Ocular histoplasmosis syndrome (OHS) often has no symptoms in its early stages. You may have been affected by OHS without knowing it. The evidence that the inflammation ever occurred are tiny scars called "histo spots," which remain at the infection sites. Histo spots do not generally affect vision, but for reasons that are still not well understood, they can result in complications years — sometimes even decades — after the original eye infection. Histo spots have been associated with the growth of the abnormal blood vessels underneath the retina.

In later stages, histoplasmosis symptoms may appear if the abnormal blood vessels cause changes in vision. The symptoms for OHS are the same as choroidal neovascular membrane symptoms .

These include:

  • Blank spots in your vision, especially your central vision;
  • Distorted vision, so that straight lines appear bent, crooked or irregular;
  • Size of objects may appear different for each eye;
  • Colors lose their brightness; colors do not look the same for each eye;
  • Central light flashes or flickering.

If you experience any of the symptoms of histoplasmosis, you should see an ophthalmologist (Eye M.D.).

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