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Are eye glass prescriptions used for contact lens prescriptions?

I went for a optometrist exam. Got glasses but also wanted to try contact lens . I went to a different place for the contact lens fitting but used the same prescription as my glasses for the trial pair of contact lens. But the contact lens feel more powerful than my glasses. With the contact lens reading words from a book or on a computer monitor are slightly blurry but I see things perfectly clear that are a few blocks down the street. My depth perception also feels a bit off with the contact lens since things that are closer to me are blurrier than things farther away. A friend told me their contact prescription is slightly less than for their glasses because contacts are closer to the eye . I would like to know if anyone else has had this problem and how they corrected it . BTW , I have only had the contact lens for a week If that matters.

8 Answers

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  • 1 decade ago
    Favorite Answer

    MISTAKE ! You do not decide the contact lens power---your optometrist does.

    Power of contact lens becomes different:

    1) if spects power more than 4.50D

    2) Cylinder power in spects

    3) Fitting requirements need steep or flat fit of contact lens

    4) Contact lens is having aspheric geometry

    These points indicate that you need professional help.

    Source(s): I am an optometrist (27+ years practice)
  • 1 decade ago

    No, eye glass prescription and contact lens prescription are not the same, I had the same problem years ago and only ended up with huge headaches, you should go see an optometrist for a contact lenses exam.

    Good luck

  • 1 decade ago

    Your friend is right- generally they'll give you the same prescription, but your contacts will appear stronger to you due to a variety of factors (lens closer to the eye, difference in UV filtration, etc). When I first started wearing contacts I experienced the same thing, and noticed a lot more glare with my contacts in compared to my glasses (particularly while driving at night).

    All in all it's just something your eyes need a week or two to adjust to, and you wont notice the difference once they become accustomed to the contacts. :)

  • Just Q
    Lv 6
    1 decade ago

    Yes and no.

    There is more to fitting contacts than there is fitting glasses.

    Contacts generally only have your spherical equivilence with no cylinder component or axis measurement. . . . glasses recipe so to speak.

    Contacts have to have a base curve. . .the specific curve needed to fit your cornea properly.

    Try using your glasses I would almost bet your vision is still blurry when you read or use the computer because both your glasses and contacts are working with your distance vision and not your reading vision.

    I would almost bet you that you are approaching the age of 40 because this is the average age when one needs "bi-focals" or reading glasses.

    You can have glasses made with either a lined bi-focal segment or a no line graduated bi-focal OR you can get contacts where one contact is fitted for your distance vision and the other is fitted for your reading vision. . . you have to learn to adapt to use the one specific eye for your distance and learn to adapt to use the other specific eye for reading. . . takes alittle time to adjust.

    Check back with the Dr that gave you the contacts and talk to them about getting fitted for distance contact and near vision contact .

    Source(s): 7yrs experience with Ophthalmologists and Optometrists as Office Assistant and OR Tech
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  • Anonymous
    1 decade ago

    No. Usually contact lens power must be 0.25 less than eye glasses' power. You had better check your eye doctor. The rule may be not apply on every eye.

  • 1 decade ago

    contacts are usually a different prescription than glasses, but it depends on the strength of your glasses prescription. The higher your glasses prescription is the more different the contact prescription is. also, every contact fits differently.

  • 1 decade ago

    well to answer your question most likely no i wear contacts and SINCE THEY ARE IN CONTACT WITH YOUR EYE they cant have the same perscription as the glasses that are 1"-1.5" from your eye

    just ask your optometrist they tell you straight out

    hope that helps

  • ?
    Lv 4
    5 years ago

    We have to do some optica math and we have to get the right size lens too.

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