Andrea wrote:
Hi
I have been doing contact lens trials. I have narrowed down my choice to dailies but am not sure of which brand / size to pick.  My trials range from BC 8.5-8.7 and diameter 14-14.2; the strength is 1.5+.  Before I commit to a year supply, I want to make sure that I am getting the best size and brand combination for my eye (I only need a lens for my right eye).  Shouldn’t I be comparing lens with the same measurements instead of variation in brand, diameter and base curvature? How do I know if the issue is the fit vs. lens brand?  For example, if the Logic 1 day (14, 8.6) feels like a better fit than 1 day Acuvue moist (14.2, 8.5) and Ciba Daily (8.7) should I try the Acuvue and Daily with the same measurements as the Logic before deciding? I find the logic 1 day least noticeable when wearing (14, 8.6). The Ciba Daily (8.7) moves around and has fallen out. The Acuvue moist is comfortable for the first 10 hours.  I won’t be able to see my optometrist for 1 1/2 weeks and only a few trials left.  Hopefully I can get a few more trial lenses before making a decision. Thanks in advance.

ANSWER

Andrea,

Each brand of disposable contact lenses comes in certain parameters.  Basically the lens brand determines the fit as each brand of daily disposable usually only has one base curve and one diameter.  To explain further you cannot try an Acuvue or Ciba daily disposable in the same parameters as the Logic 1 day because they do not exist.  The diameter and base curvature with soft contact lenses, especially daily disposables have little effect on the fit in most cases.  It’s kind of like one size fits all.  An 8.5 vs. 8.6 vs. 8.7 are of negligible difference with this type of lens.  For most people any of these base curves will fit well.  The thing that will determine the comfort is the type of material and the coatings/solution the lenses have been sitting in.  For some people one brand may be more comfortable and for others a different brand may give the best comfort.  As long as your optometrist says that they all fit well on your eye and that your vision is good, it is up to you to decide which one feels the best.  It is quite possible that more than one of them may feel good and give excellent vision.  In that case either one will be a good choice for you.

Dr. Carol Doman

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