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Eyeglasses and contact lenses are both used for vision correction. Both of the options have their advantages and disadvantages but a number of factors like lifestyle, comfort and age etc. are important while deciding which one to choose.
Here is a list of the fundamental differences between using spectacles and using contact lenses:
- Distance from the cornea: Lenses are worn directly on the eye and are in constant physical contact with the cornea while glasses are worn over the eyes. Contact lenses may cause infections in the eye because the user has to touch the eye in order to wear them and to take them off.
- Difference in vision: Since the lenses of spectacles are a little distance away from the eye, vision can be slightly distorted but contact lenses can provide natural and accurate vision. Also, side vision is not improved by glasses as you have to turn your head to see what is beside you. The contacts move around with your eyeballs and the peripheral vision is in focus.
- Ease of use: Some people find eyeglasses difficult to use because of the constant weight on the face and the obstruction caused by the frames of the glasses. There may also be a constant need to adjust the frames. Often eyeglasses slip down the nose when you sweat or engage in rigorous physical activity. Contact lenses are free from all these hassles - they are not distracting or obstructive and so they are extensively used by dancers and athletes. Spectacles is very uncomfortable to wear during the rains or in humid weather because they fog up.
- Infections and complications: Contact lenses can get displaced inside the eye and they can be difficult to reposition. They also cause the eyes to itch and water if you wear them for a very long time at a stretch or if tiny dust particles enter your eyes. The use of eyeglasses is far more flexible in this respect - they can be removed in case your eye itches or burns, but regular use of glasses causes dark circles and bags under the eyes.
- Aesthetic differences: People often prefer contact lenses as they do not change the physical appearance - they help you look natural and you can also use colored lenses to change the color of your eyes. Glasses may look slightly unnatural but some people also prefer them for the fashion quotient.
I am 24 years old and i am having a vision problem to increase the vision sight what are the steps to be follow.
Hi sir. Some black dot is moving in my right eye. Is there any thing loss of vision happened to me. Clarify my doubt. Thanking you.
Are you the one who loves to be outdoor for long hours? Or, does your work keep you under the sun for long? Well, if it is so, you need to be alert about your eyes. Long exposure to sunlight can damage your eyes. Put your glares and hat on a hot sunny day to keep your eyes away from any kind of damage.
There are several eye diseases, which are either caused or aggravated due to long exposure to sunlight. UV radiation can be generated from a natural or artificial source. Regardless of its origin, these rays are harmful for the human eye. Usually, when we talk of UV rays, we think of its adverse effects on skin. However, it is not just the skin that gets affected. The eyes are equally vulnerable.
What are UV rays?
It is a part of the solar radiation. These are of three types: UV-C, UV-A and UV-B. While UV-C is absorbed by the ozone layer, the other two rays penetrate the layer to affect human body.
It’s effect on eyesight
UV rays cause damage to the eyes. There are several diseases or disorder caused by these rays. Some of these have been discussed below:
Macular Degeneration: It happens as the retina is damaged by the UV rays. It leads to age-related blindness. It usually happens to people who are exposed to UV rays for a long period.
Cataract: It is a disorder in which the eye lens gets clouded. About 10% cases of cataract are caused due to exposure to UV rays. This is caused by UV-B rays.
Pterygium: This disease is often known as ‘surfer’s eye’. In this disease, a pink, non-cancerous growth is formed on the conjunctiva. UV rays cause these growths.
Skin Cancer of the eyelids: UV rays can cause cancer of the skin in and around the eyelids.
Photokeratitis: This is known as corneal sunburn or ‘snow blindness’. Photokeratitis occurs due to spending long hours at the beach or skiing. If a person doesn’t take proper eye protection during these activities, this disease can occur. It sometimes causes temporary vision loss.