Photophobia: Causes, Symptoms, Daignosis, Prevention and Treatment

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Photophobia
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Photophobia

• Photophobia is a condition in which you are
  unable to tolerate light. When you have
  photophobia, any light source such as street
  lamp, headlight, sunlight, fires and fluorescent
  light can cause discomfort. The level of
  discomfort will further depend on the severity of
  your photophobia. Some people are only
  discomforted by bright lights but in extreme
  cases, any source of light can agonize. Photopho
  bia typically causes a need to squint and close
  the eyes and it is often accompanied by headache
  or nausea. This kind of condition is fairly
  common and occurs in all ages, young and old.

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What causes Photophobia?

• Photophobia is not an eye disease but a symptom
  of many possible causes.Natural Causes
• Large Pupils - Pupil is the black portion of the
  eye that regulates the amount of light entering
  eyes. It adapts accordingly to the amount of
  light that is available in our environment.
  People who are having larger pupil automatically
  indulges more light, thus are more sensitive to
  light.
• Migraines - Any type of light or sound stimulants
  are extremely painful to migraine sufferers as
  migraines frequently cause both photophobia and
  hyperacusis (sensitivity to sounds). That is the
  main reason why patients prefer to stay in dark
  and silent room when migraine hits.

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What causes Photophobia?
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• External Causes
• Refractive surgeries generally cause patient to
  be intolerable to light for weeks. Some can
  develop transient photophobia which has to be
  treated with medication.
• Cataracts (clouding of lens)
• Chalazion (it is a painless bump that gets formed
  underneath the eyelid)
• Thyroid condition (thyroid eye disease)
• Deficiency of beta carotene and lutein
• Total color deficiency, also known as
  achromatopsia (seeing in only shades of grey),
  cause intolerance toward light due to defective
  cone cells.
• Pink eye (inflammation of conjunctiva)

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What causes Photophobia?
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• Retinal detachment
• Contact lenses irritation
• Drug abuse
• Sunburn in eyes
• Computer vision syndrome
• Glaucoma (elevated eye pressure)
• Keratoconus (abnormal thinning of the cornea)
• Eye strain
• Medications like anti-malarial drugs,
  antihistamines, digoxin and some blood pressure
  medications can cause photophobia
• Other conditions such as some kind of poisoning,
  rabies and keratitis can lead to grey rather than
  colored vision in addition to photophobia.

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What causes Photophobia?
Continue

• If you have a habit of reading drug label, you
  will notice that numerous medications include
  increased photophobia somewhere in their long
  list of side effects. Many drugs alter our
  nervous system which causes the pupil to become
  larger and allows additional light into the
  eye.Some of the common medications which are
  known to cause photophobia include antibiotics
  such as tetracycline and doxycycline, antiviral
  drugs such as iodxuridine and trifluridine,
  motion sickness drugs such as scopolamine,
  diabetic drugs such as glyburide and
  chlorpropamide, and any medications that dilute
  the pupil.

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Symptoms of Photophobia

• Here are some of the signs that will show that
  your photophobia might have increased
• Nausea
• Dizziness
• Pain in the eye
• Headache
• Need to squint
• Excessive tearing
• Neck stiffness
• Need to close eyes frequently
• Burning sensation in the eye

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