A 34-year-old male presents to the emergency department following a motor vehicle accident in which he struck a light post at low speed. He was belted and the airbag was activated. There was no loss of consciousness or significant systemic injuries, however he complains of decreased vision and monocular diplopia in the right eye. His past medical and ocular history is otherwise unremarkable.

The patient says the symptoms started soon after the incident, and he feels that the airbag impact was maximal over his right eye. On exam, visual acuity is 20/100 and 20/20 in the right and left eyes, respectively. Posterior segment exam is shown below:

Ectopia lentis is a partial or complete displacement of the crystalline lens from its central position in the pupil, caused by broken or weakened zonules.¹ It is most commonly caused by trauma, although it is also associated with many systemic conditions, including most commonly Marfan syndrome.² Nontraumatic ectopia lentis occurs at an estimated prevalence of 6.4 per 100 000 and affects both males and females at an equal rate.³