Temporal Pallor of Optic Disc: Causes and Management

Primary Causes

Giant Cell Arteritis (GCA) is the most common non-embolic vascular cause in patients over 50, representing an ophthalmologic emergency, and causes inflammatory disease of the proximal ocular artery with vessel wall thickening and occlusion, resulting in simultaneous ischemia of inner and outer retina plus optic disc 1
GCA typically affects Caucasians over 50 with optic disc swelling, central retinal artery occlusion, and absence of emboli 2
Immediate high-dose systemic corticosteroid therapy is critical to prevent vision loss in the fellow eye, according to the American Academy of Ophthalmology 2, 1

Magnified stereoscopic visualization through dilated pupil using slit-lamp biomicroscope is the preferred technique for clinical examination, as recommended by the American Academy of Ophthalmology 3, 7, 8
Red-free illumination aids in evaluating retinal nerve fiber layer thinning, according to the American Academy of Ophthalmology 7, 6

Rule out GCA emergently in all patients over 50 with acute vision loss and disc swelling: check ESR/CRP and initiate high-dose corticosteroids immediately if suspected, as recommended by the American Academy of Ophthalmology 2, 1
Urgent stroke evaluation for retinal artery occlusions: prompt referral to stroke center given high acute stroke risk, according to the American Heart Association 2
Optimize modifiable risk factors: smoking cessation, blood pressure control, diabetes management, and lipid control, as recommended by the American Academy of Ophthalmology 2
Monitor for neovascular complications including neovascular glaucoma, according to the American Academy of Ophthalmology 2, 1