CFR › Title 21 › Part 886 › §886.510021 CFR §886.5100Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. An ophthalmic beta radiation source is a device intended to apply superficial radiation to benign and malignant ocular growths.(b)Classification. Class II.