[Incurable keratitis and chronic palmoplantar hyperkeratosis with hypertyrosinemia. Cure using a tyrosine-restricted diet. Type II tyrosinemia].

One should henceforth systematically search for hypertyrosinemia which, too often, goes unrecognized for years, in patients presenting chronic keratitis associated with palmar and plantar hyperkeratosis. As a matter of fact, this highly crippling disease may be cured with an appropriate diet and the diagnosis, once suspected, is easily confirmed by simple investigations.