MedComic

Pterygium vs. Pinguecula

Jorge Muniz ·
Educational medical illustration comparing pterygium (fleshy triangular conjunctival growth extending onto the cornea that may interfere with vision) and pinguecula (yellowish elevated conjunctival bump that does not cross the cornea), both occurring on the nasal side due to chronic UV exposure
Illustrated guide comparing pterygium and pinguecula — two common conjunctival growths caused by chronic actinic irritation, with distinguishing features and management. Proprietary medical illustration by Jorge Muniz, PA-C.
  • Pterygium: fleshy triangular mass that extends to the cornea
    • May interfere with vision
  • Pinguecula: yellowish elevated bump or patch that does not grow across the cornea
    • Treatment is not usually necessary but can be surgically removed
  • Both are conjunctival growths that may result from chronic actinic irritation, repeat trauma, or exposure to dry/windy conditions
  • Typically occur on the nasal side
  • They may cause irritation or cosmetic blemish

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