Keratoconus (conical cornea) is an inherited disorder (1in 3000) and associated with allergies, eczema, asthma and usually becomes apparent between the ages of 10 - 25 years.

It starts out as astigmatism and progresses as the cornea continues to thin and bulge forward.

The shape becomes a cone and irregular to the point where spectacles don’t help the vision.

Rigid contact lenses provide good vision.

Sometimes a corneal graft is required.

Collagen cross linking is a new therapy used in early diagnosis to strengthen the cornea.