What is keratoconus?
In keratoconus, the cornea becomes thinner and starts to bulge to form a cone shape. Changes in corneal curvature progress and cause gradual deterioration of vision unless suitable treatment is applied.
The patient usually complains of deteriorated visual acuity, image blurring or glare around sources of light. This condition is often the reason of failure by the ophthalmologist or optometrist to correct the patient’s refractive error with glasses; it is extended diagnostic investigation (corneal topography) that makes it possible to ultimately diagnose the problem.