21 CFR § 886.1930 - Tonometer and accessories.

---
identifier: "/us/cfr/t21/s886.1930"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 886.1930 - Tonometer and accessories."
title_number: 21
title_name: "Food and Drugs"
section_number: "886.1930"
section_name: "Tonometer and accessories."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "H"
subchapter_name: "MEDICAL DEVICES"
part_number: "886"
part_name: "OPHTHALMIC DEVICES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 351, 360, 360c, 360e, 360j, 360 371."
regulatory_source: "52 FR 33355, Sept. 2, 1987, unless otherwise noted."
cfr_part: "886"
---


# 886.1930 Tonometer and accessories.

(a) *Identification.* A tonometer and accessories is a manual device intended to measure intraocular pressure by applying a known force on the globe of the eye and measuring the amount of indentation produced (Schiotz type) or to measure intraocular tension by applanation (applying a small flat disk to the cornea). Accessories for the device may include a tonometer calibrator or a tonograph recording system. The device is intended for use in the diagnosis of glaucoma.

(b) *Classification.* Class II.