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Dry Eye Syndrome
Reduced or poor-quality tears leave the surface dry, gritty and tired — extremely common with screen use.
Watch for: Burning, gritty feeling, watering, blurry vision that clears on blinking.
📚 Patient Education Centre
Understand Your Eyes,
Understand Your Eyes,
Protect Your Vision
A simple, illustrated guide to how your eyes work, the most common eye problems, exercises that keep them healthy, and answers to the questions patients ask us most.
Eye Structure
How the Human Eye Works
Light enters through the cornea and pupil, is focused by the lens onto the retina, and travels along the optic nerve to the brain.
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1. Cornea
The clear front dome that focuses most of the incoming light. Keeping it moist with regular blinking prevents dryness and blur.
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2. Iris & Pupil
The coloured iris controls the pupil size, adjusting how much light enters — like the aperture of a camera.
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3. Lens
A flexible focusing lens that changes shape to see near and far. It stiffens with age (presbyopia).
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4. Retina
The light-sensitive layer at the back that converts light into nerve signals — the "film" of the eye.
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5. Macula
The tiny central part of the retina responsible for sharp, detailed central vision and reading.
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6. Optic Nerve
The cable that carries visual signals from the retina to the brain, where images are actually "seen".
Common Problems
Eye Diseases & Conditions
Know the signs early. Most eye conditions are treatable when caught in time — never ignore persistent symptoms.
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Digital Eye Strain
Prolonged screen focus reduces blink rate up to 60% and overworks focusing muscles.
Watch for: Headache, tired eyes, neck pain, difficulty refocusing after screens.
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Refractive Errors
Myopia, hyperopia and astigmatism occur when light does not focus correctly on the retina.
Watch for: Blurry distance or near vision, squinting, eye fatigue, headaches.
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Cataract
The natural lens becomes cloudy with age, scattering light and dimming vision.
Watch for: Cloudy/dim vision, glare at night, faded colours, frequent glass changes.
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Glaucoma
Raised eye pressure slowly damages the optic nerve — often silent until vision is lost.
Watch for: Gradual loss of side vision; sometimes eye pain and halos (acute type).
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Diabetic Retinopathy
High blood sugar damages the tiny retinal blood vessels, threatening sight.
Watch for: Floaters, dark spots, fluctuating or sudden vision loss. Needs regular checks.
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Conjunctivitis
Inflammation of the eye’s outer membrane from infection or allergy ("pink eye").
Watch for: Redness, discharge, itching, watering. Often contagious — wash hands often.
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Amblyopia / Squint
A misaligned or "lazy" eye where the brain favours one eye, common in children.
Watch for: Eye turning in/out, poor depth perception, best treated early in childhood.
Daily Care
Eye Exercises You Can Do Anywhere
These are the same guided exercises built into the BlinkBlink desktop & Android apps — with animated demos and step-by-step timing.
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Complete Blinking
Slow, full blinks to spread the tear film and refresh the surface.
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20-20-20 Rule
Every 20 min look 20 feet away for 20 seconds to relax focus.
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Eye Rolling
Gentle clockwise & anticlockwise rolls to loosen eye muscles.
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Horizontal Movement
Look far left and far right without moving the head.
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Vertical Movement
Slowly look up and down to stretch the muscles.
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Palming
Cover closed eyes with warm palms to relax and rest.
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Focus Shifting
Alternate focus between a near thumb and a far object.
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Figure-8 Tracing
Trace an imaginary figure-8 to improve control & flexibility.
Your Questions
Frequently Asked Questions
Straight answers to the questions patients ask us most about eye health and screen use.
Does looking at screens damage my eyes permanently?
Screens do not cause permanent damage in most people, but they reduce blinking and cause digital eye strain — tiredness, dryness and headaches. Following the 20-20-20 rule and blinking consciously prevents these symptoms.
How often should I get my eyes checked?
Adults should have a comprehensive eye exam every 1–2 years, and yearly if you have diabetes, high eye pressure, high spectacle power, or are above 40. Children should be screened before school and whenever symptoms appear.
Why do my eyes feel dry and gritty at work?
Air conditioning, fans and long screen focus reduce your blink rate, so the tear film evaporates. Blink fully and often, take breaks, stay hydrated, and use lubricating drops if advised by your doctor.
Can eye exercises improve my eyesight?
Exercises will not remove the need for glasses, but they relax the focusing muscles, reduce strain and fatigue, and keep the eyes comfortable during long screen sessions. BlinkBlink guides you through them automatically.
When should I see a doctor urgently?
Seek immediate care for sudden vision loss, flashes of light with floaters, severe eye pain, redness with halos around lights, or an eye injury. These can signal serious conditions like retinal detachment or acute glaucoma.
Is the BlinkBlink app a replacement for an eye doctor?
No. BlinkBlink helps you build healthy screen habits and reminds you to rest your eyes, but it does not diagnose disease. Use the "Consult a Doctor" section to reach a registered ophthalmologist.
Still Have an Eye Concern?
Consult a registered ophthalmologist directly — select your city and post your question in seconds.
👁️🗨️ Consult a Doctor →