Last Updated on April 21, 2023 by amy
Eyeglasses are all the rage right now. People are flocking to become spectacled. People want frames, whether they’re buying glasses for the family, prescription glasses online, or just a nice pair of frames without prescriptions for decoration. But how do prescription glasses work? When we can’t see, we can’t concentrate and suffer from headaches or eye strain. Putting on a pair of glasses makes the world feel better. So what magic is involved in corrective lenses to make our lives better?
How the Eyes Work
The eyeball includes the iris, cornea, pupil, lens, and retina. When everything works properly, there are no vision problems; sunglasses or glasses are merely decoration. The eye can see clearly because the light rays bend properly, sending images to the retina, then onto the brain. When vision doesn’t work correctly, it’s often because the light isn’t bending, or refracting, the way it should. Glasses, placed over the eyes, work as extra lenses that bend light correctly, helping the retina convert light into electrical signals the brain can interpret clearly.
The Difference Between Nearsightedness and Farsightedness
No matter your vision conditions, prescription glasses online are available in both versions, as are prescription sunglasses. However, there is a difference in the diagnosis.
Nearsightedness is called myopia. Sufferers can see objects close, but the light coming farther away isn’t bent correctly and gets confused.
Farsightedness, called hyperopia, means that people can see correctly at a distance. However, objects drawn closer to the face become confused. Myopia is more common than hyperopia because the eyes naturally focus when an object comes close. A diagnosis of hyperopia requires an extreme case of not focusing on close objects.
Astigmatism happens with or without myopia or hyperopia. It is also a refractive problem and often requires stronger glasses to repair. The cornea is shaped unevenly, causing the light to bend in crooked waves. Astigmatism always makes images blurry and often exacerbates any other sight issues.
A New Lens
A prescription for glasses places a new lens over the natural lens, helping light bend correctly when it enters the eyes. Astigmatism often requires a specific type of lens because the lens must also correct the eye shape. Often, people with astigmatism search for prescription glasses online because they can’t wear contacts.
Glasses pull the light onto the correct spot on the retina to produce the clearest image possible. The retina then takes over, bending the light to send the correct image to the brain. Glasses often become necessary for a growing number of people as they age, and since vintage styles are in vogue, many people of all ages are searching for frames online.
Whether prescription or decorative, glasses are the current fashion trend. Placing a pair of sunglasses or vintage-inspired frames on the nose adds a flair for fashion and pop to every style. Find online frames that speak volumes to your style now, and fill your prescription here to keep your eyes healthy.