Lens shift
Under normal circumstances, the lens is suspended from the ciliary body by the lens ligament, and its center is almost consistent with the visual axis. Due to congenital, trauma, or disease, the lenticular ligament is partially or completely missing or broken, causing the imbalance or loss of the suspending force on the lens, which can cause the lens to leave the normal physiological position.It is called ectopia lentis. The degree of partial or complete ligament defect or detachment is divided into subluxation and luxation / dislocation. According to the cause of lens ectopic, it is divided into congenital, spontaneous and traumatic.
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