The Keratoconus is a not inflammatory disease of the cornea and approved as an independent disease since over 200 years. The word Keratoconus derives from Greek/Latin and consists of Kerato= cornea and Konos= cone. With increasing progress of the disease a cone like swell is developed. This is provoked by a firstly local thinning of the cornea. The whole cornea is distorted by this and the optical imaging is highly affected, depending on the stage of the Keratoconus. Generally the development of the Keratoconus is slow and can stop in every stage. If it is progressing the cornea gets even thinner and therefore also more bulged out.
First indications are blurred vision and distorted images, often initially in twilight or darkness.
Frequently a tail can be seen around light sources.
In the beginnings the vision mostly can be improved by glasses. Specific is a fast worsening of the sight though, particularly on one eye. Not later than that it is time for the correction with contact lenses.