Section 886.1940 - Tonometer sterilizer(a)Identification. A tonometer sterilizer is an AC-powered device intended to heat sterilize a tonometer (a device used to measure intraocular pressure).(b)Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 886.9 .55 FR 48443, Nov. 20, 1990, as amended at 65 FR 2321 , Jan. 14, 2000