What Is Keratoconus and How Is It Treated?
Written and medically reviewed per our medical review policy · Last reviewed August 20, 2026
Keratoconus is a condition of the cornea — the clear window at the front of the eye. Instead of holding its normal dome shape, the cornea gradually thins and bulges forward into a cone. That change in shape is what distorts your vision.
Symptoms of Keratoconus
What does keratoconus actually feel like? The most common signs are:
- Gradual loss of vision
- Increased light sensitivity
- Halos around lights
- Frequent changes to your glasses prescription
- Difficulty with night vision
Causes of Keratoconus
Why does it happen? The honest answer is that we don't fully know yet. Genetics play a role, and environmental factors seem to contribute as well.
Treatment Options
The right treatment depends on one thing: how far the cone has progressed.
1. Early Stages
Caught early, keratoconus is usually manageable with prescription glasses or soft contact lenses.
2. Advanced Stages
As the condition progresses, you may need:
- Rigid gas-permeable (RGP) contact lenses
- Corneal collagen cross-linking (CXL)
- Intracorneal ring segments (ICRS)
- Corneal transplant in severe cases
Important Tips
In our Cairo clinic, the habit we warn every keratoconus patient about first is eye rubbing. To protect your eyes and slow the progression:
- Avoid rubbing your eyes
- Schedule regular eye exams
- Wear UV-blocking sunglasses
- Maintain a balanced, vitamin-rich diet
One last thing. If any of the symptoms above sound familiar, don't wait — see a cornea specialist for a proper diagnostic workup and a treatment plan built around your eyes.
Is this how you see the world?
Keratoconus symptoms as you actually see them
Drag the divider to compare healthy vision with what a keratoconus patient sees. If the image looks like what you experience, it's time for a specialist diagnostic exam.
Driving at night
Starbursts and halos around oncoming headlights — the earliest and hardest KC symptom
Read this text clearly
A healthy cornea is the key to clear vision
Read this text clearly
A healthy cornea is the key to clear vision
Reading
Ghosting and double letters — as if every word is printed on top of itself
Eye chart
Wavy, distorted letters — won't sharpen with regular glasses alone
Early diagnosis halts corneal progression in 95% of cases
Have a related case?
Send your topography, OCT, or symptoms to Dr. Shaarawy. We respond in English within 24 hours.