Lens dislocation may be partial or complete, and may be hereditary or result from trauma. It may be complicated by cataract formation.
Vision is blurred if the lens is dislocated out of the line of vision.
If dislocation is partial and the lens is clear, visual prognosis is good. Traumatic lens dislocation can follow a blow to the eye. If the dislocation is partial, the eye may be asymptomatic, but if the lens has become totally detached and is floating in the vitreous, there is blurred vision. A quivering iris may be a symptom of lens dislocation, due to the lack of lens attachment and support. Iritis and glaucoma are common complications.