Ophthamologist Questions Ophthalmologist

Why do I see better with my glasses than contacts?

I wear both glasses and contacts. I see better with my glasses than contacts. Is it normal?

5 Answers

There's a couple reasons why this may be happening. The most common reason is that you may have a mild amount of uncorrected astigmatism (not enough to warrant using a special lens). The mild amount can be easily corrected in your glasses therefore making the images clearer. A few other reasons may be the contacts are not wetting well or fitting properly on your eyes resulting in poorer optical quality.
I get asked this question often! The short answer is: it depends on each individual patient. Your refractive error prescription can be made up of the following: - Nearsightedness or myopia, is when things are more blurry far away and you can see better at near - Farsightedness or hyperopia, is when things are more blurry up close and you can see better at the far distance (unless you are young) - Astigmatism, is when the refracting surfaces of your eye are not spherical and round but more oval like a football, thus can cause defocus at both distance and near - Axis, the orientation of the astigmatic oval eye since it is not completely spherical. Thus if you have astigmatism, you may notice the image bend and change as you rotate your glasses lens in front of your eye In glasses, typically myopia/hyperopia/astigmatism can be adjusted in 0.25 diopter steps (diopters are units of refractive error). The axis can be adjusted in 1 degree steps. In contact lens, myopia/hyperopia can be adjusted in 0.25 diopter steps unless you have a higher refractive error (usually over 6). Astigmatism is usually adjusted in 0.50 diopter steps and is only incorporated in your contact lens if it is 0.75 and higher. The axis is usually only able to be adjusted in 10 degree steps. So you can imagine if your refractive error parameters are in between those adjustments, your glasses will be more precise than the contacts. However! If your refractive error is very high, the thickness of the glasses lenses or the compression that was needed to thin your thick lenses can cause aberrations. Aberrations are imperfections or distortions in how light is focused through the glasses lenses, like when youre looking through a pair of glasses and things appear a bit blurry or distorted around the edges. These imperfections can cause things to look less sharp or clear than they should.
Short answer, You could have astigmatism which was corrected with your glasses but it was not with your contacts
Please ask your optometrist to see if you could wear toric contacts to have better vision or something else may need to be adjusted
Good luck
Hard to definitively answer without more clinical information. One common reason is low astigmatism, which is not corrected by contact lenses and is corrected by glasses.
Maybe you need to get your contact lens fit done again