What to know about: Ocular Reprocessing

Nearly everyone agrees that proper cleaning and sterilization of any kind of surgical instrument is vital within a surgical setting to ensure the best patient outcomes. However, it’s easier said than done when the instruments get more complex, and guidelines also become longer and require more from departments.

Ocular devices are an example of devices ramping up the difficulty setting. Departments must be prepared to have a detailed discussion on how to reprocess these devices correctly to reduce potential infections and promise patients a risk-free surgical experience.

There are many reasons why ophthalmic devices are tricky to clean, but here are three questions to answer first, to understand the scope of difficulty:

  1. What are the potential consequences of improper ocular instrument cleaning?
  2. How should care and cleaning instructions be modified?
  3. How do IFU inform reprocessing decisions?

 

What are the potential consequences of improper reprocessing?

Mainly associated with cataract surgeries, any ocular surgery where the anterior segment is exposed presents the risk of a Toxic Anterior Segment Syndrome (TASS) infection, an acute inflammatory response to foreign material inside the anterior chamber of the eye that can lead to severe vision impairment.

Incomplete cleaning processes that leave residual cleaning chemistries, mineral deposits from steam sterilizers, and/or powder from sterile gloves have contributed to cases of TASS outbreaks.

TASS has often been linked to the failure to follow the processing procedures recommended by the manufacturer or by guidelines such as ANSI/AAMI ST79, AORN 2010a, CDC 2003b, IAHCSMM.

For these reasons, care and cleaning instructions are often modified for ocular devices.

 

How is care & cleaning impacted?

Pre-cleaning in the OR

Flushing ophthalmic lumens should be initiated in the OR and completed in the decontamination area. When sterile water baths are used for cleaning or soaking soiled instruments in the OR, they should be separated from the sterile field and instruments still in use. When flushing is used as part of a cleaning technique, the effluent should be discharged into a sink or separate basin while minimizing splash and aerosolization, so that contaminated fluid is not spread.

Dedicated processing areas

Many guidelines recommend that ocular instruments are best processed in dedicated areas of the department solely for eye instrumentation. Ophthalmic device IFUs may, for example, restrict the use of enzymatic detergents. When residual enzymatic gets in a patient’s eye during a procedure, it can lead to blindness or other severe, negative outcomes. You may also find your ocular IFU now includes single-use brushes only, or specific water quality requirements.

Water quality

The volume and type of water for cleaning and rinsing should follow the manufacturer’s IFU. The IFU for many intraocular instrumesink liner ocularnts recommend or require critical water (sterile distilled, reverse osmosis, or deionized) for most cleaning steps and for final rinsing. Use of tap water for rinsing and for removal of detergent should be used only if in compliance with the manufacturer’s IFU for the detergent and for the equipment. Because tap water can contain heat-stable endotoxins from gram-negative bacteria found in a municipal water supply, critical water is recommended for the final instrument rinse.

Enzymatic detergents

Cleaning with enzymatic detergent may be warranted in certain situations. If enzyme detergents are used for any reason, instructions for proper dilution and disposal of cleaning solutions should be followed. The cleaning solution should be mixed with measured amounts of water according to the detergent’s IFU. The instruments should be thoroughly rinsed to ensure removal of all cleaning agents as well as all debris loosened during the cleaning process.

Ultrasonic systems

Ultrasonic cleaning poses another risk of TASS infection, according to the TASS Task Force surveys. If an ultrasonic cleaner is used, the technician should remove all visible soil before placing instruments in the ultrasonic cleaner.

 

How do IFU’s inform reprocessing decisions?

In years past as a result of IFU, ocular devices were required to have their own dedicated ultrasonic cleaners. Many are now discussing the potential for two dedicated ultrasonic systems. One dedicated for static soaking and ultrasonic cleaning, while the second for providing critical water for ultrasonic rinsing.

Ocular reprocessing IFU may also soon include a restriction to singe-use brushes for cleaning. Inventory that is a mix of single-use and multiple-use brushes  would need to be separated, so single-use items are not accidently reprocessed or re-used.

These potential changes to IFU demonstrate why regular review of guidelines and IFU is crucial to maintaining compliance. Changes can be implemented and easily slip by. It may also be recommended to partner with other departments who reprocess similar specialties, and rely on each other for updates, news, and changes to guidelines and IFU.

Understanding potential consequences, completing step-by-step cleaning according to guidelines, and making a continuous effort to review IFU and guidelines will lead to a cleaner and safer surgical experience for both patients and reprocessing staff. Even the trickiest surgical specialties won’t present a challenge.

 

Pure Processing provides a portfolio of solutions for departments responsible for ophthalmic reprocessing. Contact us to see how we can help create automated flushing systems, dedicated reprocessing areas, and enhance your compliance and efficiency.

Sources Cited

https://www.aao.org/clinical-statement/guidelines-cleaning-sterilization-intraocular

https://www.hpnonline.com/continuing-education/article/21210366/eye-spy-changes-in-ophthalmic-reprocessing

https://apicmt.org/images/meeting/041119/best_practices_for_processing_ophthalmic_instruments_2019.pdf