Contact lens ordering
3 years ago
last modified: 3 years ago
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- 3 years ago
- 3 years agolast modified: 3 years ago
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Contact lens wearers and swimming
Comments (12)I wear my contacts with swim goggles or snorkel gear, but never open my eyes or let water run into the eye while a contact is in there. I've worn contacts for 17 years. Last year in preparation for Cancun, I went and bought a pair of prescription RayBans. The place I went to (LensCrafters) let me pick out a really cool looking pair of RayBan shades, and they put my prescription in them! No one knew/knows they are prescript . They look 'normal'. I then bought one of those huggy things for the stems of the shades, which wrapped around my head. Even with some nice waves and getting dunked, the RayBans stayed PUT and I could see. I just wiped the water droplets off when I surfaced. I cannot swim without being able to see, I am that blind... I'd panic, even if it was in a pool I knew very well. - darkeyedgirl p.s. there is also Lasik surgery.. no more contacts OR glasses. Once my eyes quit changing I'm going to fork over the $$$ and get it done finally....See MoreNo standard measurements for contact lens Rx??
Comments (4)I'm guessing that the "brand names" are rather proprietary, so they don't want folks to buy generics of the same specifications at a cheaper cost. They'd be out of business in no time at all. I've worn "hard" contact lenses for 32 years. Been wearing the gas perms ever since they were "invented." Been there, done that with the monovision - hated it. I have true bifocal gas perms now. They're great! Why not just ask your eye doctor (from whom you got the gas perms) what it would cost for a spare pair? Paula is absolutely correct. For long-term storage of "hard" lenses, you should clean them thoroughly, then put them in a clean, dry contact lens case. Put a piece of tape on the bottom that has the date, and any Rx info that you might have....See MoreIs a left-eye contact different from a right-eye contact?
Comments (10)os = oculus sinister od = oculus dexter oculus = eye in Latin sinister = left in Latin dexter = right in Latin With rigid gas permeable (RGP) lenses, three things affect whether lenses can be interchanged: correction for each eye, shape of each eye and how well the lenses fit. Over the course of 39 years of wearing contacts, there have been times when the correction and shape were so similar that I couldn't tell if I had reversed the lenses. Other times it was very obvious that I had reversed them because either the correction was "off" or there was physical discomfort because the shape of the eyes was significantly different. I also had one lens that fit so poorly that I kept thinking that I must have reversed the lenses. (I finally had it replaced.) At each exam and fitting, get your eye doctor to explain in non-medical terms what is going on with the eyes. If s/he can't or won't do this, it's time to find someone else....See MoreReplace Canon G12 Powershot lens
Comments (3)At today's prices and the fast pace of developments in digital camera, your money may be better spent on a replacement camera. (I do not know how much you will spend for your replacement lens and that is a maor factor.) Again, I do not know if you will be taking the lens apart to replace some glass, or will it be a complete assembly that will be swapped out. In genreal, if a lens is taken apart, it requires an aligment bench to put it back together. Optics often have 'tilt' rings in the barrels to get the best alignment of the lens. The lens cane be tilted a very small amount by rotating the tilt rings. The next critical item is lens spacing, e.g., the position of each glass element relative to its neighbor for best focus. Lens protection: In either case, a replacement lens or new one can be protected by placing a UV filter over the lens. UV filters were common for film cameras since the films were sensitive to light beyond the blue range seen by the human eye and could fog a photo. It was common practice to leave a UV filter on the lens for protection from dust and scratches. If the filter got damaged, merely replace it. A UV filter will reduce the amount of light entering the lens, but not by much. Most filter suppliers provide the reduction in terms of f-stops. If the reduction is less than 1/2 f-stop, it will not have much effect on exposure speed. If your camera has automatic light metering through the lens, you will not have to make any manual adjustments; And most digital cameras do light metering through the lens....See More- 3 years ago
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