Could this be astigmatism?!


Question: Could this be astigmatism?
I'm trying out contacts for the 2nd time after a 2 year break from them. I notice now (and from the previous times I wore them) that my left eye does just fine with contacts but my right eye is a tad stubborn. Everytime I blink, I feel like the contact is "shifting" and "correcting" itself. In my recent eye appointment, the optometrist said I have slight astigmatism in my right eye but didn't explain what astigmatism is. Is my eye just odd or do I need contacts that cater to people with astigmatism?

Answers:

there are specialized lenses for astigmatism called torics. ITs not true that you can't wear hard contacts - I did for over 20 years even after soft contacts came out as at that point they could put an astigmatism perscription into hard lenses but not into soft. Does teh box of lenses you have for your right eye say toric on it?

The symptoms you are describing say that the fit isn't that good on your right eye. The fact you've had that before implies that its more difficult to fit your right eye and possibly the compromise the optometrist is using isnt' a good one for you. Fit is always a bit of a compromise , like shoes. If you feet are easy you don't get blisters. I have worn soft contacts without an astigmatism perscription in both eyes ( for swimmming daily disposables ) and I didn't have fit problems with those and I have astigmatism in both eyes. However that doesn't mean a toric wouldn't be more comfortable for you.
Your issue might be though that you do have a toric in your right eye. With torics they depend a great deal on sitting right in your eye and sometimes you do get that shift and correct feeling. Fit on torics is critical. I would say this is an effect you don't get with hard lenses, but soft lenses have so many advantages and my optician is quite good at getting a good fit that I prefer soft lenses.



When you say it feels like the contact shifting its probably because it is. When you first put the lens in your eye its moist/wet. That means it can easily slide around if triggered.

If your astigmatism is due to imperfections in the curvature of the cornea then I can say it is very common. Most people get this problem from excessive reading etc. The combination of the eye being still and the infrequent blinking allows the weight of the eyelid to dent or more correctly make a "depression" on the cornea.

If you search in google for "eye topography" you can see what astigmatism is. Please note the area of the eye that they showing is only the cornea. A regular smooth curve is indicated by the colour green. Red and blues indicate irregular steepness in the slope.

By the way I noticed in your avatar you show yourself winking with one eye. Having astigmatism in just one eye may indicate you use your eyelids differently with your right eye. You might be straining the surface of your eyeball without being aware of it.



Having astigmatism doesn't affect the fit of the contact. It just affects how well you will see with that lens if the astigmatism isn't being corrected.

If you only have a 0.25 or 0.50 of astigmatism , then special lenses aren't needed.

Very often even up to 1.00 whole diopter of astigmatism doesn't need a special lens, depending on how strong the sphere power is.

You may require a different brand of lens, or different curvature for your right eye. It could be a tighter eyelid on your right eye that is pulling the lens out of position. Sometimes a thinner lens like the Acuvue 2 will resolve that problem in that eye.

Optician



Astigmatism is when your eye is more of an oval shape as opposed to round. Hard contacts don't work in those eyes since it presses more against the lid, and the front of the eye changes shape. Glasses can correct it, or try soft contacts.

Astigmatism in right eye



I asked a similar question this might help out

http://www.medicinenet.com/astigmatism/a…




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