[Code of Federal Regulations] [Title 21, Volume 8] [Revised as of April 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR882.1790] [Page 416] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 882--NEUROLOGICAL DEVICES--Table of Contents Subpart B--Neurological Diagnostic Devices Sec. 882.1790 Ocular plethysmograph. (a) Identification. An ocular plethysmograph is a device used to measure or detect volume changes in the eye produced by pulsations of the artery, to diagnose carotid artery occlusive disease (restrictions on blood flow in the carotid artery). (b) Classification. Class III (premarket approval). (c) Date PMA or notice of completion of a PDP is required. No effective date has been established of the requirement for premarket approval. See Sec. 882.3. [44 FR 51730-51778, Sept. 4, 1979, as amended at 52 FR 17739, May 11, 1987]