Astigmatism corrective toric contact lenses

Thursday, October 1st, 2009 at 10:06 pm Post in Contact Lenses

Nowadays, toric contact lenses are available in nearly all lenses types, such as soft materials, disposable, frequent replacement, multifocals and colored types.

Toric contact lenses are similar with bifocals in focal points, which have two different powers resulted from different curvatures. So that toric lenses can correct both astigmatism and myopia or hyperopia. The difference between toric lenses and spherical lenses lies in that they can not rotate on eyes under blink or looking around. Toric lenses can be soft and RGPs and require more time and skills so that their prices are unavoidably higher.

If you only have a mild astigmatism between zero and 1.00 diopter, toric lenses is not a necessity. The rigidity of common spherical RGP lenses offer a comfortable shape for your cornea thus reduces the need for astigmatism correction. ECPs may also use high-power spherical soft lenses to achieve a same effect. Both of these two ways require some trials. A third type of lenses that reduce eye spherical aberration can also “correct” astigmatism without a need for toric lenses.

As mentioned before, toric lenses can be soft and RGPs. Most people neglect the shape-maintenance performance of RGP toric lenses and choose more comfortable soft lenses, even if RGPs provide a sharper vision.

Among the wide options of toric colored lenses, multifocal toric lenses and branded toric lenses, your ECP is the judge based on your eye conditions. While toric colored (both enhancement and change types) lenses are provided in both disposable and non-disposable types, multifocal toric lenses are mostly non-disposable and in RGPs type.

Toric contact lenses are offered by many brands in silicone hydrogel lens, including monthly disposable type and quarterly replacement lenses for special prescription. Customers always need to choose ECPs who offer fitting toric lenses for your personal vision welfare.