Histoplasmosis (POHS)

Statistics and Associations

  • Scarring in the retina secondary to a previous fungal infection
  • Common in individuals raised on a farm (around chickens or other birds)
  • Endemic in Ohio and Mississippi river valleys
  • Fungus lies dormant with the potential to reactivate later
  • Possibility of new blood vessel growth under the retina at scar location in macula.


  • No treatment necessary if inactive with no new blood vessel growth
  • Refer new blood vessel growth for treatment with anti-VEGF injection