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Medical Forum / General / Vision / May 2008Progressive and sunlight-transition - good match?
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. > 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 What's the purpose of making your lenses photochromic? The pupil is automatically adjusted for lighting conditions so I don't get it. And what's the danger of sudden transition from low light to bright sunlight such that a means of regulating it artificially with lenses should be necessary? > <rastlo...@rogers.com> wrote > [quoted text clipped - 10 lines] > > -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 On 9 May, 18:46, rastlo...@rogers.com wrote: > > <rastlo...@rogers.com> wrote > [quoted text clipped - 17 lines] > Cheers, > --Robert Why do you want to protect yourself from UV rays? > 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?  SignaturePramesh Rutaji p297tongue6221@newsguy.com - remove tongue to reply > rastlo...@rogers.com wrote: > > Thanks Mike. After consulting with the optician, I've chosen to leave [quoted text clipped - 14 lines] > > p297tongue6...@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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