- vision enhancement for close work - 6 Updates
| Tim R <timothy42b@aol.com>: Dec 15 09:16AM -0800 Thanks. Wow, Mr. Rossman seems knowledgeable, but it takes him a VERY long time to get to the point of anything. |
| Jeff Liebermann <jeffl@cruzio.com>: Dec 15 10:06AM -0800 On Fri, 14 Dec 2018 14:55:03 -0800 (PST), Tim R <timothy42b@aol.com> wrote: >I've just entered the "post cataract surgery" world. >Results were good for distance vision. I can't bring anything >close to see anymore, focusing just doesn't work. So it is written, so it seems to be: "Will I Need Glasses After Cataract Surgery?" <https://www.allaboutvision.com/conditions/faq-cataract-glasses-after-surgery.htm> If you choose standard cataract surgery with intraocular lens (IOL) implantation, it's likely you will need reading glasses and possibly computer glasses or other special-purpose eyewear afterward, depending on your visual needs. Offhand, it appears that you had both eyes adjusted for distance vision, which I suspect is responsible for the current problem: "Should I choose distance vision in both eyes, monovision, EDOFs or multifocals?" <https://www.healio.com/ophthalmology/optics/news/print/ocular-surgery-news/%7B92ba3ce8-179f-447e-ab48-ee7729d0db76%7D/should-i-choose-distance-vision-in-both-eyes-monovision-edofs-or-multifocals> >right now threading a needle would be impossible. Reading >glasses and a large monitor let me type, but I can't get >smaller yet. Methinks you should see an optometrist and have your eyes tested. Once you have a prescription, order a pair of the cheapest glasses you can find from Zenni Optical: <https://www.zennioptical.com> They will probably help, but the real questions is whether you can live with single vision glasses for reading and close in work, or if you'll need bifocal, trifocal, or progressive lenses. There is also a question whether conventional plastic lenses will work, or if you'll need high index of refraction lenses. <https://www.eyeglasses.com/high-index-lenses.html> >Before I had it done I was researching digital microscopes, but now >I realize it doesn't matter how big something is on a screen if I >can't focus on the screen. Yep. A big blurrr is just as difficult to read as a small blurrrrr. >How have you solved this? Some of you must be up around my age, >perhaps even past it <g> I'm 70 years old and seem to have progressive astigmatism, which means my prescription changes sufficiently to require new glasses every year. Right now, I see double without correction. I did some trial and error testing using cheap glasses from Zenni Optical, which proved to be far better and cheaper than trial an error at the opticians store. At this time, I have some trouble seeing clearly through binocular microscope eyepieces with or without glasses. I can make it work, but there's some eyestrain after about 10 mins. What works best for me is a microscope camera and LCD display screen using my "computer glasses" at a fixed distance. I suspect that you'll find that the big blurrr will look much better with corrective glasses. Good luck, and do some experimenting. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
| Look165 <look165@numericable.fr>: Dec 15 08:32PM +0100 You could try a frontal binocular for instance : https://www.loupeboutique.fr/Loupes--clairantes/Loupe-Frontale-8x--avec-trois-lentilles----DEL.html . It magic, I have one. Or a desktop viewer (I have one too) like : http://www.moineau-instruments.com/loupe-eclairante/647-lampe-loupe-225-x-avec-circline-22w-2810-2ve.html These are French products ; you surely can find equivalent nearby. Tim R a écrit : |
| John Keiser <johnkeiser@juno.com>: Dec 15 09:44AM -1000 On 12/14/2018 12:55 PM, Tim R wrote: > I don't do a lot of precision work like you all do, but right now threading a needle would be impossible. Reading glasses and a large monitor let me type, but I can't get smaller yet. > Before I had it done I was researching digital microscopes, but now I realize it doesn't matter how big something is on a screen if I can't focus on the screen. > How have you solved this? Some of you must be up around my age, perhaps even past it <g> I agree that Zenni is a good choice. The mistake many people make is not taking the time to select the properly sized frame online. If you have a comfortable pair of glasses, note all the measurements carefully [frame width, lens size, temple arm, bridge] and be sure that what you order online closely approximates each of those measurements. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
| bitrex <user@example.net>: Dec 15 08:30PM -0500 On 12/14/2018 08:08 PM, Tim R wrote: >> work with and the microscope is over half that. > Thanks. Are we talking an optical microscope, or something digital? Any recommendation? > I've tried binoculars since the surgery, and they work very well, much better than before. Modern smartphone with the rear camera and LED turned on, "magnifying glass" app, gripped in a pair of QuadHands is an expedient "low tech" solution that's not half bad at all! <https://www.dropbox.com/s/i4b2on7yy1n9u14/Photo%20Dec%2008%2C%202%2019%2007%20PM.jpg?dl=0> <https://www.amazon.com/QuadHands-Helping-Hands-Third-Soldering/dp/B00GIKVP5K> |
| mike <ham789@netzero.net>: Dec 15 06:40PM -0800 On 12/15/2018 5:30 PM, bitrex wrote: > <https://www.dropbox.com/s/i4b2on7yy1n9u14/Photo%20Dec%2008%2C%202%2019%2007%20PM.jpg?dl=0> > <https://www.amazon.com/QuadHands-Helping-Hands-Third-Soldering/dp/B00GIKVP5K> How long did it take for your brain to fixup the hand-eye coordination? I tried a similar solution and could never get my hands to go where my vision wanted them to go. |
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