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Medical Forum / General / Vision / October 2006RGP Enzymatic cleaner - foggy vision
Two days ago I used some of the Boston enzymatic cleaner on my lenses - two drops in each well with UniquePH solution (not Boston, but my doc said it was okay). I didn't wear them yesterday, but in the evening I pulled them from the enzyme solution, rinsed with UniquePH and put them in fresh solution. This morning I took them out, put a drop of Systane on the lens and put them in. Right away I had signifcantly foggy vision that would not go away with blinking or additional drops. The effect is similar to end of day dryness. It's better now after pulling them out and rubbing them in solution, but still not normal. Any ideas? Can the enzymatic cleaner harm lenses? -- > Two days ago I used some of the Boston enzymatic cleaner on my lenses - > two drops in each well with UniquePH solution (not Boston, but my doc [quoted text clipped - 7 lines] > > Can the enzymatic cleaner harm lenses? Doubtful. I have some theory about what might have happened. After enzyming, it is often best to clean again with a surfactant cleaner prior to applying wetting solution, or better still, re-soak in storage solution (especially for some of the higher DK and plasma-treated materials.) It is possible that 1. the residual altered proteins bound to the polyethelene glycol in the Systane and coated the lens, or 2. a chemical in the UniquePh combined with Systane and did that. If you've used Systane following soaking in UniquePH before without problems, that would indicate that it is the former theory, if not, could be either scenario. Or 3. The plasma coating was damaged by the Systane. Have you used that as a wetting drop successfully before? That can isolate that product as a potential cause. If thorough surfactant cleaning with *a separate* cleaner and soak in storage solution does not restore the lens surface, you could try Miraflow cleaner (for the added alcohol). If that doesn't work, your lens has been damaged and should be replaced. Personally, I've tried Systane with plasma treated lenses with really awful results. I'd be curious to learn of *your* findings. Note that the use of non-approved products on Menicon material lenses voids any written or implied warranty. And they stick by that---and for good reason. LB, O.D. > Doubtful. I have some theory about what might have happened. After > enzyming, it is often best to clean again with a surfactant cleaner [quoted text clipped - 28 lines] > > LB, O.D. Thanks for the reply. Unfortunately, the sequence I listed is new to me in numerous ways. I have used Systane (before insertion) a few times before, but never after enzymatic cleaning, and never with Unique-pH. I've also never used the enyzme cleaner with UpH, only Boston. I asked my doc about this specifically, and he said it was okay. He also recommended the Systane trick. After about 3 hours of wear, things seem to be pretty normal. It did take a while though. Note that I did, in fact, soak the lenses overnight in fresh solution. I didn't wear them in-between, and I didn't rub them before the soak, I only rinsed them. I'll try Systane one more time and report back if the same thing happens again. What counts as usage of a non-approved product? Surely I can use eye drops, right? My eye doc suggested pretty much everything I'm doing, for whatever that's worth. -- > What counts as usage of a non-approved product? Surely I can use eye > drops, right? Some lens material manufacturers, like Menicon, have found that certain products *when applied to the lens* changes the surface characteristics or actually changes the chemistry. Some rewetting eye drops are culprits. Some storage solutions and certainly some cleaners can damage the lenses. I've seen that happen. Read the package insert from the lenses. Other companies "suggest" the use of products possibly for marketing reasons. The new lens chemistries are not as "inert" as in the old days. That applies to soft as well as gas perms. LB, O.D. |
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