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Diabetic Retinopathy

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6 Diagnosis Ultrasonography Î If used appropriately, ultrasonography ancillary to the clinical examination may enhance patient care. (III, In, D) Î Ultrasonography is an extremely valuable diagnostic tool that enables assessment of the status of the retina in the presence of a vitreous hemorrhage or other media opacity. (III, G, S) Optical Coherence Tomography (OCT) Î If used appropriately, OCT ancillary to the clinical examination may enhance patient care. (III, In, D) Î OCT is a helpful screening tool to detect subtle edema and to follow the course of edema after treatment. (III, G, D) Table 4. Use of Optical Coherence Tomography for Diabetic Retinopathy Situation Usually Occasionally Never To evaluate unexplained visual acuity loss • To identify areas of vitreomacular traction • To evaluate patients with difficult and/ or questionable examinations for diabetic macular edema • To investigate other causes of macular swelling • To screen a patient with no or minimal diabetic retinopathy •

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