Abstract
Optical coherence tomography (OCT) is a commonly used imaging modality in the evaluation of glaucomatous damage. Spectral-domain OCT allows for unprecedented simultaneous ultrahigh-speed, ultrahigh-resolution ophthalmic imaging. The higher resolution, currently at 5–7 μm commercially, can provide images of subtle abnormalities or progression currently not visible with time-domain-OCT and would potentially allow improved segmentation and greater accuracy in measurements of retinal layers. A review of the evidence to date suggests that the retinal nerve fiber layer remains the dominant parameter for early diagnosis of glaucoma and the detection of its progression.
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