A 28-year-old man presents to the ophthalmology clinic with progressive blurring of vision in both eyes over the past 6 months. He reports a history of recurrent joint dislocations and reports that his father had similar eye problems. On examination, visual acuity is 6/36 in both eyes. Slit-lamp examination reveals bilateral superior lens dislocation with the lens edge visible in the pupil. Gonioscopy shows angle-closure configuration. What is the most likely underlying diagnosis?