Patients with symptoms or signs of systemic disorders should have appropriate testing: Diabetes: Fingerstick or random glucose measurement Poorly controlled hypertension and acute hypertensive retinopathy (hemorrhages, exudates, or papilledema): Urinalysis, renal function testing, blood pressure monitoring, and electrocardiography (ECG) HIV / AIDS and retinal abnormalities: HIV serology and CD4+ count Systemic lupus erythematosus (SLE) and retinal abnormality: Antinuclear antibodies, erythrocyte sedimentation rate (ESR), and complete blood count (CBC) Waldenström macroglobulinemia, multiple myeloma, or sickle cell anemia: CBC with differential count and other testing (eg, serum protein electrophoresis) as clinically indicated Treatment of Blurred Vision Underlying disorders are treated.