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thx1138 |
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thx1138 World Chat Champion
Joined: 06 Oct 2005 Karma :
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Posted: 18:41 - 01 Nov 2017 Post subject: Failed a field vision test. |
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Just went to opticians, did the usual tests, not been for three years. Still got above average long sight, reading glasses prescription stays the same, blew air in my eyes the usual.
Then did a field vision test, close an eye, click the button when I see the light, and repeat.I waited for results, and... missed loads with left eye, almost none with right.
Appointment made to go back and repeat test.
My dad has Glaucoma as did his dad before him.
Had a look on here;
https://www.nhs.uk/conditions/glaucoma/diagnosis/
So my question is, can glaucoma be diagnosed with a field vision test, or can it only be diagnosed by other means, and a field vision test would assess damage caused? (in which case, presumably I have some other sort of problem, or non at all) |
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M.C |
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M.C Super Spammer
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iooi |
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iooi Super Spammer
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 19:28 - 01 Nov 2017 Post subject: |
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It's diagnosed in animals using a tonometer which measures the pressure inside your eye but they are an instrument designed for use in humans so I presume this to the the case in them too.
You put local anaesthetic in the eye and touch the tonometer against the surface of the eyeball. It has a little metal rod inside (like a rounded off needle bearing) which is drops onto the eye surface and measures how high it bounces. That then tells you the intraoccular pressure.
They'd probably want to look round the drainage angle with a special lens that goes up against the surface of the eye and possibly ultrasound it too if they were suspicious of glaucoma. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Freddyfruitba... |
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Freddyfruitba... World Chat Champion
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andym |
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andym World Chat Champion
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Posted: 04:38 - 02 Nov 2017 Post subject: |
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I had an eye test a couple of months ago and noticed they changed the machine that does the field of vision test..... I was OK when it was the good ol' LED's inside the chamber that stuck with a constant light level.... the new one was just 1 light moving around and could be so dim it was almost impossible to see when right in front of my eye |
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MCN |
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MinhDinh |
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MinhDinh World Chat Champion
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Posted: 19:41 - 09 Nov 2017 Post subject: |
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I use to work in an Opticians. I believe if your pressures were above 21, it's a case for concern.
A field of vision test is definitely an indicator, but some are better than others at it. A good machine will tell the person if it is done correctly or there were faults.
If you are over 40, your eye tests should be done annually and is paid by the NHS. I recommend you do it every year to be on the safe side because it can affect a driving license. ____________________ Hit the G spot. |
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UnknownStuntm... |
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UnknownStuntm... World Chat Champion
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 10:17 - 10 Nov 2017 Post subject: Re: Failed a field vision test. |
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thx1138 wrote: |
My dad has Glaucoma as did his dad before him.
So my question is, can glaucoma be diagnosed with a field vision test, or can it only be diagnosed by other means, and a field vision test would assess damage caused? (in which case, presumably I have some other sort of problem, or non at all) |
Yes, it is hereditary. My father has it, his brother has it too and their father as well. I'm being tested every year, my brother says feck it. I'm nearsighted, so I would go to a ophthalmologist (an actuall doctor with a proper degree, not just a optician who did a short course on how to sell ugly glasses to nice people) anyway.
The field vision test only shows when something is wrong. I also had the test Stinkwheel described, although my doctor said it's quite on a theoretical level.
You can always ask to do the field vision test again elsewere, on a different machine. The very old method was a halfsphere with a specialist who would move a point (a source of light mostly) around on the halfsphere and the patient would say, if he can see it.
You may even test your vision at home. Get a ''square/grid paper'', not sure about the right English word here, it's a paper with grid on it. Put this on the table, close one of your eyes (cover it with your hand) and look at the paper, if you see all the squares of the grid, you are alright, if some are missing, you might have glaucoma.
I also have yearly what UnknownStuntman is describing, the ''inside of the eye look'', the best test there is, not that it would be 100% accurate, but it only takes a few secconds, unlike the field vision test with the clicker.
Now for the scary part, any glaucoma related damage is irreversible. If caught early, there are 3 options.
1) leave it and monitor the situation is not getting worse
2) eye drops to releave the pressure (my father uses them, not sure what it does but it stops glaucoma)
3) eye surgery (releaves pressure)
On an even scarier note, if you go to a doctor the moment you feel something is wrong, it's already too late.
One of the telling signs of glaucoma is perfect eyesight, if you can see even the smallest letters on the eyesight test board on the wall. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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V2 |
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V2 Nearly there...
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Ariel Badger |
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Ariel Badger Super Spammer
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Jewlio Rides Again LLB |
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Jewlio Rides Again LLB World Chat Champion
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supZ |
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supZ World Chat Champion
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UnknownStuntm... |
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UnknownStuntm... World Chat Champion
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supZ |
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supZ World Chat Champion
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Old Thread Alert!
The last post was made 6 years, 158 days ago. Instead of replying here, would creating a new thread be more useful? |
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