Last updated: 24 October 2007
Subject: Guard your precious eyesight! Sent: Tuesday, October 23, 2007 14:32:21 From: Benjamin Waranowitz (firstname.lastname@example.org) Advice to those who DO NOT HAVE CATARACTS. Guard your precious eyesight! Find out if getting cataracts runs in the family. It does in mine. Fluorescent tube lamps need UV shielding. You need to avoid 40CW types at home and work. Not only can unshielded UV cause headaches, they can trigger cataracts. The decorative plastic cover on the 40CW overhead lighting is NOT rated to filter UV. The long tubes are the ones which emit UV that can cause problems. Also avoid the compact under counter type. Now we are starting to convert to the energy efficient screw in types with a twisted tube on top. I don't think you can trust the manufacturers to consider the UV emission. There is no mention of UV on my GGE lamp package. I called the number 800-435-4448 on the 15W (60W light equivalent package. It did not take very long to get a Mr. Dudley who seemed to have a lot of information at hand. but the screw in types are not supposed to. Note that the ends of the coiled screw-in lamp are covered with a ceramic base. The long tubes are not. I hade worked in data centers for most of my career as customer engineer in brightly lighted overhead lighting, all the four tube type. I suspect this had contributed to the eventual cataracts. To be safe, I recommend that you use incandescent lamps on your desk or place where you spend much time with a nearby light. Driving is hazardous to sight. We must stare into the Sun or its reflection in other vehicles glass and chrome. It is damage that happens with no sensation of pain. Sometimes discomfort, but no real warning. I have my driving prescription eyeglasses. I selected a frame that is fairly large to give more angular coverage. The lens are pretty dark, and besides that I have the multi-coating. My plastic lenses do not scratch like the old glass ones did. I have cataracts in both my eyes. My right eye, which was the dominant one, got it first. The halo around lights and the Moon at night was very distracting. I also had the beginning of cataract in the left one, five years ago. NUTRITION HELPS I began to religiously take vitamins E 200 or 400 mg and A 8000 supplements at the time I was diagnosed with the catarect in the O.D. (Latin for eye, right) For these 5 years, my O.S. (eye; left or Sinister) the cataract in the left eye has changed little. I don't see a halo, though it is generally hazy and is like a filter to diminish the blue end. I probably lose a magnitude or more when observing. This is easily determined by comparing how many satellites of Saturn that I can see in the right and left eye with the lens implant. Problem with the lens implant. as long as the pupil is not dilated it has good correction. However when I look at the Moon, planets bright stars, 1 magnitude is enough to show a hazy crescent below them. And in eyepieces I see the edge of the lens at the bottom. There would be difficulty in getting a correct prescription for this because the optometrist does not measure the eye for dark adapted. I would ask them to figure the correction when my pupil is dilated the next time. And not when fully dilated, but I will bring a small telescope to check when it is about right. There is always risk in surgery. As long as my o.d. cataract seems to be stable and I can see fairly well with it and the correction I will keep it. Visual astronomy with a telescope is such that for large exit pupils I generally use my right eye and my left for small exit pupils. I would not like to have the left eye also with the lens edge visible when dark adapted. In addition to the above, I have had a small retinal tear due to a vitreous detachment in one eye. And a vitreous detachment in the other. This left a vail like structure which moves with each eye movement and often comes to rest near the center of vision. In daylight is is hardle noticed. But it took several months to learn to ignore it. It also has a refractive component to blur central vision. Ben Waranowitz email@example.com
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