Canthaxanthin Crystalline Retinopathy
A patient with a history of progressive blurry vision in her left eye for 2 years prior to her presentation. She has no significant past medical except for consuming an over the counter oral tanning pills for a period of 7 years that was stopped 2 years prior to her presentation. Her exam was notable for a visual acuity of 20/20 in her right eye and 20/30 in the left eye. Anterior segment exam shows no abnormalities. Posterior segment exam shows scant intraretinal crystals in her right eye and a striking brilliant golden-yellow crystal deposition in a donut-shaped configuration around the center of the macula in her left eye. SD-OCT shows the deposition of crystals involving all retinal layers. Four years after her initial presentation, the patient continues to refrain from using the oral tanning agent and her visual acuity recovers back to 20/20 in the left eye. Posterior segment exam along with fundus and SD-OCT imaging shows partial resolution of the crystals more so in the left eye than the right, leaving a small area of PED and intraretinal cystic changes as evident in the SD-OCT image in her left eye which may signify a permanent damage from the crystalline retinopathy.
Uploaded on: 09/28/2021