How Do Contact Lenses Work?

How Do Contact Lenses Work?

Contact lenses rest in your cornea atop a relentless provide of tears. The contacts are also held in place by pressure exerted from the eyelids. Whenever you blink the pressure from the eyelids cause the contacts to move slightly and glide over your cornea. This permits the tears underneath to softly flush out trash or debris that will have accrued in your eye.

This is just how the contact stays on the eye and is able to provide a way to right vision. The way the vision is corrected is a different story altogether.

Contact lenses are prescribed to a wide variety of individuals who have vision problems related with astigmatism, nearsightedness, farsightedness, and presbyopia. The retinas of individuals who are suffering from these conditions cannot properly focus light. When the retina does not operate properly and/or doesn't properly focus light then the result's imperfect and blurry vision.

Contact lenses are made in another way depending on the eye condition they are attempting to correct. As an example, should you suffer from astigmatism your optometrist will measure your cornea so a contact could be made exactly to fit your eye. By doing this a contact is made that will fit your eye completely and direct light rays to at least one place on the cornea, which in turn corrects your vision.

Those suffering from myopia, also known as nearsightedness, will wear lenses that are thinner in the center and thicker on the edges. This design allows the light rays to be processed appropriately by the retina.

Farsightedness sufferers are prescribed just the opposite contact lens, but with the identical finish result. They allow the retina to process light appropriately as well, leading to corrected vision for the wearer.

All contact lenses use the essential technology to correct vision for the wearer. They redirect light to the retina so it is processed correctly. The only distinction is contacts are made in another way to treat different eye problems.

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