Specific Structure of a Toric Lens

Also, some there are certain lenses that may reduce the spherical aberration of your eye, that exists along with the myopia or hyperopia, and astigmatism. This type of lens may help some people who have astigmatism to acquire better vision without the necessity of a toric lens.

Spherical lenses have the same power all around the lens, so it doesn't matter if the lens rotates on your eye. Toric lenses have two different powers in the lens, so they must remain in position for best visual acuity. Some toric lenses are heavier and ballasted at the bottom to keep them from rotating.

A small percentage of patients will find that they prefer RGPs over soft contacts for vision amelioration. Because rigid lenses retain their shape on the cornea better than soft lenses, they tend to provide crisper vision to people who have astigmatism. This degree of difference in acuteness is not noticeable for most contact lens users, but if you're particularly fussy about your vision, you may appreciate it.

Many brands of soft toric lenses are available today, so your eye care practitioner can choose the brand with the best characteristics for your particular eyes. Torics are available as frequent replacement, disposable and even daily disposable lenses. They are also available in many colours that either change or saturate your natural eye colour. Some toric coloured lenses are disposable, but depending on the colour and your prescription, you may choose non-disposable toric lenses with a conventional replacement schedule.

Multifocal torics correct for presbyopia which are generally non-disposables may became a good option. There are some soft toric multifocal brands, but often an RGP lens is prescribed in this instance.