Toric contact lenses

Toric contact lenses

For a lot of years after their introduction contact lenses managed to simply correct nearsightedness or farsightedness, but nothing else. Changing the point at which light rays focus is a reasonably simple task, though it does need careful creating of the lens. Nearsightedness causes light rays to focus out front of the retina. Farsightedness causes light rays to focus behind the retina.

But, astigmatism denotes a condition in which the cornea, lens or the eyeball as a full is misshapen. The effect is sophisticated, but small variations in the eye produce an enormous effect. Light rays get scattered in different directions, not just before or behind the retina. That multiple direction effect makes it more hard to produce contact lenses ( or even glasses ) that may correct the condition. Toric lenses solve the problem by mixing shapes. Regular contacts are formed like some of a sphere. Toric lenses mix a round surface with a toroidal surface. A donut for instance is a toroid, so is a cylinder when it wraps around to touch itself.

Though formed differently, toric contact lenses are made from the same materials as other contact lens types. But because they're a mixture of shapes they will not be permitted to revolve around the eye like standard contacts.

Also, all toric lenses are designed with multiple powers to take on more than one vision problem at the same time, for example astigmatism and farsightedness together. Those features make them more hard to produce properly and eye exams and fitting are far more difficult. As a result, toric lenses have a tendency to be costlier and so are doctor visits to prescribe them. For some with only a mild astigmatism the additional cost can be evaded by employing regular contact lenses. To a degree, the cornea will incline to comply with the form of the lens. If the astigmatism is mild enough toric lenses won't be obligatory. Only your eye care pro can say for sure, after an examination. For those that do need toric lenses, the full range of selections is available and they're employed terribly well. Generally those with an astigmatism need contacts that achieve multiple goals.

 

Toric contact lenses are available in disposable lens types, if 2-day or 7-day or maybe 30-day. A lot of extended wear lenses come in a toric option, too. For those that need to add a hint of color to their contact lens, toric styles also provide that range of options. Visibility tints make lenses simpler to see, making them simpler to touch and harder to lose. Boosted or full color tints can subtly influence eye color or change it completely. Colored toric lenses are available for that, too. Check out the full catalogue of selections in toric contact lenses and you are sure to find one just your kind of thing.