Closed Angle Glaucoma


Glaucoma is an ocular pathology that can determine a serious damage to the optic nerve and can evolve up to the full loss of vision. This disease is caused by a pathological increase in the intraocular pressure (Intraocular Pressure, IOP), due to an increase in the production of the quantity of aqueous humor present in the anterior chamber of the eye or a difficulty of its outflow. The aqueous humor is a transparent liquid that has the function of nourishing   the cornea and the lens and to drain out all the waste products. In a healthy eye, it is produced continuously inside the anterior chamber by the cells of the non pigmented epithelium of the ciliary body, and is constantly drained – at the same speed at which it is produced – through an ocular structure called corneo-scleral trabecular meshwork and by other anatomical structures. Thanks to a correct functioning of this physiological mechanism, the IOP maintains in a healthy eye rather constant values comprised between 14 and 21 mmHg.


The therapy that must be urgently practiced is laser Iridotomy, a parasurgical intervention that is executed in order to prevent or handle an acute glaucoma attack. Laser Iridotomy must be timely executed in those patients in which a closed angle glaucoma has occurred and it is strongly recommended also to individuals presenting risk factors for this disease (inheritance, high hypermetropia or cataract with intumescent lens), since prevention and timely treatment are essential for the purpose of avoiding the loss of vision that can occur as direct consequence of an acute glaucoma attack.

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