Medical Definition of Histo-

Organization - organization. Histocompatibility (histocompatibility) and histology (tissue survey, especially under the microscope) etc.

Scientists believe that Hististospores will remain in the choroid, a blood vessel that supplies blood and nutrients to the retina as it spreads out of the lungs. The retina is the photosensitive layer of the tissue placed behind the eye. Scientists have not been able to detect trace amounts of tissue fungi in the eyes of patients with ocular histoplasmosis syndrome. However, there are good reasons to doubt that organisms are the cause of OHS. When fragile abnormal blood vessels grow under the retina, OHS develops. These abnormal blood vessels form lesions called choroidal neovascularization (CNV). If not treated, the CNV lesion becomes scar tissue and may replace normal retinal tissue within the macula. The macula is the center of the retina and provides a clear central vision that allows you to read and drive newspapers.

Ophthalmologists typically diagnose OHS if careful eye examination reveals two conditions: (1) the presence of tissue plaques indicating previous exposure to tissue fungal spores; and (2 ) Swelling of the retina, new abnormal blood vessel growth. In order to confirm the diagnosis, an extended examination must be carried out. This means that students can temporarily expand through special infusions to allow the ophthalmologist to better look through the retina. If liquid, blood or abnormal blood vessels are present, the ophthalmologist may wish to perform a diagnostic procedure called fluorescein angiography. In this process, the pigment injected into the patient 's arm moves to the blood vessels of the retina. Dyes can better observe CNV lesions and photographs can record where and where they are spreading. Pay particular attention to the proximity of abnormal blood vessels to the fovea centralis

OHS usually has no symptoms in the initial stage, the first OHS infection usually resolves without treatment. The same applies to other tissue viral infections, in fact the only evidence of inflammation is a small wound called "tissue plaque" that remains in the infected area. Organization spots usually do not affect vision, but for unknown reasons it may cause complications for years - sometimes decades after the first eye infection. Tissue plaques are associated with abnormal blood vessel growth under the retina