Sclerochoroidal Calcification With Optic Nerve Calcification in a Patient With Primary Hyperparathyroidism and Severe Vision Loss

Abstract

Background/Purpose: To present a case of sclerochoroidal calcification (SCC) associated with dural calcification along the optic nerves and severe visual loss.Methods: Case report.Results: A 74-year-old white female patient with a 25-year history of primary hyperparathyroidism and surgical removal of a single parathyroid gland presented with blurred vision. On presentation, she had a calcium level of 12.6 mg/dL (reference range: 8.7-10.3 mg/dL). Her best-corrected visual acuity (BCVA) was 20/40 in both eyes, and she was diagnosed with bilateral SCC. After 2 years, the patient returned with a complaint of progressive vision loss, and the BCVA was 20/150 in the right eye and hand motion in the left eye. She had stable focal SCC on fundus examination with no significant changes from the previous examination. The fluorescein angiogram was unremarkable with no leakage. Optical coherence tomography (OCT) of the macula showed no edema or subretinal fluid and was not significantly changed from the first OCT. B-scan showed areas of calcification in the sclera consistent with the SCC. Computerized tomography (CT) scans showed dural calcifications along both optic nerves. She had no enlargement of SCC lesions and no other ocular or neurologic pathology associated with her vision loss. Conclusion:We present a patient with bilateral SCC and associated calcification in both globes. Unlike previous reports of SCC, our case demonstrated progressive severe vision loss because of dural calcification along the optic nerves. Patients with SCC and decreased vision should receive a CT scan to look for this rare associated finding.