• Do histo spots cause visual field defects?


    Question:

    Do histo spots cause visual field defects?


    Answer:

    Histoplasmosis is a fungal infection. Some people with histoplasmosis get “histo spots,” or scars in the retina (the light-sensitive tissue in the back of the eye) after swallowing the soil fungal spores (called Histoplasma capsulatum). Histo spots can cause visual field defects depending on their location in the retina. Severe scarring from histo spots in the macula (central part of the retina) can lead to vision loss.

    Those with histo spots or ocular histoplamosis syndrome (OHS) should monitor their vision at home (with an Amsler grid) and annually with their ophthalmologist.