When soft contact lenses first came on the scene, the ocular community went wild.

People no longer had to put up with the initial discomfort of hard lenses, and a more frequent replacement schedule surely meant better overall health for the eye, right?

In many cases this was so. The first soft lenses were made of a material called HEMA, a plastic-like polymer that made the lenses very soft and comfortable. The downside to this material was that it didn’t allow very much oxygen to the cornea (significantly less than the hard lenses), which bred a different line of health risks to the eye.

As contact lens companies tried to deal with these new issues, they started to create lenses that you not only replaced more frequently, but also the materials themselves changed from HEMA to SiHy, or silicone hydrogel. The oxygen transmission problem was solved, but an interesting new phenomenon occurred.

Because these were supposed to be the “healthiest” lenses ever created, many people started to over wear their lenses, which led things, such as inflamed, red, itchy eyes; corneal ulcers; and hypoxia (lack of oxygen) from sleeping with their lenses in at night. A new solution was needed.

Thus was born the daily disposable contact lens, which is now the go-to lens recommendation of most eye care practitioners.

Daily disposables (dailies) are for one-time use, and therefore there is no risk of over wear, lack of oxygen, or any other negative effect of extended wear (2-week or monthly) contacts. While up-front costs of dailies are higher than their counterparts, there are significant savings in terms of manufacturer rebates. In addition, buying contact lens solution is no longer necessary!

While a very small minority of patient prescriptions are not yet available in dailies, the clear majority are, and it has worked wonders for patients who have failed in other contacts, especially those who have dry eyes.

Ask your eye care professional how dailies might be the right fit for you.

 

Article contributed by Dr. Jonathan Gerard

This blog provides general information and discussion about eye health and related subjects. The words and other content provided in this blog, and in any linked materials, are not intended and should not be construed as medical advice. If the reader or any other person has a medical concern, he or she should consult with an appropriately licensed physician. The content of this blog cannot be reproduced or duplicated without the express written consent of Eye IQ.



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