Spontaneous posterior dislocation of the cataractous lens in a patient with Parkinson-plus syndrome.

Purpose: To report a case of unilateral posterior dislocation of the cataractous lens and subluxation of the lens in the fellow eye of a patient with Parkinson-plus syndrome.

Observations: A 67-year-old-man who was a known case of Parkinson-plus syndrome on long-term dopamine agonists and anti-psychotic medications demonstrated apraxia of lid opening associated with moderate-to-severe blepharospasm. He had unilateral posterior dislocation of the cataractous lens and subluxation of the lens in the fellow eye with no prior history of trauma or other known ocular risk factors.