Mechanical machine washing, with the exception of the open style tunnel washer, is suitable for almost all ophthalmic instruments, except Diamond Knives (see Diamond Knives). Devices with long, narrow cannula, hinges, blind holes and lumens require particular attention during cleaning. Use only CE marked or validated washer disinfector machines and low foaming, non-ionising cleaning agents and detergents following the manufacturers instructions for use, warnings, concentrations and recommended cycles.
A neutral detergent is preferred with a pH of 7 to 8. The washer disinfector should comply with HTM 2030 and the final rinse should be of reverse osmosis (RO) quality water. Instruments should be secured in recommended John Weiss Ophthalmic Trays with silicone matting to prevent movement. When drying is achieved as part of a washer disinfector cycle, do not exceed 120oC. Always use appropriate attachments to flush inside reamers and devices with lumens or cannulae.
