Corneal Pachymetry

Aetna covers corneal pachymetry for conditions such as anatomical narrow angles, bullous keratopathy, corneal edema, and pre-/post‑operative evaluation for penetrating keratoplasty (and for corneal refractive surgery only when the member’s plan does not exclude refractive surgery), but considers it of no proven value pre‑cataract unless corneal disease is documented and deems it experimental/investigational for many uses (e.g., screening asymptomatic glaucoma, Marfan, Terrien’s, granular stromal dystrophy, keratoconus, nodular episcleritis, pterygium management, pseudo‑exfoliation, and hydroxychloroquine monitoring). Key limits: repeat ultrasound pachymetry for corneal disease/injury is not medically necessary more often than every 6 months, and evaluation of complications of corneal refractive surgery is limited to a single occurrence.

"Fuchs' endothelial dystrophy"