The Truth About Toric Contact Lenses by:Patricia Brown

Regular contact lenses and Toric contact lenses are made from the same materials

. The most significant difference is that Toric lenses are designed for people with astigmatism, one of the most commonly treated eye conditions. What's remarkable is that modern toric contact lenses offer astigmatism sufferers a selection and freedom that was unavailable in the past.

Toric contact lenses are created with two focal powers in them, as opposed to regular contacts, which only have one. Torics are designed to include different angled curves: one of them is for the astigmatism, and the other is for the nearsightedness or farsightedness of the user.

Because the astigmatism curves must be aligned with the eye in a specific orientation, toric contact lenses also come with a mechanism that helps the contact lens stay relatively stable on the eye. This allows the wearer blink or move their eyes without concern for the lenses shifting around, guaranteeing the torics will provide the clearest and most comfortable vision correction possible. If this measure was not taken and the lenses could move around when the wearer blinked or moved their eyes, the lenses would rotate and prevent the wearer from seeing as crisply as possible.

With this added clarity and comfort comes increased complexity, causing toric contact lenses to cost a bit more than their standard spherical lens counterparts. The main cause for the bigger price tag is the time intensive prescription process. In order to properly fit a toric lens, an eye doctor must invest more time. The requisite added curves require more expertise from both the eye doctor (to get the fitting correct) and the manufacturer (to produce the lens properly). This means that not only will the exam and fitting fees run slightly higher, but that the lenses themselves will sport a steeper price as well.

Fortunately for people with mild astigmatism, such as between zero and 1.00 diopter (either +1.00 or -1.00), it is usually recommended to simply wear a regular spherical RGP or even a spherical soft lens rather than the more complex toric contact lenses. The standard spherical lenses are rigid enough that the wearer's cornea will actually conform to them more than they conform to it, effectively hiding the effect of the mild irregularity of the cornea (astigmatism). When using regular soft contact lenses, optometrists will often compensate for mild astigmatism by prescribing a slightly stronger prescription. Of course this may not work for everyone, so the doctor may need to use trial and error to find the right prescription and fitting for a specific patient.

About the author

Patricia Brown contributes to several web sites, including http://productstips.com and http://great-product.com

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