The Best Contact Lens for Astigmatism
If you googled for Contact Lens Astigmastim and landed here you probably looking for information about the best contact lens to correct Astigmatism. First of all, an astigmatism is, simply put, a vision problem that related to hyperopia (farsightedness) and myopia (nearsightedness), which is caused by irregularly shaped cornea, or there is a defect in the eye’s crystalline lens. Normally, your eye is almost a perfect sphere, with a lens in front where the light (and what you’re looking at) comes in, and on the inside, opposite the lens, is the retina, which is something like a screen where the image is “projected” by the lens. The retina has light receptors that, in turn, transmit an image to your brain, and you “see” that image that comes in as light through the lens and is projected on the retina and transferred to your brain as an image. This is a very simplistic description of sight, but it’s fine for our purposes. Now, if everything is working well, the image that comes through the lens is crisply focused as one image in the center of the retina. If the eye is astigmatic, then there are problems. The astigmatism focuses the image that comes through the lens in two focal points onto the retina – two images are seen, basically, due to the uneven shape of the eyeball.
How to Correct Astigmatism
Fortunately, sophisticated optics that we take for granted these days can be built into prescription glasses to correct this astigmatism, so that we only see one image – vision problem corrected!
This problem usually can be corrected using glasses, or refracted surgery and even there are natural ways to cure astigmatism.
If you have an astigmatism and want to wear contacts – then you’re in luck! Thanks to the advance technology today, nowadays most major contact manufacturers make lenses that can correct most astigmatisms. The problem of keeping the lens on your eye oriented properly for full vision correction is solved by making a part of the contact lens a little heavier (thicker) towards one side, and then uses gravity to keep the heavy side of the lens down, and keep the lens from turning on your eyeball. This is ingenious.
The lens type that used to correct astigmatism is called toric lens. You can wide range of toric lenses that available in the eye care store.
Toric contact lenses are specially designed to enable them to fit correctly against the eye’s surface. These lenses have two different powers or curvatures in them which are created at different angles to correct astigmatism, farsightedness and nearsightedness. Some toric contact lenses are design to be thick at the bottom part of the lens to keep the contact lens stable on the eye when you blink or move your eyeballs.
In the past, the only contact lens prescribed that can correct astigmatism is RGP lenses – Rigid Gas Permeable, conventional hard lenses that allow oxygen through. But today, toric lenses are also available as regular spherical lenses, which are soft and disposable. There are also daily disposable and even colored toric lenses for astigmatism patient who wish to enhance their natural eye color.
RGP and Soft – Which One To Choose
Most astigmatics prefer soft lenses over the RGPs because they are more convenient and easier to adapt with. However, a small percentage of them find that they prefer RGPs over soft contacts because they retain their shape on the cornea better than soft lenses do and tend to provide slightly better vision. Some of them do not aware of this little difference but people who are particular about their vision might realize it.
So, what is the best lens for astigmatism?
Because of so many brands available in the market today, you might be confused which one to choose. The best is to get consultation and advice from your eye doctor and also get the prescription.
However, just for your reference, here are some popular toric lenses that have good reviews on the internet:
- Acuvue Toric by Johnson and Johnson
- Pure Vision Toric by Bausch & Lomb
- Vertex Toric Encore by Cooper Vision
- Soflens 66 Toric by Baush and Lomb
These lenses cost about $30 – $50 per box, but usually most contact lens retailers offer discount for bulk order, this means the more you buy the more you will save. However, if you are the first timer, you are advised to purchase lenses in small volume, then buy for 6 months or 1 year stock if you feel comfortable with that particular brand. Hopefully Contact Lens Astigmatism .com has helped you to find what you need!
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I’m nearsighted and have astigmatism. I was thinking of trying contacts so… what are the best kinds?