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What is
Conjunctival Melanosis?

Conjunctival melanosis is a non-cancerous condition characterized by the presence of dark or brown pigmented spots on the conjunctiva, the translucent membrane covering the sclera (the white part of the eye). While it is usually harmless and painless, conjunctival melanosis may be of cosmetic concern to some patients. Conjunctival melanosis is most often associated with excessive ultraviolet (UV) exposure, particularly from sunlight.

Symptoms of Conjunctival Melanosis:

  • Brown or dark spots on the eye’s surface
  • Asymptomatic in most cases
  • Rarely, mild irritation or discomfort

How Sun Exposure
Increases the Risk

Excess sun exposure, particularly to ultraviolet (UV) radiation, can elevate the risk of conjunctival melanosis. UV radiation is known to cause DNA damage and trigger the production of melanin, the pigment responsible for skin and eye color. In response to UV exposure, the conjunctiva may produce more melanin, leading to the development of pigmented spots. Hence, prolonged UV exposure is a key factor in the pathogenesis of conjunctival melanosis.

Other Risk Factors:

  • Genetic predisposition
  • Age (more common in middle-aged and older individuals)
  • Fair skin and light-colored eyes
  • Occupational exposure to UV radiation (e.g., outdoor workers)
  • Living in sunny climates
  • History of eye conditions or surgeries
  • Smoking

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