Treatment includes the use of protective eye glasses. A number of surgical options are also available. Further progression of the disease usually leads to a need for corneal transplantation because of extreme thinning of the cornea. Primarily, large size penetrating keratoplasty has been advocated. Recent additions of techniques specifically for<unk>  include the "tuck procedure", whereby a 12 mm corneo-scleral donor graft is taken and trimmed at its outer edges. A host pocket is formed at the limbal margin and the donor tissue is "tucked" into the host pocket.
Keratoglobus
Arbor vitae 
Phadebas
Hemosiderinuria
Pentosuria
Parosmia
Harderoporphyria
Scurvy