Eye conditions are so varied that it can be hard to keep up with all the things that could go wrong with our vision care, and that is why regular exams are advisable. Keratoconus is one condition that an eye surgeon can treat before it progresses further.
The eye disease causes thinning of the naturally round-shaped cornea into a cone-like bulge. A cornea with such a shape leads to distorted vision because light deflects when it hits the sides of the cornea. The condition is progressive with the shape of the cornea getting more irregular, resulting in astigmatism and near-sightedness.
It is not clear what causes the condition, but some genetic predispositions such as asthma have shown susceptibility to keratoconus.
http://eyecliniclondon.com/2016/08/17/eye-doctor-offers-treatment-keratoconus-contact-lenses/
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