CPT® Code 76514

Ophthalmic ultrasound, specifically for corneal pachymetry, is a diagnostic procedure that measures the thickness of the cornea, which is the transparent front part of the eye. This procedure can be performed on one eye (unilateral) or both eyes (bilateral). The technique is non-invasive and involves the use of an ultrasound probe that is placed directly onto the anesthetized central cornea. The ultrasound generates an ultra-high definition echogram, known as a corneal A-scan, which provides precise measurements of corneal thickness in micrometers. This method allows for the visualization of the corneal waveform, enabling healthcare professionals to superimpose multiple echograms to track changes in corneal thickness over time. Corneal pachymetry is particularly useful in diagnosing conditions such as bullous keratopathy and corneal edema, as well as in assessing the risk of glaucoma. Additionally, it plays a critical role in monitoring patients with Fuchs' endothelial dystrophy or posterior polymorphous dystrophy. The procedure is also valuable in evaluating patients before and after corneal refractive surgery, as well as in determining the rejection status following penetrating keratoplasty.