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Toric Contact Lenses: When to Use |
Toric Contact Lenses are a great solution for people who are
either
near- or farsighted, plus have astigmatism, and thus can't wear
standard contacts. The feature of torics, this is how some
people
call toric contact lenses, is that they combine
characteristics of
spherical and cylindrical lenses with having several angles or
curvatures specially designed for vision changes and astigmatism.
Should there be presence of astigmatism in one eye of a
patient's,
she can be recommended to order one spherical lens and the other toric.
One of the main characteristics of toric contact lenses is that they
have specially noted top and bottom. This can be caused due to a
different consistency of a lens. It's a common thing for torics that an
upper part is thicker or thinner than a bottom one. This can be
explained by changes in inner shape.
A principal distinction between a spherical and a toric contact lens is
that the latter can't rotate in an eye. There is a certain bottom and a
top part. After putting a contact in an eye it will be fixed in the
right position and no eyelid rubbing will be able to alter it.
The material from that torics are made is the same as for ordinary
lenses. Consequently, they can be soft or rigid gas permeable, the
abbr. of RGP is used. What is more, lately silicone hydrogel torics
have been developed, and people have more options to choose from now.
In general, toric contact lenses can be worn for a day, several days or
up to a month. There are even colour torics available in
optics
Toric contact lenses cost a bit more than usual spherical contacts, the
reason to give can be that toric production is pretty
expensive, still it is cost effective to buy torics,
especially if
this is the only contact
lens type
you can wear without detriment of a corneal or an eye in total.
Furthermore, an eye practitioner will need to personalize a
toric
for your eye. Such a contact
lens fitting can add more expenses for a patient, but there
is nothing dearer than health.
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