eyes are really sensitive to light?
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Light sensitivity is a condition in which bright lights hurt your eyes. Another name for this condition is photophobia. It's a common symptom that's associated with several different conditions, ranging from minor irritations to serious medical emergencies.
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It can be caused by bacteria, a virus, or for wearing your contacts for too long. Despite the cause, light sensitivity is often a primary symptom.
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Rats are very sensitive to light; bright light can cause stress and harm their eyes ¿ particularly albino strains (red-eyed white rats). The temperature and humidity of anywhere they¿re housed to be appropriate.
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There are two types of light-sensitive elements in the retina: rods and cones.
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The sun or bright indoor light can be uncomfortable, even painful. Photophobia isn't a condition -- it's a symptom of another problem. Migraine headaches, dry eyes, and swelling inside your eye are commonly linked to light sensitivity. It can cause pain whenever you're in bright sunlight or indoor light.
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If you start to experience light sensitivity, it's important to see an optometrist (also known as an optician) to have your eyes checked. An optometrist will be able to examine the health of your eyes to check for any underlying eye condition which could be causing your light sensitivity.
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More melanin also means better protection from the sun-- the pigment in your eyes literally protects your retina. Light eyes such as blue, green or grey are more sensitive in sunlight. Most people are sensitive to sudden light, such as walking out of a dark hallway on a sunny day.
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In someone who is light sensitive, any type of light source (sunlight, fluorescent light, incandescent light) can cause discomfort. Photophobia typically causes a need to squint or close the eyes, and headache, nausea, or other symptoms may be associated with photophobia. Symptoms may be worse with bright light.
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Light sensitivity is a hypersensitivity to light. A sudden onset of substantial or even painful light sensitivity (photophobia) may be caused by inflammation in the eye. This may be due to a foreign body in the eye, an infection of the cornea or an inflammation of the iris or uvea.
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People with light eye color (such as blue, green or hazel) are more sensitive and dilate faster than people with dark eye color (brown). With dilated pupils, you will be sensitive to light and you will find it difficult to focus on nearby objects.
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A dilated pupil sometimes can still react to light — that is, get smaller in bright light or when a light is shined at the eye. But typically, dilated pupils don't respond normally to light. A large pupil that is completely unresponsive to light is called a "fixed" dilated pupil.
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This is because darker-coloured eyes contain more pigment, which offers natural protection in bright sunlight and other harsh conditions. If you have a natural light sensitivity, protecting your eyes with sunglasses and a broad-brimmed hat can help alleviate your symptoms.
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Eyes with lower pigment (blue or grey eyes) are more sensitive to light. This means they don't need to absorb as much light as brown or dark eyes before this information reaches the retinal cells.
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If you have a lighter eye color, your eyes are more sensitive to light because you have less pigment and melanin in your irises to protect your eyes from the sun. This means that you could have a greater risk of macular degeneration, and that you might find yourself squinting more when you go outside during the day.
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This makes lighter eyes more sensitive to light and is what makes people with blue eyes more likely to have age-related macular degeneration. Macular degeneration is caused when the light sensitive cells in the eyes start to die, which can eventually result in blindness.
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It is well known that people with lighter eyes tend to be more sensitive to light, a result of having less pigment in the iris to protect them from sunlight. That can place them at a greater risk of macular degeneration and other eye-related problems.
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Photophobia typically causes a need to squint or close the eyes, and headache, nausea, or other symptoms may be associated with photophobia. Symptoms may be worse with bright light. People with light-colored eyes are more likely to have sensitivity to bright light than those with darker-pigmented eyes.