Lagophthalmos is rated by the U.S. Department of Veterans Affairs under DC 6022 of 38 CFR § 4.79, DC 6020 across 2 severity tiers (10% / 20%). Service connection requires (1) a current diagnosis, (2) an in-service event, injury, or exposure, and (3) a medical nexus opinion linking the two under 38 C.F.R. § 3.303.
Inability to fully close the eyelids, leaving the cornea partially exposed. May be caused by facial nerve (CN VII) palsy, scarring from burns or surgery, thyroid eye disease, or trauma. Results in corneal exposure, dryness, irritation, and risk of corneal ulceration.
Rating criteria text quoted verbatim from 38 C.F.R. § 4.79 (Eye). Source verified 2026-05-17 by ClaimRecon Editorial Team against the Cornell Law CFR mirror; eCFR.gov is the authoritative government source.