Walmart uses reputable (outside) labs and uses NIKON lenses
Weird issue with new glasses? Can I return these?
- Thread starter The motor guy
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Yeah they didn't mention what type they were. It didn't cost much for them. It was like $69 for the glasses. Then another $60ish dollars for them to put the prescription in.
Even for people not needing external lenses, the eye itself is very imperfect as a camera. It depends on a lot of correction by the brain to present a perception of a flat, undistorted world. Changing the external lens does require a learning period to establish a new correction. A simple single lens like glasses makes a terrible camera for film, but it works with a person because of the brain.
I've never used contacts but most people either use glasses all the time or contacts all the time and don't switch between them.
I've never used contacts but most people either use glasses all the time or contacts all the time and don't switch between them.
Nature of the glasses, esp with stronger RX, now see what happens to traffic light when you move head to left or right a bit, you may see light going in opposite direction or following head move. You may find that green light goes in opposite direction vs red light too.
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For years my eye doctor recommended I get some glasses to give my eyes a break from contacts so I didn't need to have them in so long
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Amazing how half the people say it's normal, the other half say something is messed up
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Is that a permanent thing or is that something that will correct itself too?
you can also get "used to" not having arms or legs.. doesn't mean it's perfect though. I bet if you go back to the eye doc at walmart and tell them what you're experiencing and mention base curves of the lenses.. you'll get it corrected. and I did have a laugh half say it's ok, half (including me) said something wrong.. lol..
And yes I agree to give your eyes a break from contacts, that's always a good thing to do.
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What is base curve? I looked at them and the entire lense is a concave shape
you can check my previous post, but look at the side of the front of the lenses, not the concave back side. The front side, looking from the side edge, looking towards the bridge (where your nose goes).. look at the shape/surface of the lens, is it flat? Or is it curved? If it's almost flat that's called Plano or Zero curve. I'll paste what I wrote before..
"
if you don't have the base curve of the outside part of the lens correct you will get a sort of "fun mirror" at a carnival effect. You can call it a "Fisheye" sort of view. It is caused by the curvature of the lens affecting the speed of the light meeting the curvature of your cornea as it comes into your eye lens (crystalline lens).. the retina picks this up as an optical illusion and you get the headaches and dizzy.
There is nothing to get used to, it is not correct and I'm betting if you looked at the front of the lenses you'll see (from the side edge) that they're almost perfectly flat. Many opticians have NO clue about base curves and give everyone what they call Plano lenses or 0 base curve. "
They need to check that, because that is what can cause the issue you're experiencing. Even with a single vision (no bifocals, trifocals, progressive just regular glasses) at a -4.75 power you can have issues with the base curve, some eyes are not sensitive to it, other people's eyes are.
EDIT: I re-read my quote and I have to add, the curve of the front side of the glasses lens will affect the speed of the light passing through the lens to your cornea. The curve of that lens needs to meet the curve of your cornea so that the light passes through to what your cornea was designed with. Anything different and you get the weird "Fun mirror" effect.. You can get used to it but it's not correct and they can make a pair of glasses that won't give you that, just good vision..
The 'movement' you described is gonna stay but you won't notice it after a few days of wearing glasses on daily basis. Your brain will ignore it and you're not gonna notice it anymore unless they really messed up with prescription and optical lens' center. Contacts are always a better choice for optical 'perfection', not everyone can wear them daily thou, I tried a few times (not few days) but eyes would get irritated after a few hours and I'd have to switch to glasses so I gave up. Well, I'm used to glasses, wearing since I was 5 y.o. I'm actually so used to wearing glasses that my face feels 'naked' without them; even when I was wearing contacts I'd wear my Rudy Project with plain clear lenses.
I know the Nikons should come with a cleaning cloth, small bottle of cleaner, and a small card that's maybe a warranty or registration thing and will indicate the glass/lens manufacturer. WM has some brands that may be their own or exclusives but they also sell popular frame brands like Ray-Ban, Nike, Guess, etc. Consider yourself lucky that your lenses were only $60 ! Mine cost $400+ just for the lenses.
Not sure that your math is quite accurate....
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Actually it's at like a -5.50 for the glasses. My contacts are only -4.75. I do believe they are mostly flat looking at the outside, but I don't have them in front of me right now.
I also experience the same thing. I've worn contacts for over 10+ years and have a pair of glasses in case of emergency.
The thing with my contacts vs glasses is my eyes are really bad (legally blind without them) and my contacts can only do so much. The glasses are much powerful and give the full 20/20 vision. Just something I deal with.
I VERY rarely use them so I never went back and got them modified. They're good enough to drive home (keep them in my work lunchbox) if I have a contact issue.
The thing with my contacts vs glasses is my eyes are really bad (legally blind without them) and my contacts can only do so much. The glasses are much powerful and give the full 20/20 vision. Just something I deal with.
I VERY rarely use them so I never went back and got them modified. They're good enough to drive home (keep them in my work lunchbox) if I have a contact issue.
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Oh you aren't doing any driving with nine. That's what I was about to do when I first put them on, but quickly realized how messed up they were.
Well if they're that bad, then yea they need adjusted. Mine isn't optimal, but will get me the 17.9 mile trim home if need to be.
My interest in optics is mostly amateur astronomy, but when I needed glasses at age 40, I was able to use my knowledge to get what worked best for me.
My prescription is +2.25, yup, you read that right, I need reading (magnifying) glasses to see distance, and double reading glasses to see close. Without glasses/contacts, nothing is in focus.
All lenses distort the image in the manner that the OP describes. It is both annoying and has caused me some problems. As the glasses change the size of the image, making me think the curb is farther than it is. As a race car guy, capable of reasonable driving precision, this infuriated me to no end. The wheel repair guy and I were on a first name basis from so many curb hits.
Switching to Clariti daily contacts (ultra thin and perfectly clear) solved all of the issues and I only wear glasses now to let my eyes get some oxygen.
There is a lot more to the story but I simply wanted to mention to the OP that looking through any form of lens is going to introduce distortion. That distortion is most evident when moving one's head around.
My prescription is +2.25, yup, you read that right, I need reading (magnifying) glasses to see distance, and double reading glasses to see close. Without glasses/contacts, nothing is in focus.
All lenses distort the image in the manner that the OP describes. It is both annoying and has caused me some problems. As the glasses change the size of the image, making me think the curb is farther than it is. As a race car guy, capable of reasonable driving precision, this infuriated me to no end. The wheel repair guy and I were on a first name basis from so many curb hits.
Switching to Clariti daily contacts (ultra thin and perfectly clear) solved all of the issues and I only wear glasses now to let my eyes get some oxygen.
There is a lot more to the story but I simply wanted to mention to the OP that looking through any form of lens is going to introduce distortion. That distortion is most evident when moving one's head around.
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For what it's worth I never noticed an issue back when I was 10 years old. I do now noticed the issue with my contacts, if I'm actually looking for it, but even then the object may only move like 1/2" not an entire foot like with these glasses. The glasses actually are sharper than the contacts as long as I keep my head in a vice and don't move
Don't forget, contacts can sometimes swim around on your eyes when looking around.
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I've worn them for 20 years. Maybe initially when you put them in for a minute or two, but otherwise no.
