Contact Lens Prescription Vs Glasses Prescription?
April 20th, 2010 | See the Top Answers to this Question Below
I wear contact lens’s. I am nearsighted so i cant see far. my contact prescription is -1.75 in each eye. the doc also wrote me a prescription for glasses. I have pink eye and was prescribed these drops so i cant wear my contacts for a week so i had to go and get glasses. i noticed that the prescription for the glasses show -2.25 in each eye although the contact prescription is -1.75. I asked the doc and she said they are 2 different prescriptions and this is normal. when i went to the eyeglass store, i also asked them and they agreed that it seems right. they said that if the contact prescription was -1.75 than this prescription for -2.25 on glasses is right. I havent worn glasses in year. they are making me see good but I am a bit dizzy fromt hem. do I just have to get used to them? do you think the prescription is wrong? They sharpen my vision yes but i get a bit dizzy. it hasnt even been a full daythat i have had them. also keep in mind i do have pink eye right now.
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Sounds perfectly normal. You just need to get used to wearing glasses again. I get exactly the same issue when I haven’t worn mine for a few weeks, it usually goes away after a couple of days.
It is normal to have different prescriptions for glasses and contacts. The reason is because the correction with contacts is closer to the eye
Yes, it is normal to have different glasses vs. contact prescriptions.
However, your case puzzels me because generally the power increase is only one power. For example, my contacts are powered at -3.75, while my glasses are powered at -3.50. You have two power levels (1.75-2.25). That seems odd, and may be the reason for your dizziness.
Yes, contact rx and glasses rx may be different due to what is called vertex distance (the distance from the lens to your eye.) However, you don’t start adjusting for vertex distance until the rx is usually -3.00 or higher. When your rx is lower than that, there isn’t much difference in the power at the different vertices. If your eyeglass rx is -2.25, your contact rx usually is -2.25. If you are having problems, I would get a second opinion.