It is a rare condition in childhood, but if not diagnosed and treated early, it can lead to blindness in the child. In 75% of cases it occurs in both eyes. It can appear from birth (congenital) or later (developmental). If it appears in the first 2 years of life, it is manifested by an increase in the size of the bulb (buphthalmos), lacrimation, clouding of the cornea. There may be a hereditary history, accompanying syndromes or systemic diseases.