| Contact lenses rest on your cornea atop a | | | | instance, if you suffer from astigmatism your |
| constant supply of tears. The contacts are also | | | | optometrist will measure your cornea so a |
| held in place by pressure exerted from the | | | | contact can be made precisely to fit your eye. By |
| eyelids. When you blink the pressure from the | | | | doing this a contact is made that will fit your eye |
| eyelids cause the contacts to move slightly and | | | | perfectly and direct light rays to one place on the |
| glide over your cornea. This allows the tears | | | | cornea, which in turn corrects your vision. |
| underneath to gently flush out trash or debris that | | | | Those suffering from myopia, also known as |
| may have accumulated in your eye. | | | | nearsightedness, will wear lenses that are thinner |
| This is just how the contact stays on the eye | | | | in the middle and thicker on the edges. This design |
| and is able to provide a way to correct vision. | | | | allows the light rays to be processed correctly by |
| The way the vision is corrected is a different | | | | the retina. |
| story altogether. | | | | Farsightedness sufferers are prescribed just the |
| Contact lenses are prescribed to a wide variety | | | | opposite contact lens, but with the same end |
| of individuals who have vision problems associated | | | | result. They allow the retina to process light |
| with astigmatism, nearsightedness, farsightedness, | | | | correctly as well, resulting in corrected vision for |
| and presbyopia. The retinas of individuals who | | | | the wearer. |
| suffer from these conditions cannot properly | | | | All contact lenses use the basic technology to |
| focus light. When the retina does not function | | | | correct vision for the wearer. They redirect light |
| properly and/or does not properly focus light then | | | | to the retina so it is processed correctly. The only |
| the result is imperfect and blurry vision. | | | | difference is contacts are made differently to |
| Contact lenses are made differently depending on | | | | treat different eye problems. |
| the eye condition they are trying to correct. For | | | | |