![]() Lens subluxation is also observed in dogs and is characterised by partial displacement of the lens. Surgery is used to treat dogs with significant symptoms.Įarly treatment can prevent secondary glaucoma. This type causes fewer problems than anterior luxation, although glaucoma or ocular inflammation may occur. With posterior lens luxation, the crystalline lens falls back into the vitreous humour and lies on the floor of the eye. Uveitis causes constriction of the pupil (miosis) and traps the lens in the anterior chamber, causing obstruction of aqueous humour outflow and a consequent increase in eye pressure and glaucoma).Īnterior lens luxation is considered an ophthalmic emergency. This can cause glaucoma, uveitis or damage to the cornea. With anterior luxation, the lens pushes into the iris or actually enters the anterior chamber of the eye. Ectopia of the lens causes visual impairment, treatment is surgical Anterior dislocation of the lens ![]() The extreme degree of lens dislocation is called a ‘lenticel’ in which the lens protrudes from the eyeball and becomes trapped under the Tenon’s capsule or conjunctiva. ![]() The ectopic lens is therefore in a non-normal position and is referred to as ‘dislocated’.Ī partial dislocation of the lens is called a subluxation, while a complete dislocation is called a luxation. Ectopia lentis (or ‘ectopic lens’) is a particular type of ectopia in which the lens of the eye is displaced from its physiological position What is ectopia lentis? In medicine, ‘ectopic’ is used to indicate an anatomical structure that – for various reasons – finds itself in a non-normal positionįor example, a kidney or testicle are said to be ‘topical’ when they are positioned in their physiologically correct location, while they are said to be ‘ectopic’ when, due to congenital malformations or trauma, they are positioned in an abnormal location. ![]()
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