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.