Vision Problems
Most blurred vision comes down to one of two things: how your eye focuses light, or an underlying eye health condition. Knowing which is behind your symptoms is the first step to seeing clearly again — and a comprehensive eye examination is the most reliable way to tell the two apart. Below, our optometrists explain both, and the common conditions behind each.
1. Eye Focusing issues
The most common cause of blurred vision is a refractive error — light failing to focus sharply on the retina because the eye is slightly too long, too short, or irregularly shaped. These aren't diseases, and they're highly correctable: our optometrists can pinpoint the exact type and restore clear vision with prescription glasses or contact lenses. The four most common are myopia, hyperopia, astigmatism and presbyopia.
2. EYE HEALTH CONDITIONS
The second cause is an underlying eye health condition. Cataracts, glaucoma, macular degeneration and dry eye can all blur or reduce vision — and some, if not caught early, can lead to permanent sight loss. Unlike refractive errors, these need timely detection and ongoing management, which is exactly why regular eye examinations matter.
Eye Focusing Issues
Refractive errors happen when the eye can't focus light sharply onto the retina, usually because of its length or shape. They're the most common reason for blurred vision — and the good news is they're highly correctable. Below are the four most common types of refractive error, all of which our optometrists can correct with prescription glasses or contact lenses so you can see clearly again.
Myopia
also called "short-sightedness" or "near-sightedness"
近视
Myopia, or short-sightedness, is when distant objects look blurry while close-up objects stay clear. It happens when the eye grows slightly too long, so light focuses in front of the retina rather than on it — and the longer the eyeball, the stronger the myopia. Myopia typically begins in childhood and worsens through adolescence as the eye grows.
In daily life, a short-sighted child may struggle to read the whiteboard at school, while an adult might find road signs, faces or the TV harder to make out at a distance.
Myopia is driven by both genetics and lifestyle. Having one or both parents with myopia raises the risk, as does long hours indoors and close-up work — reading too near the face, schoolwork, phones and tablets. Singapore has one of the highest childhood myopia rates in the world, which makes early detection here especially important.
It's also the most common vision problem in children and young adults, and the one with the greatest long-term risk to eye health if left unmanaged. With the right care — such as our Myopia Control Solutions — myopia progression can be slowed and managed.
Hyperopia
also called "farsightedness" or "long-sightedness"
Hyperopia, or long-sightedness, is when nearby objects look blurry while distant ones are clearer. It occurs when the eye is too short, so light focuses behind the retina. Small amounts are common in children and usually aren't a concern, as young eyes can flex to compensate — though some children get discomfort or headaches from the constant focusing effort.
A long-sighted person sees more comfortably at a distance and has to work the eyes harder to focus up close and hold that focus. Over time this strain can lead to headaches, sore eyes and tiredness.
Glasses, eye exercises or simply taking more breaks from close work can relieve the symptoms. In children, a high degree of uncorrected hyperopia — especially in just one eye — can lead to eye misalignment (strabismus) or a lazy eye (amblyopia), so it's worth checking early.
Astigmatism
sometimes also called "cylinder" or "football-shaped eye"
Astigmatism is blurred or distorted vision at any distance, caused by an unevenly curved front surface of the eye — more oval than perfectly round. It's very common: around half of all spectacle wearers have some astigmatism in their prescription.
People with astigmatism often see blur both far away and up close, sometimes described as an overlapping shadow that's tiring to look through. Left uncorrected, it commonly causes headaches and eye strain.
Astigmatism can occur on its own or alongside short- or long-sightedness. Most types and degrees correct fully with glasses or contact lenses — the contact lenses used for astigmatism are known as 'toric' lenses.
Presbyopia
the loss of focusing flexibility with age
老花眼
Presbyopia is the gradual, age-related loss of the eye's ability to focus on near objects. It's a normal part of ageing, not a disease — as we get older the lens inside the eye becomes less elastic and slower to switch focus between far and near, making reading and close-up detail harder.
You might notice yourself holding a book or phone further away to read comfortably. People who are naturally short-sighted may find close work easier with their distance glasses off, while those who are long-sighted tend to struggle most up close.
Presbyopia usually sets in around age 45, though it can be earlier or later. Reading glasses solve it simply — and if you already wear glasses for distance, multifocal or bifocal lenses can handle both near and far in a single pair.
other eye conditions
Eye Health Conditions
Not all blurred vision comes from a focusing problem. The conditions below are diseases of the eye that can blur or reduce vision — and several, if left undetected, can cause permanent sight loss. The reassuring part: many develop slowly and are highly manageable when caught early, which is exactly what a comprehensive eye examination is for.
Our optometrists are trained to detect, diagnose and manage these conditions, and to refer you to an ophthalmologist (eye specialist) for further treatment where needed. If something doesn't feel right with your vision, book an appointment — early detection makes all the difference.
Cataract
白内障
A cataract is a clouding of the eye's natural lens, which sits behind the pupil. It usually develops slowly with age, gradually making vision foggy or hazy — like looking through a misted window — and often causing glare around lights, especially at night.
Glaucoma
青光眼
Glaucoma is damage to the optic nerve, usually from a build-up of pressure inside the eye. It quietly erodes peripheral (side) vision first, and the loss is irreversible — which is why it's often called the "silent thief of sight". It tends to run in families, and a more aggressive form is more common among people of Asian descent.
Macular Degeneration
黄斑病变
Age-related macular degeneration (AMD) is a progressive disease of the macula — the central part of the retina responsible for sharp, detailed vision. It causes painless, permanent loss or distortion of central vision, which in advanced cases makes driving, reading and recognising faces difficult.
Diabetic Retinopathy
糖尿病性视网膜病变
Diabetic retinopathy is damage to the retina's blood vessels caused by diabetes. It can lead to leaking vessels, bleeding and vision loss, often with no early symptoms. A routine eye examination can sometimes detect signs of diabetes before a person even knows they have it.
Floaters
飞蚊症
Floaters are small clumps within the vitreous — the gel that fills the back of the eye — that cast shadows you see as dots, strands or cobwebs drifting across your vision. Most are harmless, but a sudden shower of new floaters, especially with flashes of light, needs urgent attention, as it can signal a retinal tear.
Retinal Lesions
视网膜病变
Retinal lesions are areas of damage to the retina that can permanently threaten vision. The most serious is retinal detachment, where the retina peels away from the back of the eye — a medical emergency. People who are highly short-sighted, or who have had an eye injury, are at greater risk.
Eye Infection
眼部感染
Eye infections, including conjunctivitis ("pink eye"), are common — especially in children — and bacterial forms can be highly contagious. Contact lens wearers are at higher risk. Our optometrists can identify the type of infection, advise the right treatment, and refer you on if needed.
Dry Eye
干眼症
Dry eye is a common, often chronic condition where the eyes aren't kept properly lubricated. It can cause vision that blurs and clears, along with irritation, redness, stinging or burning, grittiness and — counter-intuitively — watery eyes. It can affect any age, and screens and air-conditioning often make it worse.
Pterygium
翼状胬肉
A pterygium is a benign, slow-growing fleshy tissue that creeps from the white of the eye onto the cornea. In advanced cases it can distort vision. It's common in Singapore, where strong sun and UV exposure are key risk factors — good sunglasses help prevent it.
Most eye conditions are far easier to manage when caught early, before they progress to permanent damage. Our optometrists are fully qualified to examine, diagnose and manage the conditions above, and to coordinate specialist referral when it's needed. Book an eye examination to put your eye health in good hands.