CFR › Title 21 › Part 886 › §886.437021 CFR §886.4370Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A keratome is an AC-powered or battery-powered device intended to shave tissue from sections of the cornea for a lamellar (partial thickness) transplant.(b)Classification. Class I.