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RE: L'art du son

Posted by flood2 (A) on January 9, 2022 at 00:20:32

In Reply to: RE: L'art du son posted by ecl876 on January 5, 2022 at 11:04:22:

I don't know if you are familiar with the cleaning regimen for contact lenses and the issues associated with "one step/no rub" cleaning solutions?

Much like vinyl cleaning, the contact lens cleaning regimen requires an almost Kirmuss-like obsessiveness!

There was a similar concept with "no rub" single step contact lens cleaning solutions being marketed as a simpler alternative to the standard method of applying a sufactant solution, rubbing each side of the lens with a finger pressing the lens against the palm, rinsing off with saline and then placing the lenses into the container with the disinfectant solution. Additionally, once a month, an additional protein removal tablet needed to be dissolved in the solution to assist in the removal of protein buildup.

You can see how attractive the "no rub" single solution alternative would be! The problem was that the rubbing step is required to remove protein deposits on the lens and to compensate for the lack thereof, the solution was increased in strength. Even the hydrogen peroxide solutions were not effective without the rubbing step and use of protein removal tablets. Not only did the solutions cause problems with eye irritation in some people (myself included with certain brands), but they also resulted in a higher incidence of keratitis and the FDA issued a letter to the manufacturers advising that the use of such solutions should include instructions for rubbing based on the evidence.
By doing the traditional cleaning regimen, I was able to get well over 6 months to nearly 9 months out of my "monthly disposable" lenses without any issue of eye discomfort or protein buildup.

So, in short, just because it is marketed as a "no rinse" alternative does not mean that one isn't necessary or at least beneficial! The proof is in the stylus buildup and background noise - if this is absent, then the product recommendations are valid. Otherwise, there is nothing wrong with adding in a rinse step if someone feels it is necessary. The issue would be in the quality of the water used....
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

• https://www.fda.gov/medical-devices/contact-lenses/fda-lette   (Open in New Window)

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