The acute primary angle closure is an ophthalmological urgency which requires immediate treatment to prevent permanent damaged.The population studies reveal that more than a half of predispose individuals will not manifest the disease. This reality, the cost of laser prophylactic treatment, the risk of ocular complications and the low accessibility to the technology in some populations justify that proper investigations go on to define the morphological and/or functional factors that determine the acute presentation of the disease [1].The optical coherence tomography is a high resolution, non invasive technology that offers the possibility to