"Des" <(E-Mail Removed)> wrote in news:40dd6f52$0$291$cc9e4d1f@news-
text.dial.pipex.com:
> I am aged 42 (entering presbyopia, I think) and recently had my eyes
> re-tested for glasses, my prescription was:
>
> OD (Right) Sph: -8.75 Cyl: -1.25 Axis: 178
> OS (Left) Sph: -9.50 Cyl: -0.75 Axis: 175
>
> I also wanted to give my face and eyes a rest from glasses for about a
> year or two, so I had a contacts test (first time) and was precribed
> Acuvue 2:
>
> OD (Right): Power: -8.5 BC 8.7 Dia: 14.0
> OS (Left): Power: -9.0 BC 8.7 Dia: 14.0
>
> I find the Acuvue comfortable and improve my general vision, but things
> still seem slightly out of focus, not much, but enough to concern me.
>
> I have been doing a little research and discovered this may be due to my
> astigmatism and wondered if toric lenses, specifically Acuvue Toric may
> be more benefical to me (don't want to go down the bifocal route just
> yet) am I right in thinking this ?
>
> TIA
> Des
>
>
>
You definitely have enough cylinder to justify trying a toric in the right
eye. Whether the Acuvue toric would work would be a matter of trial and
error. It is not a prism ballast lens, but works on the principle of thin
zones for the upper and lower lids. Therefore, it will work better on some
patients than with others, depending on lid anatomy. The problem with
toric lenses is that they often rotate, sometimes unpredictably, which
defeats the purpose. Also, the prism ballast lenses are thicker, and this
in a lens that is already thicker because of the high prescription, which
leads to hypoxia from lack of oxygen delivery. You may want to consider a
lens like Focus N&D, which tends to mask a little more cylinder, or an RGP
lens.
DrG
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