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Combination of the curvatures of the front and rear surfaces of a lens, measured in diopters.

Optical coherence tomography (OCT) is a noninvasive imaging technology used to obtain high resolution cross-sectional images of the retina. OCT is similar to ultrasound testing, except that imaging is performed by measuring light rather than sound. OCT measures the retinal nerve fiber layer thickness in glaucoma and other diseases of the optic nerve.

Physician, surgeon specialized in the treatment of eye diseases, conditions and eyesight correction. Physician (MD) specializing in diagnosis and treatment of refractive, medical and surgical problems related to eye.