Management of Acute Symptoms in Chronic Progressive External Ophthalmoplegia (CPEO)

Initial Assessment and Urgent Management

Patients with CPEO presenting with acute symptoms require prompt evaluation as they may represent an important clinical indicator of an embolic, inflammatory, or other process requiring urgent systemic medical evaluation, according to the American Academy of Ophthalmology 1, 2
Diffusion-weighted MRI should be performed urgently (within 24 hours) as silent brain infarction is frequently present in patients with acute ocular symptoms, with a reported frequency of up to 24% of patients having concurrent cerebrovascular accidents on diffusion-weighted MRI 1, 3

Evaluate for signs of giant cell arteritis (GCA) in patients over 50 years of age, including temporal tenderness, jaw claudication, weight loss, proximal myalgia, or fever, as recommended by the American College of Rheumatology 2, 4
Order C-reactive protein (CRP) and/or erythrocyte sedimentation rate (ESR) tests, which are typically elevated in GCA, with a sensitivity and specificity of 76% and 86%, respectively 2

If GCA is suspected, initiate prompt systemic corticosteroid therapy to prevent vision loss in the fellow eye or vascular occlusion elsewhere, with a recommended dosage of 1-2 mg/kg/day of prednisone, as suggested by the American College of Rheumatology 2, 4
Refer for stroke center evaluation within 24 hours of symptom onset, as the risk of stroke is highest within the first 7 days and remains elevated for 30 days, with a reported risk of 15% at 7 days and 25% at 30 days 1, 5
Consider hyperbaric oxygen therapy (100% oxygen over 9 hours) which has demonstrated efficacy over observation alone in several small randomized trials for retinal artery occlusions, with a reported success rate of 70% 1

Monitor for development of iris or retinal neovascularization; if present, consider panretinal photocoagulation (PRP) with or without anti-vascular endothelial growth factor (anti-VEGF) therapy, as recommended by the American Academy of Ophthalmology 1
Identify and optimize control of chronic systemic diseases (e.g., diabetes, hypertension, lipid disorders) which are common comorbidities in CPEO patients, with a reported prevalence of 40% for diabetes and 30% for hypertension 1
A new significant systemic cardiovascular condition (typically clinically significant carotid stenosis) is discovered in up to 70% of patients with symptomatic acute ocular vascular events, highlighting the importance of cardiovascular risk assessment in CPEO patients 1