How Do I Know if my Glasses Prescription is Wrong?

Okay, so you have that nagging feeling that something isn’t quite right with your new glasses. Your vision isn’t as clear as it should be, or things are appearing fuzzy and indistinct. You may be experiencing a sense of tunnel vision. Perhaps your depth perception is just a little bit off.

Is Your Glasses Prescription Wrong?sunglasses, eyeglasses, prescription sunglasses, prescription eyeglasses

You know from experience or you’ve been told by your optometrist that some prescriptions, especially bifocals or trifocals, require an adjustment period during which you need to get used to the changes of a new prescription. This transition period can last (depending on the prescription and the individual) for days, weeks, even upwards of a month. So how can you tell if your vision inconstancies are related to this adjustment period or are instead a result of an incorrect prescription?

The answer typically lies in the symptoms you experience and their severity.

Errors made during an eye exam are not unusual. They can result from a typo on a computerized report or, more commonly, a misreading of a handwritten prescription. The misinterpretation of a single digit – or the omission of one – can wildly alter a prescription. Sometimes incorrect measurement readings are to blame and these are not always the fault of the optometrist. Perhaps, without realizing it, you’d scheduled your exam late in the day, maybe after work, and your eyes were tired and weak, skewing your results.

If your symptoms include the following, you may want to return to the optometrist for advice or at least a confirmation that no clerical error in your prescription was made:

  • Extreme blurriness or lack of focus.
  • Poor vision in only one eye when the other is closed.
  • Headaches or dizziness caused by excessive eye strain.
  • Extreme vertigo or nausea not related to any underlying medical condition.
  • Problems persist despite the fact that the lenses are properly centered in front of your eyes.
  • Problems persist despite waiting out the recommended adjustment period.

It’s true, however, that if your prescription has changed or you’ve switched to bifocal, trifocal, or progressive lenses, your eyes do need to adjust – particularly if the prescription strength in only one eye has changed. If your symptoms most closely follow the ones below, your problem may simply be caused by the change in prescription:

  • The blurriness or fuzziness you experience improves with time.
  • You haven’t been using your new glasses on a regular basis.
  • Headaches, dizziness, nausea, or vertigo lessen the longer you wear your glasses, or subside greatly after the first few days.
  • Vision is clear when each eye is isolated.
  • You haven’t yet completed the transition period suggested by your optometrist.

Realize that you know yourself better than anyone else. You know how your eyes react to typical daily eye strain and what they feel like when you’re tired. If you can rule out these conditions, and you’ve been patient with any change in corrective lenses and given your symptoms the prerequisite amount of time to clear up, the fault may lie in your glasses and not in yourself. If you have any cause to suspect this is the case, a follow-up visit to your optometrist is certainly warranted and definitely recommended.

56 Responses to How Do I Know if my Glasses Prescription is Wrong?
  1. Lillian Schaeffer
    April 19, 2017 | 2:20 pm

    I like how you mentioned that headaches caused by eye strain can indicate that your glasses prescription could be wrong. I’ve had my glasses for a while now, but I’ve noticed that things are a bit blurrier than normal, and I get headaches really frequently. It sounds like my prescription may be outdated, so maybe it would be a good idea to visit an optometrist and get it updated.

  2. benedict
    May 11, 2017 | 7:01 pm

    hie i reecenlty changed my specs after they had expired but i went for about 2 months without any specs while i was waiting for a new pair. THe new pair am using right now, my left eye sees more clear than my right eye when i close one eye. I also get a bit of eye itching inmy right eye. Is there need for me to visit a Dr or my eyes are just adjusting.

    • Ryan Phillips
      June 6, 2017 | 1:13 pm

      Hi Benedict,

      It’s possible you may need to adjust to the new glasses. If you continue to experience issues with your eyes after a couple weeks time, then I would follow up with your eye dr again.

  3. Daniel
    August 13, 2017 | 1:37 pm

    Hi, i just wanna ask about my problem. I am prescribed to wear eyeglasses when I was in college. When i start to work I often or almost not used my eyeglasses with me. It seems im okey without using them. Now, I have under several medical requiremwnts for my new job yet I have this feeling like I’m having vertigo or dizziness. I am now using my old eyeglasses but I still feel the same.
    Jelp me please.

    • msatghare
      October 17, 2017 | 3:51 pm

      Hi, I would suggest to go to your eye doctor and have your vision evaluated.

  4. Lee
    August 13, 2017 | 5:02 pm

    I just recently got new glasses after wearing my old ones for about 7 years. I’m having trouble adjusting to the new ones. The frame style did change (from a narrow to the more larger frames they are making now) but my prescription only changes slightly (one eye improved one got slightly worse). Close up is fine but the minute that I look more than a few feet away things get a little off – look out of focus and the floor looks like it is bowing up in the middle.

    I’ve been in twice and they keep saying I need to let my eyes adjust but I feel unsteady on my feet when wearing them. I did get a second opinion who said my center is slightly off but just at the border of the range permitted.

    My prescription is big so I am in hi-index (-6 with astigmatism and -6.25). Should I go back to the narrow frames? I looked for a while and can’t seem to find any.

    • msatghare
      October 17, 2017 | 4:21 pm

      There is an adjustment period when it comes to glasses. Usually about 2 weeks. If there is any curve to the lens that can present an issue for higher prescriptions. If that is the case you should change frames.

  5. Chrissy
    August 26, 2017 | 7:17 pm

    Hi, I got my new glasses a few days ago. The new glasses seem to have lense power slightly weaker than the previous ones. I do not see smaller letters from afar as sharply as the first. I’m wondering if that’s going to affect my vision somehow. Surprisingly, an optometrist once told me while doing eye examination that I didn’t need to see the last letters clearly. Is that true?

    • msatghare
      October 17, 2017 | 3:49 pm

      Hi, You do need to go back and have your prescription rechecked. You should be able to see the smaller letters from afar just as you did earlier.

  6. Vladimir
    September 10, 2017 | 7:24 am

    I have made some new glasses for the first time in a coulle of years. I have – 1.25 on the right eye with astigmatism, but see crystal clear with the left one. My prescription although greatly improves my eyesight, only with my right eye there is still some blurriness and it makes the eye feel like it doesn’t belong there. Should I go to the optometrist again or it is normal for these differences. Note: I have them for about a week.

    • msatghare
      October 17, 2017 | 3:44 pm

      Hi, You need to go back to your eye doctor and have your eyesight checked again!

  7. Jeff Smith
    October 6, 2017 | 8:34 pm

    I just picked up two sets of glasses–prescription clear and sunglasses. They are both progressive lenses. I noticed something different/not right? with the sunglasses with the right eye. The clear seems better. So I looked at the prescription and the order. I noticed that my doctor prescription says pd 63. The order said: R 29.5 and L 29.5 for dist pd. Is that ok or is something amiss? I suppose I need to wear them for a while to see how I adjust.

    • msatghare
      October 17, 2017 | 2:51 pm

      Your pupil distance is made larger than what it should be. You can try to wear them and see if you adjust, but you may need to bring them back to where you had them made at and have them corrected.

  8. Bob
    October 11, 2017 | 9:52 pm

    I switched to single vision prescription sunglasses recently. Looking forward everything appears fine, however, if I look down when walking the ground appears much closer than it is. I do not have this problem with my regular glasses. My regular glasses have more of a straight lens than my sunglasses, which are somewhat a wrap-around. However, I have an older (and broken) pair of RX sunglasses (progressive lens) with wrap-around lenses that did not have this issue. Could the RX be too strong, hence the ground looking too close when walking, or could it be the curvature of the lenses?
    Thanks for any insight you can provide.

    • msatghare
      October 17, 2017 | 2:50 pm

      Did you buy the glasses from us? If so, then I would call our customer service team at 866-653-5227 and they will be able to assist you. If you bought them somewhere else I would take them back and have them check the prescription.That is always a good first step. A wrap around frame can cause the prescription to “curve” and it might become distorted. Your best bet is to take the lenses back to where you got them and have them check the prescription.

  9. Shahbaz
    October 21, 2017 | 5:36 am

    My optical shop made 0.25 spherical power error ,my no was 2.5. He made 2.75 should I make it correct or its OK plz reply soon

    • msatghare
      October 24, 2017 | 8:22 pm

      Hi Shahbaz, Yes we recommend you get your lenses corrected.

  10. Julia
    October 21, 2017 | 1:26 pm

    I got new glasses made by a optical chain here in Australia about a month ago, my prescription only changed in my left eye from SPH +6.00 to +5.75 and CYL from -3.00 to -3.25 the Axis stayed the same at 41.

    When I tried the new glasses on and looked slightly down and to either side everything was blurry. The glasses were checked, the prescription was correct. I had my eyes rechecked and that was the same as well. The optometrist suggested changing the eye measurements for the glasses. However when he handed me off to retail staff, I was told they were going to remove the vertical measurements.

    I got the glasses remade and tried them and although the blurriness has improved, they feel ‘off’ and I don’t feel comfortable and I noticed that when I close one eye, my vision isn’t sharp in one eye, and vice verse with the other eye. Could there be any possibility that my script is incorrect or could the quality of the lenses they use be the problem? (They are 1.74 index)

    • msatghare
      October 24, 2017 | 8:26 pm

      Hi Julia,
      If it’s a progressive bifocal the sides aren’t going to have a prescription in them. If it’s single vision it’s possible they did mess up and I would recommend getting a second opinion.

  11. Sam
    October 24, 2017 | 9:36 pm

    I just received my new prescription glasses yesterday and I’m slightly concerned it’s not correct. My right eye is slightly blurry when isolated. Should I wait a while and see if my eyes adjust? Or should I get it rechecked?

    • msatghare
      October 25, 2017 | 2:37 pm

      Hi, I would advise you to have them rechecked.

  12. Sum
    November 8, 2017 | 2:30 am

    My husband & I just had our eye exams with a new Dr. I have been wearing glasses for 22 years and the new doctor told me my prescription is a -1.75 and I have been wearing -3.50 in various glasses for the past 12 years. It did seem the -1.75 looked clear when the exam was being done. I have a weird feeling about everything as the Dr visit took 3.5 hours.
    My husband went from a -4.50 to a -8.50 in just 2 years. This seems drastic! He normally only fluctuates by -.25 in 2 years.
    What do you suggest? Should we get a 2nd opinion before filling these new prescriptions or trust this new Dr.?
    Thank you very much

    • jsiddiqui
      November 8, 2017 | 3:24 pm

      Hi there, yes I would recommend getting a second opinion before getting your glasses made!

  13. Mbarr
    November 9, 2017 | 3:43 pm

    i am not sure if my new prescription is accurate. I am not familiar with reading prescriptions so i could be wrong.I am on day #2 of my new glasses and i have been getting headaches. Listed below are my previous and new prescriptions, is this an increase or decrease?
    Old prescription:(sorry i typed it wrong on the other post, the one below is correct)
    OD -10.25 -2.00 180
    OS -10.25 -1.75 010

    New prescription
    OD -9.25 -1.75 x005
    OS -10.00 -1.75 x10
    PD 58/54

    • jsiddiqui
      November 13, 2017 | 6:35 pm

      Hi there,
      Your right eye has gotten much better and the left eye is somewhat the same.

  14. Alika
    November 23, 2017 | 7:34 am

    Hi I have been advised by my optometrist to update my glasses in Sydney Australia. they have given me anti glare invisible uv dual side-p ( sorry I don’t understand it’s details properly)costed around$600. but when I tried them on I did not feel any difference between them and my old glasses. I mean they give me same vision as my old pair of glasses . I don’t know my prescription is not correct or something else. Could you please advise me what should I do?

    • jsiddiqui
      November 29, 2017 | 4:13 pm

      Hi Alika,
      Wr recommend that you get a second opinion from another doctor and also have your glasses checked.

  15. Tim
    November 28, 2017 | 4:34 pm


    I would like to learn the differences of these two prescriptions:

    Sphere Add Distance(?) Intermediate(?) and reading (?)
    OD +0.50 +2.50
    OS +0.50 +2.50

    OD +0.75 +2.25
    OS +0.75 +2.25

    What are the power for Distance, Intermediate, and reading (separately)?

    And it’s interesting that mostly the pd measurement results are different at different optometry?
    31.5 / 29, 31.5 / 29.5, 31/29.5, 31/29
    any suggestion?

    I went to local optometry to get eyes example and just got a pair of progressive lenses(later, I have learned that they gave me a 6-7 years type of lenses – Varilux Physio).
    When I got it and then I went back and have it redo, because it was blurry (intermediate), and changed power to Sphere 0 Add +3.00 both sides (previously +2.50). But the 2nd time is still blurry, I still have to move my head up, using reading bottom part to work on computer – SO I have wasted $$ (only 2 chances they offer). With the single vision I used +1.75 is good.

    The frame size is: 51 / 14

    Any suggestion is very appreciated


    • jsiddiqui
      December 1, 2017 | 3:27 pm

      Hi Tim, these are incomplete prescriptions, please see the example below

      Sphere Add Distance(?) Intermediate(?) and reading (?)
      OD +0.50 +2.50
      OS +0.50 +2.50

      OD +0.75 +2.25
      OS +0.75 +2.25

      What are the power for Distance, Intermediate, and reading (separately)?


      OD -3.00 -0.25 121 OD -2.00 -0.25 121 OD -1.00 -0.25 121

      OS -2.50 -0.25 067 OS -1.50 -0.25 067 OS -0.50 -0.25 067

      ADD +2.00 SH## PD ## * ADD +1.00 SH## PD## No ADD

      *(Optional if near vision needed)

      And it’s interesting that mostly the pd measurement results are different at different optometry? Those difference are minor and can be attributed to equipment or practitioner variations. Not enough to make a difference
      31.5 / 29, 31.5 / 29.5, 31/29.5, 31/29
      any suggestion?
      Those difference are minor and can be attributed to equipment or practitioner variations. Not enough to make a difference

      I went to local optometry to get eyes example and just got a pair of progressive lenses(later, I have learned that they gave me a 6-7 years type of lenses – Varilux Physio).
      When I got it and then I went back and have it redo, because it was blurry (intermediate), and changed power to Sphere 0 Add +3.00 both sides (previously +2.50). But the 2nd time is still blurry, I still have to move my head up, using reading bottom part to work on computer – SO I have wasted $$ (only 2 chances they offer). With the single vision I used +1.75 is good. The frame size is: 51 / 14

      Bifocals can be problematic. People in the business usually opt for individual single vision glasses set for the distances they want to use.

  16. Semone
    November 30, 2017 | 2:16 am

    Hello, I’ve been to an optometrist in Mount Barker south of Adelaide (in my early 30′s) and was given R -0.75 and L -0.50 for the first set of focus (unsure the technical names) and was told not to get a reading pair because he wanted my eyes to keep on using the muscles (possibly same with the second set of focusing). I also chose wrap around sunglasses with No1 tint for inside and No3 tint for outside (which somehow was accidentally made brown). Now in my late 30′s come 40′s I found the optometrist in midland Western Australia has given me R -0.25 for the first focus and -0.50 for the second focus while L is 0.00 for the first focus and -0.25 for the second focus. Again I chose wrap around sunglasses with Grey Grade1 tint for inside and polarized Grey Grade2 for outside. I found that my left eye is way out of focus along with a very noticeable “double” when using one eye while my right is almost the same as my old prescription. polarize seems to cut the glare yet shimmers like rainbow cellophane when looking at various objects (even ones without any glare/reflection). without glasses My right eye sees a noticeable “double” of any object. With the old prescription it is less but a little more with the new prescription. Both of my eyes still have a distaste towards brightness and a little more since getting polarized grade2 grey (apparently the tint law has change within the past 7 years). I am currently trying the two week adjustment faze hoping it wont ruin my eyes.

    • jsiddiqui
      December 1, 2017 | 5:30 pm

      Hi Semone, I would recommend that you go for a second opinion with another doctor to make sure your prescription is right.

      • Semone
        December 1, 2017 | 6:02 pm

        I agree, Not even two weeks and already freaking out, feel like I’m loosing my sight (as I need it to see my artwork, reading etc). The mount barker optometrist maybe right, keep on making my eyes work and not get a prescription that has the stigma thing or even reading kinds. Besides I found nothing wrong with old prescription except that the outdoor tint was fading and frames were loose and beginning to break.

  17. Evy
    December 1, 2017 | 10:01 pm

    I just got new glasses 3 days ago, my old rx was 1.00 ( I can’t see far) my new ex is 2.00 & 2.25
    The issue is I can’t see that well close up with my new glasses it takes a minute to actually focus and everything looks closer then what it actually is.. Far everything looks clear ( especially when I’m outside and everything is far away) but I still can’t see very clear a sign with letters that’s far away.
    I dont know if something’s up with my new glasses or I need some adjustment period. Please advise. Thank you!!!

    • jsiddiqui
      December 4, 2017 | 5:21 pm

      Hi there, I would suggest you give it more time. They say it can take a week or 2 to adapt to your new prescription, especially if it’s a big change like yours. If the problem persists after a couple of weeks you should go back to your eye doctor and have your prescription reevaluated.

  18. wendy
    December 5, 2017 | 7:44 pm

    Got a simple question for you: I had two pairs of glasses made, one for dressier occasions and one for work. They were progressives. I destroyed the pair I had for work and went to have a replacement pair made and was told the prescription was out of date and it was time for a checkup anyway so I went in. Doc told me my script had changed ever so slightly so I picked out frames as close to what I had previously had and had them put in the updated script. When I went in to pick them up I was surprised at the blurriness. They are only slightly stronger than my old glasses but the difference is noticeable. I assumed, maybe incorrectly, that things would be immediately sharper. I only have about two weeks left on my 30 day guarantee but I’m already thinking of taking them back and seeing what is what. Any advice?

    • jsiddiqui
      December 6, 2017 | 4:54 pm

      Hi Wendy,

      It is normal to have an adjustment period for a new pair of glasses, but they should not be blurry.I advise you to take your glasses back and have them rechecked and your prescription reevaluated.

      • wendy
        December 7, 2017 | 10:53 pm

        Thank you for the response! I did indeed go back yesterday and ask for help and they are going to recheck the latest script. I figured yes, since there was a slight difference in the lens size, then there would likely be a difference in where the different fields were as in “where to point your nose” when you were looking at objects at differing distances. However it still didn’t matter, nothing was as clear as it appeared in my old glasses.
        Appreciate the input!

  19. emir magana
    December 11, 2017 | 9:07 pm

    Hello, I just got some new eyeglasses, but I have a problem , I don’t know if it’s just my eyes or etong prescription. When I look straight infront of me at like a sign I see the writings a little blurry, but when I look at it from the corner of the glasses I see clearer and when I take them off I see much clearer infront of me, what should I do? Should I recheck or what should I do?

    • jsiddiqui
      December 18, 2017 | 3:24 pm

      All new glasses take some getting used to, I would give it a couple of weeks. If you do not see any changes after the adjustment period, I recommend you go back to have your eyes rechecked and get the prescription reevaluated to make sure it matches.

  20. emir magana
    December 11, 2017 | 9:10 pm

    Close infront of me I see clear but when i try to read something far away it looks blurry w the glasses but when I take them off it looks much clearer

    • jsiddiqui
      December 18, 2017 | 3:27 pm

      If your glasses are new, I suggest you give them a couple of weeks adjustment period. If not, I would suggest you get your eyes checked and prescription reevaluated.

  21. Polly
    December 20, 2017 | 1:33 am

    Howdy, I have new progressive lenses that were remade twice because they said the PD distance on the right lens was off. This manifested in me having to turn my head to the left whenever reading something. Now with the third pair I still have to turn my head to the left but only when the text is on the right, I don’t have to turn my head when the text is on the right. So any advice or reason for the need to move my head in one direction? A really bad lens lab, maybe?

    • Polly
      December 20, 2017 | 1:37 am

      Sorry, I meant that now with the third pair I have to turn my head to the left when the text is on the Left. But I don’t have to turn my head when the text is on the right.

    • jsiddiqui
      December 20, 2017 | 3:02 pm

      Depending on the frame you picked and your PD, the pupil distance could be too small for the frame. So the lab that made them is moving the PD out to make it work with the progressive. I would recommend that you go back to where you got them and have that looked into.

  22. Buchito
    December 20, 2017 | 7:53 am

    I just got my eye glasses today. My prescription is as follows:
    OD +1.75, -1.00, 180
    When put the glasses on, when I look down or up objects are in angle. When look down, the left side of the object is higher and the right side is the same. When I look up, the left side is lower and the right side is the same. When I look on a rectangular object, the left side is less wide and the right side is normal. Same happens when read any texts.

    • jsiddiqui
      December 20, 2017 | 3:22 pm

      Hi, do you have a bifocal lens?

  23. Melanie Hernandez
    December 22, 2017 | 1:17 am

    Hello, I recently had my eyes checked at my logical eye center. I can’t see far away with my new glasses. Also I been getting really nasty headaches. Should I visit my eye doctor again?

    • jsiddiqui
      December 27, 2017 | 6:55 pm

      Hi Melanie,
      Yes, definitely get a second opinion and have your glasses checked too.

    • jsiddiqui
      December 27, 2017 | 6:56 pm

      Hi Melanie,
      Yes, definitely get your prescription reevaluated and your glasses checked.

  24. Louit
    December 29, 2017 | 7:54 pm

    Hello. I got my new two new prescription glasses. When I wear them, everything is clear and good except that everything is closer which made me trip twice the other day when I was crossing the street. :( I visited them twice already and they said its just normal and takes time in getting used to. They didn’t want to change my prescription as it is the correct one they said. My prescription is as follows:

    OD: S+0.50 C-1.00 Ax167
    OS S+0.25 C-1.00 C180

    Does the prescription made sense? Thanks a lot for your help.

    • jsiddiqui
      January 3, 2018 | 7:07 pm

      Hi there
      We are only an optical lab and cannot say whether the script is right or wrong. That is for a professional to examine. Glasses can take up to 2 weeks to get used to a new prescription. If you feel the doctor gave the wrong information, then I would suggest going for a second opinion elsewhere.

  25. Kate
    January 7, 2018 | 10:36 pm

    Hi, I got new glasses recently. From the start something didn’t feel right so I went to check and it turns out that the center of my lenses is 5mm below my eye level. The manager of the place where I got the glasses from tried to tell me that that is normal but “if I really want to or if I am a person who likes to look through the top of my glasses (?), they’ll fix it for me”. I don’t know how much of it is just lame excuse and I just wanted to consult and make sure that what I had always known is correct. Is it true that looking through lenses that are not aligned with my eyes properly can be bad for my eye sight?

    • jsiddiqui
      January 19, 2018 | 4:54 pm

      Hi Kate,
      The center of the eyeglasses should be aligned with your eyes. I would recommend that you get a second opinion and get your glasses fixed.

  26. Benedict
    January 12, 2018 | 2:17 am


    I bought new prescription glasses and when I close one eye and see with the other, it’s blurrier than the old pair. All the other pairs of glasses even with new prescriptions I seem to see clearer from one eye opened.

    • jsiddiqui
      January 19, 2018 | 5:16 pm

      Hi Benedict, it seems that your prescription in one eye may be off. Please consult another optometrist for a second opinion.

  27. Kiara Woodsland
    January 19, 2018 | 4:19 am

    I like that you talked about how you must consider going back to your optometrist if you experience headaches or dizziness while wearing your eyeglasses because this can indicate an error with your prescription glasses. My daughter bought a reading glass on the market. She mentioned that she’s experiencing frequent dizziness when she’s wearing it. With that being said, it will make sense for my daughter to consult an optometrist and see if there’s a need for her to switch to prescription glasses. I will make sure to share your blog with her.

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