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Post by Dave_McCoy on Jun 29, 2022 22:37:32 GMT
So much stuff....astigmatism is when, as people mentioned, you have a rugby ball shaped eye and you actually have two focal points in the eye. This can be simple, mixed or compound. Basically means you need two corrections to bring the light to a single point at the macula (place of best vision) on the retina.
The clicks light test is a field of vision test. Largely routine on people over 35 or with a family history of glaucoma. Some optoms bloody love that test. But it looks for blind spots on the retina that your brain would fill in and not notice.
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Post by Dave_McCoy on Jun 29, 2022 22:41:49 GMT
I just had a test, they put drops in to make your pupils dilate enormously so they can measure the retina thickness and stuff like that, think that’s only recommended every few years though. That is more interesting. I'd have thought you could get retina thickness from an OCT. Not sure how dilating you is going to achieve that. Usually dilation I'd for a larger look at the back of the eye with a traditional instrument or slit lamp. Might be a question for me to check tomorrow.
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Deleted
Deleted Member
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Post by Deleted on Jun 29, 2022 22:45:30 GMT
Here is my eye. Some lovely scarring right next to the optic nerve, I was actually quite lucky to retain any vision. imgur.com/gallery/FdHqX71
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Post by Dave_McCoy on Jun 29, 2022 22:48:18 GMT
Here is my eye. Some lovely scarring right next to the optic nerve, I was actually quite lucky to retain any vision. imgur.com/gallery/FdHqX71Ooh, yes. That's a picture, very nice. The scarring next to the optic nerve would probably give you a bigger blind spot. The macula is over to the right of that and that would have totally done you over if the damage was there.
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Post by brokenkey on Jun 30, 2022 19:16:58 GMT
This week I learnt that Transitions lenses don't work when the temperature gets above 32. I wondered why I'd been getting headaches.
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Post by elstoof on Jun 30, 2022 19:37:39 GMT
That’s natures way of stopping you look like a complete pervert
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H-alphaFox
Junior Member
Buy Kramer Coin now!
Posts: 2,287
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Post by H-alphaFox on Jun 30, 2022 20:22:27 GMT
I've stolen the kids magnifying glass. Perfect for food labels and instructions. Understand why my Nan always had one handy now.
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Post by brokenkey on Jul 1, 2022 5:42:03 GMT
That’s natures way of stopping you look like a complete pervert I'm in Italy ATM, so what you call perving is completely normal here (I tell myself).
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Post by Dougs on Jul 1, 2022 6:26:24 GMT
Transition lenses make people look like nonces though, not just perves. Get rid imo.
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Post by brokenkey on Jul 1, 2022 6:41:42 GMT
I thought that for a long time too. But they are so much better than squinting in bright sunlight. If you have avoided them for the sake of worrying what other people think, I'd urge you to get over yourself. They are great.
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Post by Aunt Alison on Jul 1, 2022 7:09:51 GMT
Nothing wrong with looking like a paedo if that's what you like. Ignore them
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Post by elstoof on Jul 1, 2022 7:17:51 GMT
The problem, apart from looking like you’re on your way to hang outside the school gates at 3:30, is the same frames don’t really work for both regular specs and sunnies
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Post by brokenkey on Jul 1, 2022 8:21:50 GMT
Ray-Ban Wayfairers disagree. I get to look like Buddy Holly AND Roy Orbison depending of how bright the sun is (and the ambient temperature). I have the posh iconic green lens colour.
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Post by elstoof on Jul 1, 2022 8:51:55 GMT
Whatever works for you
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Post by Aunt Alison on Jul 1, 2022 9:02:14 GMT
Nothing on Buddy Holly or Roy Orbison's Wikipedia pages about them being paedophiles
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Post by snackplissken on Jul 1, 2022 9:20:05 GMT
I have a prescription pair of glasses, which I rarely use, as I can't be arsed to switch to normal indoors.. and looking like a twat wearing sunglasses inside. NO THEY'RE PERCRIPTION IT'S FINE.
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Post by elstoof on Jul 1, 2022 9:20:35 GMT
Roy married a teenager tbf
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Post by Aunt Alison on Jul 1, 2022 9:23:18 GMT
I just got this new tracksuit that makes me look like Jimmy Savile Ray Liotta in Goodfellas
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dogbot
Full Member
Posts: 8,738
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Post by dogbot on Jul 1, 2022 11:01:35 GMT
Roy married a teenager tbf He was just tired of being lonely. He still had love to give.
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Post by Samildanach on Jul 1, 2022 18:55:38 GMT
On the initial topic of online glasses vs Opticians dispensed glasses:
Think of the difference as being the same as buying a suit online vs having one made to measure by a professional tailor. Sure, the online purchase may be perfectly fine, but by cutting out a professional you won't necessarily get the best. The pupillary distance measurement is not the only measurement that applies to making a lens work well for you. The entire position, distance and tilt of the lens before your eye matters too.
A low-powered online single vision pair is likely to feel alright even if the lenses are not properly aligned & tilted correctly. But as you increase the complexity, either with higher, more toric (for astigmatism) or varifocal (for oldness) powers, then those small errors are likely to make a far less than ideal product.
Finally, you may not actually be comparing like-for-like even if you discount the professional side. Cheap lenses are mass-made from moulds. The cheaper the lens, the less often the mould is replaced and hence the less good the workmanship. The centre of the lens has to be the correct power, but as you look peripherally you may be more prone to aberrations or distortions. Higher quality lenses, such as from Hoya or Zeiss just for example, will be individually cut by a diamond lathe to a very specific algorithm. A lens' power comes from a combination of the curvature of its front and back surfaces as well as the optical density of its media and if the calculations of these components are just right, you get a very beautiful lens with much better peripheral optics. Obviously this costs much more (to the Opticans too).
So use cheap for a pair of some reading specs that may get sat on or easily lost. If you are wearing glasses all day (including looking at your £1000+ flatscreen TV), then maybe consider a quality lens dispensed by a professional.
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Post by brokenkey on Jul 1, 2022 19:49:53 GMT
Since we have some professionals, here's my last nightmare from getting new glasses: https://www.reddit.com/r/optometry/comments/rxaqmu/what_language_or_terms_should_i_use_to_tell_my/
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Post by Sarfrin on Jul 1, 2022 20:34:25 GMT
On the initial topic of online glasses vs Opticians dispensed glasses: Think of the difference as being the same as buying a suit online vs having one made to measure by a professional tailor. Sure, the online purchase may be perfectly fine, but by cutting out a professional you won't necessarily get the best. The pupillary distance measurement is not the only measurement that applies to making a lens work well for you. The entire position, distance and tilt of the lens before your eye matters too. A low-powered online single vision pair is likely to feel alright even if the lenses are not properly aligned & tilted correctly. But as you increase the complexity, either with higher, more toric (for astigmatism) or varifocal (for oldness) powers, then those small errors are likely to make a far less than ideal product. Finally, you may not actually be comparing like-for-like even if you discount the professional side. Cheap lenses are mass-made from moulds. The cheaper the lens, the less often the mould is replaced and hence the less good the workmanship. The centre of the lens has to be the correct power, but as you look peripherally you may be more prone to aberrations or distortions. Higher quality lenses, such as from Hoya or Zeiss just for example, will be individually cut by a diamond lathe to a very specific algorithm. A lens' power comes from a combination of the curvature of its front and back surfaces as well as the optical density of its media and if the calculations of these components are just right, you get a very beautiful lens with much better peripheral optics. Obviously this costs much more (to the Opticans too). So use cheap for a pair of some reading specs that may get sat on or easily lost. If you are wearing glasses all day (including looking at your £1000+ flatscreen TV), then maybe consider a quality lens dispensed by a professional. Thanks, a very clear explanation that had me looking around the edges of my expensive, highly toric and varifocal lenses and appreciating how well I can see through them.
ETA I also feel that if I don't get glasses from IRL opticians who can adjust or fix them when they go wrong and spot nasty problems in my eyes at the eye test, they won't be there when I need them.
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Post by Dave_McCoy on Jul 4, 2022 9:54:20 GMT
@safrin
You are right to a certain extent. Independents take the brunt of people going online as it squeezes the margins for us which larger multiples can handle.
I am pretty good though with people wandering in with online bought glasses. I'm happy to have a look at them.
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Post by Samildanach on Jul 4, 2022 18:59:52 GMT
@safrin You are right to a certain extent. Independents take the brunt of people going online as it squeezes the margins for us which larger multiples can handle. I am pretty good though with people wandering in with online bought glasses. I'm happy to have a look at them. You can also spot them a mile off as they turn up pushing up their glasses because the length to bend is too long. "Oh no, these have fit very well from the start. They just have got a little loose..."
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Post by freddiemercurystwin on Sept 8, 2022 18:46:24 GMT
Would I be right in thinking my employer should pay for my new eyetest? Or does it only ever apply to the first one you have with an employer?
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Post by elstoof on Sept 8, 2022 18:48:39 GMT
You would probably not be right
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Post by One_Vurfed_Gwrx on Sept 8, 2022 19:30:42 GMT
Would I be right in thinking my employer should pay for my new eyetest? Or does it only ever apply to the first one you have with an employer? That would depend if your empliyer either has any deals (and therefore vouchers) for contract sight tests with an optician or offers refunds in sight tests that you get.
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dam
New Member
Posts: 584
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Post by dam on Sept 9, 2022 9:31:57 GMT
Would I be right in thinking my employer should pay for my new eyetest? Or does it only ever apply to the first one you have with an employer? That got me thinking I could put it through my company...then I remember I'm in Scotland and it's free
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Bongo Heracles
Junior Member
Technically illegal to ride on public land
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Post by Bongo Heracles on Sept 9, 2022 9:36:29 GMT
At our place, if the bulk of your work is done in front of a monitor, you can claim the cost back on expenses. Its worth checking with HR to see if thats the case and how you'd claim, but a few places I have worked have reimbursed the cost.
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dogbot
Full Member
Posts: 8,738
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Post by dogbot on Sept 9, 2022 10:08:04 GMT
Same with us, it can be expensed.
Which reminds me, I need to get mine done.
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