SUMMARY
Hydrochlorothiazide, a thiazide diuretic commonly used for the treatment of systemic arterial hypertension, may induce hypokalemia, hyperglycemia, hyperuricemia and hypercalcemia.
Nowadays it is known that high seric calcium may lead to cataract formation although the association between hydrochlorothiazide and cataract is rarely described.
We are presenting a typical morphologic cataract due to hyupercalcemia in a presenile patient who used hydrochlorothiazide for 5 years and presents elevated seric calcium. After the drug withdraw all the seric calcium returned to normal levels but the tens opacities remain unchanged.