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Age-Related Macular Degeneration (AMD)

Age-Related Macular Degeneration (AMD)

Age-related macular degeneration (AMD) is a kind of eye disease that causes central vision to fade. It occurs when the macula and straight-ahead vision is damaged as a result of ageing. The macula is a component of the retina which is light-sensitive tissue at the back of the eye. AMD can cause vision loss rapidly or gradually, making it difficult to do tasks that need clear vision, such as reading, sewing, cooking, or driving. It can also make it difficult to see in low light. The good news is that AMD rarely leads to total blindness, as it rarely affects side vision....

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What Is the Speed of an Eye Blink?

What Is the Speed of an Eye Blink?

The average person blinks every 4 seconds, or about 15 times per minute, or more than 20,000 times per day, depending on how long they are awake. Each blink lasts about a tenth of a second, which isn't much. However, it is sufficient to clean and lubricate the eye's surface. Blinking shields the eyes from bright lights and irritants like propanethial S-oxide, the tear-inducing substance found in onions. Blinking, according to researchers, also provides the brain with a much-needed break. When people blink, areas of the brain associated with wakeful rest activate, according to the researchers. It turns out that...

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The Path of Light Through the Eye

The Path of Light Through the Eye

Your eyes function similarly to a camera. Light from the surrounding environment passes through the lens and is recorded on the retinas at the back of your eyes. The information from your retinas is then sent to your brain, where it is converted into awareness of objects around you. Light It's a slightly startling fact that the world around you is devoid of colour. There are only surfaces that reflect sunlight at different wavelengths. Your eye interprets the light reflected by these surfaces, and as a result, you perceive objects to have the colour wavelength that they reflect. Light enters...

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Cataract: Causes and Symptoms

Cataract: Causes and Symptoms

A cataract is a clouding of your eye's generally clear lens. Seeing through clouded lenses is similar to seeing through a frosty or fogged-up window for those who have cataracts. Cataracts can cause clouded vision, making it hard to read, drive a car (particularly at night), or see the expression on a someone's face. Cataracts may be developed if you are above the age of 60 and your eyesight has become cloudy or blurry. It's a frequent disease in elderly people that may be cured by your eye doctor. If you do any of the following, you are more prone...

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A Human Eye and a Camera Comparison

A Human Eye and a Camera Comparison

The camera and the human eye share much more than just conceptual philosophy; the eye captures images in the same way that the camera does. The camera's anatomy is more similar to that of a biological eyeball than many people know, including the lens-like cornea and the film-like retina. These similarities give the camera the appearance of a robotic eye. Despite the fact that cameras and eyes share many similarities, they are not identical. Cornea and Lens The cornea is the eye's cap. This transparent (like clear jelly) structure has a spherical curvature and sits in front of the eye....

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