It could be that you need to get used to the glasses. Generally, contacts give you better vision because they are closer to your eye. However, if you still have problems with the glasses after a day or two of wearing them, I'd call the eye doctor.
2007-10-20 16:43:30
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answer #1
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answered by motorgirl56 3
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Here is a 'way' you might think about it.
A spherical lens, such as a magnifying lens, is thin in the outside and thick in the center. If it's a 'negative' lens or a concave lens, it's thin in the center and thick on the outside. Either way, the lens bends light.
Take your glasses and hold them out about a foot or two. Move them back and forth. What you'll see is that the image in the lens seems to move faster, one way or another, than the speed you are moving the lens itself.
This 'with' or 'against' motion is used by refractionists using a retinoscope to 'neutralize' the lens.
When you put a 'new' pair of glasses on, and then move your head, there's a relative movement of the 'world' which isn't the same as without glasses. This makes us feel dizzy. You should see how dizzy people with bifocals or trifocals or progressive lenses feel when they first get their lenses. With them, the bottom part of the world moves a LOT faster than the top so they feel the world is spinning....ergo..feeling of dizziness or nausea.
Every time you get a new pair of glasses, in a new type of frame, the world will shift a little differently and it'll take you about a week or so to get used to them. For progressive lenses, it can take a MONTH.
If the pupil center of your eye matches the center of the lens, you'll see normally. But if the center of the lens does NOT line up with your pupil, then you'll be looking through a part of the lens that will act like a prism and shift the image off to the side or up or down or ?...that will cause a pulling on the eye muscles as they try and keep the images of both eyes 'together' or fused. This can cause some fairly significant headaches and other symptoms.
Give yourself some time. If it doesn't get better, take them to the optician and have him/her check to see if things are aligned correctly, that the right lens is in the right frame, not the left part of the frame. Sometimes we do get things backwards. It's fixable.
2007-10-21 05:54:15
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answer #2
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answered by ? 5
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There's every chance that they aren't bad glasses, but they correct the eyes in a slightly diferent manner to contacts and the eyes need to adapt to this.
It usually only takes a few days, and provided the glasses are worn occasionally, the brain keeps both the contact using and spectqacle using programs "on file" and swapping from one to the other becomes less troublesome.
Because the glasses Rx is slightly distant from the eye, and doesn't move with the eye's movements, the eye muscle coordination is slightly different. from that with contacts withthe samer effective Rx. The stronger the prescription the more noticable this tends to be.
It's a bit like driving two cars, with slightly different pedal and indicator positions... Neither wrong, but the more familiar will always tend to feel more "natural"
(If it doesn't settle within a week, that needs reporting so a re-check can be arranged. But even there it's not necessarily the glasses. It could be your contacts that are th eunderlying problem)
2007-10-20 20:25:05
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answer #3
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answered by Pedestal 42 7
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I truthfully simply did this myself. My common hair colour is a soiled blonde and I have inexperienced eyes, and I were wondering going darkish for a even as. So i dyed my hair a dismal brown chestnut colour. I like it. It makes my eyes pop. My idea is to visit a salon. To make my colour keep they needed to double system it (dye it one colour, then a darker colour over). This prevents fading, and brown dye fading on blonde hair can seem gray or inexperienced (no longer wonderful). My eyebrows have been a bit of mild however a ninety nine cent brown eyeliner did the trick. Take the chance, a dismal brown colour could be a laugh to take a look at.
2016-09-05 17:56:14
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answer #4
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answered by boyes 4
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If you are myopic (short-sighted), then glasses will have a greater power than your contacts and usually it may take a while to get used to. If this doesnt happen for a while then go back to your optometrist to have everything re-checked.
It's the opposite case with the power difference if you are hyperopic (far-sighted).
2007-10-20 16:54:10
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answer #5
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answered by Eden K 2
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