» Why Is the Cornea Important?

The cornea plays a major role in:

• Focusing light into the eye

• Providing clear, sharp vision

• Protecting internal eye structures

When the cornea becomes irregular, vision becomes distorted and unclear.

» Causes of Keratoconus

The exact cause of keratoconus is not always known, but several factors increase the risk:

• Genetic predisposition (family history)

• Excessive eye rubbing

• Allergic eye diseases

• Weak corneal tissue structure

• Associated systemic conditions

Keratoconus is not caused by infection and is usually not related to lifestyle habits.

» Common Symptoms of Keratoconus

Symptoms often start mild and gradually worsen:

• Blurred or distorted vision

• Frequent change in spectacle power

• Increased sensitivity to light and glare

• Difficulty seeing clearly at night

• Ghost images or multiple images

• Eye strain and headaches

⚠️ Symptoms may differ between both eyes.

» Stages of Keratoconus

‣ Early Keratoconus

• Mild corneal thinning

• Slight vision distortion

• Glasses may still provide acceptable vision

‣ Moderate Keratoconus

• Increased corneal bulging

• Irregular astigmatism

• Vision worsens despite glasses

‣ Advanced Keratoconus

• Significant corneal thinning

• Severe visual distortion

• Scarring of the cornea may occur

Early diagnosis helps slow progression and preserve vision.

» How Is Keratoconus Diagnosed?

Diagnosis is done through:

• Detailed eye examination

• Corneal topography (mapping corneal shape)

• Corneal thickness measurement (pachymetry)

These tests help detect keratoconus even in its early stages.

» Keratoconus Treatment – Overview

Treatment depends on the stage and progression of the disease.
The goal is to improve vision and stop further worsening.

1. Glasses or Contact Lenses

• Used in early stages

• Special contact lenses may provide better vision than glasses

2. Corneal Collagen Cross-Linking (C3R / CXL)

• Helps strengthen the cornea

• Slows or stops disease progression

• Most effective when done early

3. Advanced Contact Lens Options

• Rigid gas permeable (RGP) lenses

• Hybrid or scleral lenses

• Provide better visual quality in moderate disease

4. Surgical Options (Advanced Cases)

• Considered when vision cannot be corrected with lenses

• Aimed at restoring corneal structure and vision

👉 Early treatment can delay or prevent the need for surgery.

» What Happens If Keratoconus Is Left Untreated?

• Progressive worsening of vision

• Increasing difficulty with daily activities

• Corneal scarring

• Possible need for surgical intervention

Early detection plays a key role in preserving long-term vision.

» Who Should Get Screened?

• Teenagers and young adults

• People with frequent spectacle number changes

• Patients with high astigmatism

• Individuals with family history of keratoconus

• Patients with chronic eye rubbing or allergies

Regular eye check-ups are strongly recommended.