 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Medical Forum / General / Vision / November 2005Crystal Clear LCD Screen, Blurry paper
Hi, Thought I'd post again as my previous post probably came across as neurotic. Right, after two and a half weeks off from work on sick, I've returned to work to find nice shiny new LCD Monitors. I am 28, otherwise fit and healthy, apart from being overweight, and have about +0.50 in each eye of longsightedness, and -0.50 astigmatism. Numbers actually fluctuate between a .25 and .75 so this is just an average reading just to let you know it wasn't that serious, and those readings are from May 2005. Now, I can see otherwise fine at home, and elsewhere, though I might need some aid at times from the glasses I had made up. At work though, it's a different story. The screen, is perfectly readable. I've never come across such a sharp screen. However after an hour of this under those fluorescent lights, when I look at some paper (printed or written text) at the same distance as my monitor (about 40 cm), it is unusually blurry. I've never noticed anything like this before my two and a half week absence, and Im quite worried as the paper looks blurry, but the LCD monitor looks crisp and clear every single time. The glasses give me a period of clarity and sharpness, though there is still a sense like Im looking through a fish bowl, almost like the letters don't seem to be on the paper? I still havent got this analogy down to a tee, it's very hard to explain, but it's like after having atropine, or those drops to dilate your pupil for an eye exam, so much so, that even looking at a white board 5 metres away looks weird. I figured out the term for the blurryness, as being "anti alias" I can't explain it though, it's something different to just fuzzy text. Anyhow, Im quite concerned and will be raising this with my GP on Monday, but in the meantime, if anyone has any advice, I'd be grateful. > Anyhow, Im quite concerned and will be raising this with my GP on Monday, > but in the meantime, if anyone has any advice, I'd be grateful. Your GP will have little to offer except referral to an eye surgeon. Yes, you do seem to be a little anxious about your symptoms, and I think that makes your symptoms worse. > The glasses give me a period of clarity and sharpness, though there is > still a sense like Im looking through a fish bowl, almost like the letters > don't seem to be on the paper? "Fish bowl" is a very familiar complaint in the optical industry. A certain amount of barrel distortion is inevitable with prescriptions like yours. When the prescription is "right", the effect seems to go away after a few days of full-time wear. Barrel distortion can be diminished with smaller lenses, closer-fitting glasses, and contact lenses. When the sensation doesn't go away, sometimes it means the prescription is stronger than it needs to be and we recheck the prescription after cycloplegic drops. > so much so, that even looking at a white board 5 metres away looks weird. Does "weird" mean the edges aren't straight? > I figured out the term for the blurryness, as being "anti alias" "Blur" means lack of focus. "Distortion" usually means apparent bends, curves, waves, etc. Many eye people don't know the difference between anti-alias and Auntie Alice. > I can't explain it though, it's something different to just fuzzy text. Barrel distortion is one of the problems you named. The other wierdness had to do with printed and handwritten text, and how it differed from LCD. I got the impression you were describing letters that seem to stand out, in 3-D, off the page. If my understanding is accurate, then I think I have an explanation, but I'll wait to see if I'm reading you right. Bottom line, your observations are probably accurate and your symptoms can probably be explained in terms of known optical phenomena and so far they don't indicate any disorders of the eyes or brain, except maybe neurosis. So relax and tell us more about it. -MT >> Anyhow, Im quite concerned and will be raising this with my GP on >> Monday, but in the meantime, if anyone has any advice, I'd be [quoted text clipped - 4 lines] > Yes, you do seem to be a little anxious about your symptoms, and I > think that makes your symptoms worse. I hope not. I only seem to be getting these issues at work. I can sit in front of my lovely CRT monitor at home all day, then look at some paper, and everything feels great. The difference is when I go into work... Eye surgeon sounds ominous, but I'll answer the rest of your questions... I think you hit the nail on the head later on. Thank you very much for replying, it is very much appreciated... >> The glasses give me a period of clarity and sharpness, though there >> is still a sense like Im looking through a fish bowl, almost like [quoted text clipped - 6 lines] > diminished with smaller lenses, closer-fitting glasses, and contact > lenses. THat would be difficult to wear contact lenses just for close up work then keep taking them out. > When the sensation doesn't go away, sometimes it means the > prescription is stronger than it needs to be and we recheck the > prescription after cycloplegic drops. That sounds weird. The sensation is there with or without glasses (only at work) and the prescription is very minimal as far as I can tell... and I've never had this sensation before! With or without the glasses! >> so much so, that even looking at a white board 5 metres away looks >> weird. > > Does "weird" mean the edges aren't straight? No, i think the edges are straight. Although I do sense ripples in the paper a bit too easily that it's distracting. >> I figured out the term for the blurryness, as being "anti alias" > > "Blur" means lack of focus. "Distortion" usually means apparent > bends, curves, waves, etc. Many eye people don't know the difference > between anti-alias and Auntie Alice. Hrm. It feels distorted, but there's no distortion then, because I know there's no bends, curves, waves etc. >> I can't explain it though, it's something different to just fuzzy >> text. I think I meant here sorry, it's MORE than just fuzzy text... > Barrel distortion is one of the problems you named. Though I was probably incorrect given that things do seem straight... > The other > wierdness had to do with printed and handwritten text, and how it > differed from LCD. I got the impression you were describing letters > that seem to stand out, in 3-D, off the page. If my understanding is > accurate, then I think I have an explanation, but I'll wait to see if > I'm reading you right. That sounds like the thing actually... letters seem to stand out, which is probably why Im getting freaked out since I know the things are on the paper, I know the writing is on the board and I can't correlate the two... Im looking at some fuzzy text at home of a scan I made of a piece of paper, and that looks fine... that's why I say it's more than just fuzzy, or blurry text... I think the standing out and the 3-D off the page might be great explanation. > Bottom line, your observations are probably accurate and your > symptoms can probably be explained in terms of known optical > phenomena and so far they don't indicate any disorders of the eyes or > brain, except maybe neurosis. So relax and tell us more about it. No disorders? Oh great, please don't tell me Im imagining it... Mind you, known optical phenomena... does that mean I should switch back to a CRT at work? I've read about contrast sensitivity, maybe I should change my monitor contrast and brightness settings??? Thanks Simon > I hope not. I only seem to be getting these issues at work. I can sit in > front of my lovely CRT monitor at home all day, then look at some paper, > and everything feels great. The difference is when I go into work... I've never heard of LCD monitors "causing" such symptoms. There might be something else involved, like the office lighting. > THat would be difficult to wear contact lenses just for close up work then > keep taking them out. IIRC, your prescription was low minus and low astigmatism, something usually recommended for far vision, not especially for near vision. > That sounds weird. The sensation is there with or without glasses (only at > work) and the prescription is very minimal as far as I can tell... and > I've never had this sensation before! With or without the glasses! Then all my expostulating about barrel distortion was irrelevant. > No, i think the edges are straight. Although I do sense ripples in the > paper a bit too easily that it's distracting. Then barrel distortion has nothing to do with it. > I think I meant here sorry, it's MORE than just fuzzy text... > That sounds like the thing actually... letters seem to stand out, which is > probably why Im getting freaked out since I know the things are on the > paper, I know the writing is on the board and I can't correlate the two... You lost me there. > Im looking at some fuzzy text at home of a scan I made of a piece of > paper, and that looks fine... that's why I say it's more than just fuzzy, > or blurry text... I think the standing out and the 3-D off the page might > be great explanation. Some glasses can produce a color distortion that might give a 3-D effect. But if you're getting the effect without glasses, again I'm stumped. > No disorders? Oh great, please don't tell me Im imagining it... Mind you, > known optical phenomena... does that mean I should switch back to a CRT at > work? I've read about contrast sensitivity, maybe I should change my > monitor contrast and brightness settings??? I don't think you're imagining it. I just don't think it signals anything ominous. -MT >> I hope not. I only seem to be getting these issues at work. I can >> sit in front of my lovely CRT monitor at home all day, then look at [quoted text clipped - 3 lines] > I've never heard of LCD monitors "causing" such symptoms. There might > be something else involved, like the office lighting. I know. That's the thing that's so confusing. I might agree with the lighting, because me and fluorescent tubular lighting have never got on well with me, they always give me headaches and mess around with my vision, but I've never noticed what Im experiencing before, and I know they havent changed the lights in my absence. Which is why Im inclined to believe it could be some freaky thing to do with the monitor. But the monitor looks perfect. >> THat would be difficult to wear contact lenses just for close up >> work then keep taking them out. > > IIRC, your prescription was low minus and low astigmatism, something > usually recommended for far vision, not especially for near vision. Here is is again, just in case: May 2005: Right Distance +0.50 Sph, -0.75 Cyl, 135 Axis Left Distance +0.75 Sph, -0.50 Cyl, 35 Axis >> That sounds weird. The sensation is there with or without glasses >> (only at work) and the prescription is very minimal as far as I can >> tell... and I've never had this sensation before! With or without >> the glasses! > > Then all my expostulating about barrel distortion was irrelevant. So barrel distortion is a glasses-only phenomenon? >> That sounds like the thing actually... letters seem to stand out, >> which is probably why Im getting freaked out since I know the >> things are on the paper, I know the writing is on the board and I >> can't correlate the two... > > You lost me there. Sorry, started thinking about the ride at Universal Studios, where you're on the studio backlot tour, you go through a tunnel, and the tunnel starts revolving, though the track stays where you are, and what you see, isn't actually what's happening in the physical sense... >> Im looking at some fuzzy text at home of a scan I made of a piece >> of paper, and that looks fine... that's why I say it's more than [quoted text clipped - 4 lines] > effect. But if you're getting the effect without glasses, again I'm > stumped. I realise Im really starting to get clumsy with my wording... Ok... see if I can better summarise. So after an hour of looking at the computer monitor without glasses, my vision on the printed or written word appears sort of, well, I've learned it's not distorted. It's true it would be blurry, black appears grey, ink scribbles blur and blend into each other, maybe to give the impression of being blurry. But it's not just that it's blurry. I would have described it as being like I've scanned something into the computer and printed on low quality, but here I am, at home, looking at a scan, and apart from it being blurry (due to the low quality), it appears fine. (getting confused again). At work however, different scenario. It's not that it jus appears blurry, but it seems to take on some 3D aspect, with almost a colour bleed (on black text, appearance of orangey hues around the outside, though I could be mistaken), and maybe the sense that what is on the paper, isn't on the paper. This is frustrating me, and probbaly isn't helping you, guess I'll have to wait til Im back at work to give you a better description. I wonder though if there's anything about "depth perception". But something interesting, don't know whether it's worth mentioning, my sister just bought herself a pair of "pin hole glasses" I dunno. I tried them for a couple of minutes, really hurt my eyes, but I got the sense my right eye was stronger than my left, and I may as well not have a left eye in those glasses as it didn't seem to be being used unless I concentrated. >> No disorders? Oh great, please don't tell me Im imagining it... >> Mind you, known optical phenomena... does that mean I should switch [quoted text clipped - 3 lines] > I don't think you're imagining it. I just don't think it signals > anything ominous. I hope not either. But it doesn't sound like a typical optometry problem does it? And I certainly don't have any hope in hell of explaining it. Grrr. Sorry about that, but thanks for your reply. If you can think of anything at all, let me know. One thing I've omitted (because Im not sure if it's the case, Im not sure of anything anymore to be honest), but, after I put on the glasses, my vision would be fine, the text on the paper would be crisper and sharper, but that weird sense would develop a while later that the text wasn't sitting on the paper... even though my vision was sharp. Ahem. Guess it's sounding even more bizarre now. Cya Simon >So after an hour of looking at the computer monitor without glasses, my >vision on the printed or written word appears sort of, well, I've [quoted text clipped - 12 lines] >though I could be mistaken), and maybe the sense that what is on the >paper, isn't on the paper. Sounds a bit like scotopic sensitivity except it's doubtful that you'd notice it first time at this age. Ann > Sounds a bit like scotopic sensitivity except it's doubtful that you'd > notice it first time at this age. > > Ann Just having a look at that now. Don't rule anything out with me. According to the dermatologist, I have a skin condition that's more in tune with old ladies. I have Lichen Aureus, which is one of the Pigmented Purpuric Dermatosis, which is basically capilliaritis, couple that with my hypothyroid condition, and the fact that Im now on the same acid indigestion tablets as my grandmother, lansoprazole, don't rule anything out just because Im young. It does sound rather interesting... it talks about Light Sensitivity which I feel I have, but I don't think I have issues with contrast (ie the LCD is bright white, the paper is a paper white colour, and the LCD I can view fine). Maybe I do and don't realise it. There's no restricted field of clear vision, as far as I can tell, Depth Perception appears fine at night. But I'll look out for that. but again, it's just odd that it happens just at work, under fluorescent lights and LCD monitors, and since I've been two and a half weeks off. I've used LCD Monitors under Fluorescent conditions before. Maybe there's something to do with how I had time off? I ended up going in for minor surgery on my toenails, ended up getting an infection, ended up going on antibiotics for a a week I think it was, Fluxc... something or the other. Im also on Lansoprazole and Thyroxine. Cya Simon >> Sounds a bit like scotopic sensitivity except it's doubtful that you'd >> notice it first time at this age. [quoted text clipped - 30 lines] > >Im also on Lansoprazole and Thyroxine. It's usually as a child that you would notice scotopic sensitivity first. My daughter has it along with dyslexia and it first showed itself with her failing the depth perception type sight test at school. She was given a coloured overlay which didn't do much for her but I now suspect that the optician who saw her wasn't really qualified to test for it. Maybe your being a bit run down with the infection etc has meant that you notice it now for the first time. Tiredness and illness can bring out the worst. Alternatively, most drugs can have visual disturbances as a side effect so it could be something to do with that. Ann > It's usually as a child that you would notice scotopic sensitivity > first. My daughter has it along with dyslexia and it first showed [quoted text clipped - 11 lines] > > Ann Thanks for the info. It's just frustrating that it's just under a very specific set of conditions. See what the doctor says tomorrow. And I'll post the info here. Thanks Simon >> It's usually as a child that you would notice scotopic sensitivity >> first. My daughter has it along with dyslexia and it first showed [quoted text clipped - 16 lines] > >And I'll post the info here. Good. It will be interesting to hear what the doc says. Ann >>>It's usually as a child that you would notice scotopic sensitivity >>>first. My daughter has it along with dyslexia and it first showed [quoted text clipped - 20 lines] > > Ann My GP didn't suggest much, but instead of going to a regular chain optician like SpecSavers, he suggested an independant who really knows their stuff etc.... So that's fine by me. Cya Simon |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.