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Science Forum Index » Medicine - Vision Forum » Progressive and sunlight-transition - good match?...
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 Posted: Thu May 08, 2008 2:14 pm |
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Hi all. I am about to get my third progressive lens prescription
(will be trying a higher-end lens to hopefully alleviate some
distortion problems I have been having with my present Esilor Panamic
lenses). The new frames I chose don't come with sunlight clip-ons, so
I was recommended to also get the sunlight-transition feature into the
lens. My concern is that the sunlight-conversion feature may take
away from some of the clarity and focus of the progressive lens.
SHould I be concerned about such a negative effect? Thanks. |
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| Mike Tyner... |
| Posted: Thu May 08, 2008 8:45 pm |
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<rastlouis at (no spam) rogers.com> wrote
Quote: lens. My concern is that the sunlight-conversion feature may take
away from some of the clarity and focus of the progressive lens.
SHould I be concerned about such a negative effect? Thanks.
No. Making your lenses photochromic doesn't add any blur.
All multifocals create blur just because they're multifocals.
Progressives spread the blur around more smoothly. Bifocals and trifocals
divide it into discrete chunks.
-MT |
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| Posted: Fri May 09, 2008 7:46 am |
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On May 8, 9:45 pm, "Mike Tyner" <mty... at (no spam) mindspring.com> wrote:
Quote: rastlo... at (no spam) rogers.com> wrote
lens. My concern is that the sunlight-conversion feature may take
away from some of the clarity and focus of the progressive lens.
SHould I be concerned about such a negative effect? Thanks.
No. Making your lenses photochromic doesn't add any blur.
All multifocals create blur just because they're multifocals.
Progressives spread the blur around more smoothly. Bifocals and trifocals
divide it into discrete chunks.
-MT
Thanks Mike. After consulting with the optician, I've chosen to leave
the photochromic (conversion) feature off, and opted for some good
sunglass clip-on's instead. About the same price, and I feel more
confident about the UV protection with the clip-on's.
Cheers,
--Robert |
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| Zetsu... |
| Posted: Fri May 09, 2008 8:04 am |
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On 9 May, 18:46, rastlo... at (no spam) rogers.com wrote:
Quote: On May 8, 9:45 pm, "Mike Tyner" <mty... at (no spam) mindspring.com> wrote:
rastlo... at (no spam) rogers.com> wrote
lens. My concern is that the sunlight-conversion feature may take
away from some of the clarity and focus of the progressive lens.
SHould I be concerned about such a negative effect? Thanks.
No. Making your lenses photochromic doesn't add any blur.
All multifocals create blur just because they're multifocals.
Progressives spread the blur around more smoothly. Bifocals and trifocals
divide it into discrete chunks.
-MT
Thanks Mike. After consulting with the optician, I've chosen to leave
the photochromic (conversion) feature off, and opted for some good
sunglass clip-on's instead. About the same price, and I feel more
confident about the UV protection with the clip-on's.
Cheers,
--Robert
Why do you want to protect yourself from UV rays? |
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| Pramesh Rutaji... |
| Posted: Fri May 09, 2008 5:02 pm |
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rastlouis at (no spam) rogers.com wrote:
Quote: Thanks Mike. After consulting with the optician, I've chosen to leave
the photochromic (conversion) feature off, and opted for some good
sunglass clip-on's instead. About the same price, and I feel more
confident about the UV protection with the clip-on's.
Cheers,
--Robert
Given a choice, I always decline any UV protection.
The question is, do people in brighter climates who spend a lot of time
outdoors have eye problems as a direct result of UV exposure?
--
Pramesh Rutaji
p297tongue6221 at (no spam) newsguy.com - remove tongue to reply |
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| Zetsu... |
| Posted: Fri May 09, 2008 10:15 pm |
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On 9 May, 23:02, Pramesh Rutaji <p297tongue6... at (no spam) newsguy.com> wrote:
Quote: rastlo... at (no spam) rogers.com wrote:
Thanks Mike. After consulting with the optician, I've chosen to leave
the photochromic (conversion) feature off, and opted for some good
sunglass clip-on's instead. About the same price, and I feel more
confident about the UV protection with the clip-on's.
Cheers,
--Robert
Given a choice, I always decline any UV protection.
The question is, do people in brighter climates who spend a lot of time
outdoors have eye problems as a direct result of UV exposure?
--
Pramesh Rutaji
p297tongue6... at (no spam) newsguy.com - remove tongue to reply
Humans have been exposed to bright climates and UV rays since the
crack of existence, what boggles me is why we suddenly feel the need
to protect ourselves from these rays when for many thousands of years
humans have lived happily without problems in their company. |
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