Acute angle-closure glaucoma is an ocular disorder essentially linked to specific anatomical formations, particularly hereditary, in which, as of a critical age and influenced by random triggering factors, unilateral or bilateral blockage of the pupil occurs. This leads to closing of the iridocorneal angle followed by severe ocular hypertonia and, if emergency treatment is not begun, to severe complications of the eye and the vision. Treatment is first by osmotic agents (acetazolamide), beta-blocking collyria and myotic agents, followed obligatorily by surgical or laser iridectomy of the affected eye, then of the other eye as a preventive measure.