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Author Topic: Can daily contact lenses be worn two days running?  (Read 10151 times)

Offline warsh88

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Having read a contact lens post on this forum, I have decided to ask my own question.

For about 2 years now, I have been effectively doubling the supply of daily lenses I buy, by wearing them for 2 days instead of daily and storing them in soft contact lens solution over night in between. I have had no problems whatsoever with this, maybe twice in those 2 years a lens has split in my eye, but the piece was easily gotten out! I have been told that it is O.K. by one optician and then was advised against it by another (trying to sell me more lenses perhaps?!). I was wondering what your views would be on this and if there is any risk. Many thanks!
« Last Edit: 22/06/2008 15:16:02 by chris »


 

Offline chris

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Can daily contact lenses be worn two days running?
« Reply #1 on: 22/06/2008 15:21:49 »
I think that this is a very high risk strategy.

A contact lens constitutes a foreign body and, as such, is nidus for infection. That is, bacteria and other organisms find it relatively easy to colonise the contact lens, and your immune system finds it relatively difficult to disarm them in situ.

The natural defences of the eye include tear production, blinking and secretory anti-microbial components such as IgA antibodies and lysozyme (an enzyme that breaks down components of the bacterial cell wall).

These defences are optimised to work on the native eye surface, not on a contact lens. This means that the lens can accumulate proteins and bacteria during daily wear, more organisms when you put your fingers in your eyes to remove the lens, and then even more organisms as they multiply whilst the lens sits over-night in a buffered solution containing no anti-microbial chemicals.

Consequently, you could be putting yourself at significant risk of a serious eye infection. The cornea is extremely delicate and infection can lead to ulceration and blindness.

I would argue that sight is worth significantly more than you are saving by using throw-away lenses more than once.

Chris
 

Offline Simulated

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Can daily contact lenses be worn two days running?
« Reply #2 on: 22/06/2008 15:24:05 »
Well, I have daily contacts. They havne't been out for over a month. I've hadd them in for 2 months straight once. Oops, but my vision is still good. And they are supposed to only be used for one month being taken out every night. Again, Oops haha. I have never had a split contact and I am going on my second year also..
« Last Edit: 22/06/2008 15:36:19 by Simulated »
 

Offline chris

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Can daily contact lenses be worn two days running?
« Reply #3 on: 23/06/2008 08:58:10 »
According to one optician I spoke with, "contact lenses are the largest single cause of eye problems in the developed world." I wear them from time to time, but I am less enamoured of them these days now that I realise the risks. Sight is far too precious and far too higher price to pay for vanity.

chris
 

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Can daily contact lenses be worn two days running?
« Reply #3 on: 23/06/2008 08:58:10 »

 

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