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As of 2014, the only way to change eye color permanently is through the use of iris implants, which present serious health risks. A laser surgery is being developed that may work, and people can influence the perception of their eye color with clothing colors or colored contact lenses.

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  • What is the best human vision?

    Q: What is the best human vision?

    A: The very best human eyes have 20/8 vision, according to LiveScience.com. A person with 20/8 vision can see things as well from 20 feet away as most people can see at a distance of only 8 feet. This is the best vision possible with human eyes.
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  • What are some steps how to improve your eyesight?

    Q: What are some steps how to improve your eyesight?

    A: According to Dr. Mao Shing Ni for The Dr. Oz Show website, some of the ways an individual can improve his eyesight are to eat the right foods, exercise the eyes and make sure the eyes get plenty of rest. Some doctors recommend massages as a way to increase the flow of blood to the eyes and acupuncture to strengthen vision, notes WebMD.
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  • How does a blind man see?

    Q: How does a blind man see?

    A: Blindness is a broad term used to describe a wide array of visual limitations. Those who are blind see nothing at all. However, in some cases they might be able to experience flashes or flickering images of light and color.
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  • Why is my vision blurry sometimes?

    Q: Why is my vision blurry sometimes?

    A: According to WebMD, blurry vision may stem from a number of sources, including an eye injury, nearsightedness or allergies. Hay fever and indoor allergens may also cause blurriness in the vision. Dry eye, pink eye and foreign objects in the eye also cause blurriness.
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  • Why does eyesight deteriorate with age?

    Q: Why does eyesight deteriorate with age?

    A: Human eyesight deteriorates with age because the essential parts of the eye lose freshness and functionality in time and with extended use. Examples of issues related to decreased function of a specific part of the eye include problems with near-sight vision (otherwise known as presbyopia) and issues reading small text, which is the result of a loss of flexibility in the eye's lens. Age-related diseases can also cause damage to the retina and optic nerve, although age alone does not necessarily damage these parts of the eye.
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  • What are the main functions of the eye?

    Q: What are the main functions of the eye?

    A: The main function of the eye is to convert light into electrochemical impulses that the brain can interpret as visual images. The various parts of the eye perform different functions that contribute to this purpose.
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  • Why do people sleep with their eyes open?

    Q: Why do people sleep with their eyes open?

    A: People who sleep with their eyes open suffer from a medical condition called nocturnal lagophthalmos. This condition is a type of facial paralysis caused by bodily trauma, stroke, surgery or Bell's palsy. Nocturnal lagophthalmos is a malfunction of the orbicularis muscle in the eyelid. The condition may be temporary or permanent, according to optometrist Dr. Troy L. Bedinghaus.
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  • How long do I have to wait to wear makeup after having pink eye?

    Q: How long do I have to wait to wear makeup after having pink eye?

    A: When infected with pinkeye, EyeSmart recommends waiting two weeks after completing a course of topical antibiotics before using makeup. If the pinkeye is caused by a virus, doctors do not prescribe eye drops, but two weeks is also the suggested waiting period before resuming the use of makeup.
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  • What does the cornea do?

    Q: What does the cornea do?

    A: As described by Healthline.com, the cornea's main function is to refract light entering the eye. St. Luke's Cataract & Laser Institute adds that the refraction of the cornea provides two-thirds of the human eye's focusing power.
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  • How long do eye floaters last?

    Q: How long do eye floaters last?

    A: WebMD states that eye floaters generally do not go away once they form, but do become less noticeable over time. If the floater is seriously affecting someone's vision, he or she should consult an optometrist.
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  • Can cataracts cause headaches?

    Q: Can cataracts cause headaches?

    A: Headaches are only a symptom of hypermature cataracts, a progressed form of cataracts that have become completely white, according to Medical News Today. At this point, sufferers may also experience inflammation and pain, and the cataracts need to be surgically removed.
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  • Can you get same day eyeglasses?

    Q: Can you get same day eyeglasses?

    A: Many vision centers offer same-day eyeglass services. These centers combine an optometrist service to test vision with an on-site laboratory that prepares the lenses and inserts them into the frames while the customer waits.
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  • Why do my eyes burn when I put my contacts in?

    Q: Why do my eyes burn when I put my contacts in?

    A: Eye allergies, sensitivity to ingredients in the contact lens solution, dirty lenses and dry eyes can make the eyes burn when contacts are inserted, according to All About Vision. Bausch & Lomb advises individuals who experience burning sensations when inserting contact lenses to remove them immediately.
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  • Why are my contacts blurry?

    Q: Why are my contacts blurry?

    A: Sam's Club Optical reveals four main reasons that contact lenses become blurry, including protein deposit build-up, dry eye syndrome, deteriorated or scratched contact lenses and blurriness that isn't related to the contact lens. Most problems with blurry contact lenses are solved by maintaining a regular contact cleaning schedule and wearing the proper type of contact lens.
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  • What should you do if you get a contact stuck in your eye?

    Q: What should you do if you get a contact stuck in your eye?

    A: Contacts can get stuck in the eye at any time, usually due to eye dryness. The easiest way to handle a stuck contact is to rinse the eye with contact lens solution. Then, close the eye and massage the upper eyelid until the lens moves.
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  • How do you pick eyeglass frames?

    Q: How do you pick eyeglass frames?

    A: To pick eyeglass frames, look for frames that balance the shape of your face, and pick frames with flattering color, pattern and proportion. Your eyes should be centered in the frames. Try on many different frames before making your choice.
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  • How do you tighten glasses?

    Q: How do you tighten glasses?

    A: Tighten loose glasses by pressing the area near the temples slightly inward. Metal frames can be directly adjusted, while plastic frames need to be warmed before manipulation.
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  • How do I adjust eyeglass frames?

    Q: How do I adjust eyeglass frames?

    A: Adjust the frames of your eyeglasses to fit your face by softening the arms with a hairdryer. When the arms are soft, bend them to the desired shape.
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  • How do polarized sunglasses work?

    Q: How do polarized sunglasses work?

    A: Polarized sunglasses are coated with a vertical film that filters out the horizontal light waves reflected off of smooth flat surfaces, such as roads and water. These reflected waves are commonly called glare.
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  • How do you put contacts in small eyes?

    Q: How do you put contacts in small eyes?

    A: If it seems as if your eyes are getting smaller, you may be squinting because your eyes are too dry. Use a moisturizing solution with your contacts. When inserting contacts, do it without stretching the eyelids for the most comfortable experience.
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  • How do you fix broken reading glasses?

    Q: How do you fix broken reading glasses?

    A: To fix broken reading glasses, purchase an eyeglass repair kit, replace any lost screws, apply clear nail polish to secure the screws, and wrap a rubber band around the arms to tighten a loose hinge. If the plastic frames have broken, wrap tape around the break.
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