Contact lenses work by correcting vision problems, like nearsightedness, by adjusting how light focuses on the retina.
Understanding How Vision Works
Normally, light enters the eye and focuses directly onto the retina, which is located at the back of your eye, allowing you to see clearly. When you have trouble seeing far away, it is often because your eye focuses light in front of the retina instead of directly onto it. This causes blurry vision.
How Contact Lenses Correct Vision
- Light Adjustment: When you place a contact lens on your eye, the lens changes the path of light rays as they enter your eye.
- Focusing on the Retina: Specifically, for nearsightedness, the contact lens is designed to bend the light so that the light rays angle further back into your eye.
- Clear Vision: This allows the light to converge right onto your retina, enabling you to see clearly. The contact lens effectively helps the eye to focus light correctly for sharp vision.
In essence, contact lenses act as an external aid that modifies how light is refracted (bent) by the eye, resulting in properly focused images on the retina.
