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
•
