What Are Common Eye Conditions?

Many people only think about visiting an optometrist when their vision becomes blurry. However, many eye conditions develop gradually and may not cause noticeable symptoms in their early stages. Regular eye examinations play an important role in detecting these problems before they begin affecting your vision or overall eye health.

At Eyesight.sg, we often meet patients who are surprised to learn that their symptoms, such as headaches, eye strain, or dry eyes, are linked to common eye conditions that can often be managed effectively when detected early.

Here are some of the most common eye conditions we see.

1. Refractive Errors

Refractive errors are the most common cause of blurred vision worldwide. They occur when the eye cannot focus light properly onto the retina.

The main types include:

• Myopia (short-sightedness): Distant objects appear blurry while close objects remain clear.
• Hyperopia (long-sightedness): Nearby objects may appear blurry, although some people experience difficulty with both near and distance vision.
• Astigmatism: An irregularly shaped cornea or lens causes blurred or distorted vision at all distances.
• Presbyopia: An age-related condition that makes it difficult to focus on nearby objects, usually developing after the age of 40.

These conditions are typically corrected with spectacles, contact lenses, or, in some cases, refractive surgery.

2. Dry Eye Disease

Dry eye is becoming increasingly common, especially among people who spend long hours using computers, smartphones, or working in air-conditioned environments.

Symptoms may include:

• Burning or stinging eyes
• Grittiness and redness
• Blurred vision that improves after blinking
• Excessive watering

Although it may seem unusual, watery eyes can actually be a sign of dry eye, as the eyes produce reflex tears in response to irritation. Treatment may involve lubricating eye drops, lifestyle adjustments, or specialised dry eye therapies depending on the underlying cause.

3. Cataracts

A cataract occurs when the natural lens inside the eye becomes cloudy over time.

Common symptoms include:

• Blurred or hazy vision
• Difficulty driving at night
• Increased sensitivity to glare
• Colours appearing dull or faded
• Frequent prescription changes

Cataracts develop gradually with age and are one of the leading causes of vision impairment. Fortunately, cataract surgery is a safe and effective treatment that restores clear vision for many people.

4. Glaucoma

Glaucoma is often called the "silent thief of sight" because it can damage the optic nerve without causing noticeable symptoms in its early stages.

Risk factors include:

• Increasing age
• Family history of glaucoma
• High eye pressure
• Diabetes
• High myopia

Without treatment, glaucoma can lead to permanent vision loss. Regular comprehensive eye examinations are essential because early detection allows treatment to slow or prevent further damage.

5. Age-Related Macular Degeneration (AMD)

AMD affects the macula, the central part of the retina responsible for detailed vision. People with AMD may notice:

• Difficulty reading
• Distorted straight lines
• Blurred central vision
• Difficulty recognising faces

AMD mainly affects older adults and is one of the leading causes of vision loss in people over 60.

6. Diabetic Eye Disease

People living with diabetes are at increased risk of developing diabetic retinopathy. High blood sugar levels can damage the tiny blood vessels in the retina, sometimes without causing symptoms until significant damage has occurred.

Regular diabetic eye examinations are crucial for detecting subtle retinal changes early and protecting long-term vision.

7. Conjunctivitis (Pink Eye)

Conjunctivitis is an inflammation of the thin membrane covering the white part of the eye. It may be caused by viruses, bacteria, allergies, or environmental irritants.

Symptoms commonly include:

• Red eyes and itching
• Watering and discharge
• Swollen eyelids

Treatment depends on the underlying cause, and not every case requires antibiotic eye drops.

8. Myopia Progression in Children

Myopia has become increasingly common among school-aged children, particularly in Singapore. As children grow, their prescription may increase rapidly, placing them at greater risk of developing serious eye conditions later in life, including retinal detachment and glaucoma.

Modern myopia management options, including specialised contact lenses and orthokeratology (Ortho-K), can help slow the progression of short-sightedness in suitable children.

9. Eye Allergies

Eye allergies occur when the eyes react to allergens such as dust mites, pollen, pet dander, or mould.

Common symptoms include:

• Itching and redness
• Watering and puffy eyelids

Unlike infections, allergies are not contagious and often affect both eyes equally.

10. Computer Vision Syndrome (Digital Eye Strain)

Many people spend eight or more hours each day looking at digital screens. This can lead to:

• Eye fatigue and blurred vision
• Dry eyes and persistent headaches
• Neck and shoulder discomfort

Simple changes such as taking regular breaks, adjusting screen height, and using appropriate prescription lenses or anti-reflective coatings can significantly reduce symptoms.

When Should You Have Your Eyes Checked?

Even if your vision seems normal, regular eye examinations are recommended because many eye conditions develop without noticeable symptoms.

You should arrange an eye examination if you experience:

• Blurred vision or sudden vision changes
• Persistent headaches
• Flashes of light or new floaters
• Eye pain, double vision, or redness that does not improve

Early diagnosis often leads to simpler treatment and better long-term outcomes.

Protect Your Eye Health with Regular Eye Examinations

Many common eye conditions can be treated or managed successfully when detected early. Routine eye examinations do more than update your prescription—they help monitor your overall eye health, identify developing conditions, and support clear, comfortable vision throughout every stage of life.

At Eyesight.sg, our comprehensive eye examinations are designed to assess both your vision and eye health using modern diagnostic technology and personalised care. Whether you need a routine eye test, myopia management for your child, or advice about changes in your vision, our experienced team is here to help.

Book your eye examination with Eyesight.sg today and take an important step towards protecting your sight.

Frequently Asked Questions

Q: What is the most common eye condition?

A: Refractive errors, including myopia, hyperopia, astigmatism, and presbyopia, are the most common eye conditions worldwide.

Q: Can eye diseases develop without symptoms?

A: Yes. Conditions such as glaucoma and diabetic retinopathy often develop silently before affecting vision.

Q: How often should adults have an eye examination?

A: Most adults should have a routine eye examination every one to two years, although your optometrist may recommend more frequent reviews based on your age, eye health, and medical history.

Q: Are dry eyes permanent?

A: Dry eye disease is often a long-term condition, but symptoms can usually be managed successfully with appropriate treatment and lifestyle adjustments.

Q: Can children develop serious eye conditions?

A: Yes. Children can develop refractive errors, myopia progression, amblyopia (lazy eye), and other eye conditions. Regular childhood eye tests are important for healthy visual development.