Disease of the cornea
    
    If an accident destroys the cornea-covering cells, natural protection against 
    infections is no longer assured. Bacteria or viruses can enter the corneal 
    tissue and, as a result, a herpes infection (picture 1) can occur. If these 
    germs even pass the first covering layer and the border membrane of the cornea, 
    an ulcer that breaks into the inner of the eye and leads to a dangerous eye 
    disease can develop. If such an ulcer (picture 2) develops rapidly, clinical 
    treatment must be sought as soon as possible, since any further development 
    of the disease will cause a severe haze on the cornea. This can cause scar 
    formation which reduces visual acuity. Such scars can be eradicated with the 
    help of an excimer-laser.