye. These can signal conditions such as retinal detachment or acute glaucoma, where treatment within hours makes a real difference to the outcome.

Final Thoughts
Understanding what to expect from eye tests and treatments can make visiting an eye specialist much less stressful. If you still have questions specific to your eyes or your family’s eye health, the best next step is a comprehensive eye examination with a qualified specialist.
Eye Health Clinic offers complete eye tests and treatments, including cataract surgery, LASIK, glaucoma care, and myopia control, across our Noida, Greater Noida, and Delhi clinics.
You can book an appointment at any Eye Health Clinic location to get your specific questions answered by an experienced eye doctor.