Retinitis pigmentosa is a genetic disorder that results in vision loss. It is known to progress over a period and results in complete blindness. Retinitis pigmentosa is caused by mutations in one of over 100 types of genes. The breakdown and loss of cells in the retina are also known to cause retinitis pigmentosa. Retinitis pigmentosa can broadly be classified into three categories, namely nonsyndromic, syndromic, and secondary. Nonsyndromic is when the disease occurs alone and does not affect any other sensory organs. Syndromic occurs when retinitis pigmentosa occurs with other neurosensory disorders or developmental abnormalities. Secondary occurs because of other systemic diseases.
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