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.

25 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.

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