Keratoglobus and keratoconus. A contribution to the nosological interpretation of keratoglobus.

" Keratoglobus, also known as megalocomea, is usually accompanied by infantile hydrophthalmos or glaucoma" (Bietti, 1925). " There is a form of ectasia of the bulb known as hydrophthalmos, megalophthalmos, or also, because the enlargement of the cornea particularly attracts our attention, as megalocornea or keratoglobus: the affection is congenital or appears shortly after birth without any apparent cause " (Fuchs, 1889). "Keratoglobus or megalocornea is a partial manifestation of megalophthalmos; usually both keratoglobus and megalophthalmos do not result from an abnormal development though still within physiological limits, but from an increase in tension which, moreover, remains latent, namely a form of hydrophthalmos that has become stationary " (Elschnig, 1923). Among more recent authors, Prelat (1939) distinguishes keratoglobus from megalocornea proper, identifying the former with buphthalmos: