It is derived from surface ectoderm, and has no innervation or blood supply of its own, deriving nourishment from the surrounding aqueous and vitreous. Any insult to the lens can create a cataract, or opacification. The zonules are unusually long and lax. Lenticonus is often associated with cataract in the area of the cone. Primary problem with these conditions is that the spectacle Rx is different depending on where light enters the eye.
Malformations are usually posterior and unilateral.
The patient may complain of monocular diplopia, triplopia, or polyopia. If symptomatic, treatment is lens extraction. The lens may sublux in any direction but stays behind the iris plane . May occur from trauma, hereditary factors, or mesodermal diseases. If the patient is dilated, there is a risk of dislocation of the lens into the anterior or posterior chamber.