All are true about retinitis pigmentosa EXCEPT –: (A) Genetic inheritance (X–linked), (B) Early diagnosis and treatment, (C) Visual acuity not diminished till late in course, (D) Associated with systemic abnormalities
Answer is B. Treatment is eminently unsatisfactory since nothing appears to have a decided influence upon the course of the disease.
Retinitis pigmentosa shows all three pattern of inheritance, i.e., autosomal recessive (most common), autosomal dominant, sex- linked (X- linked recessive).
Initially there is loss of peripheral vision and central vision is preserved till late.
Retinitis pigmentosa is assoicated with many systemic syndromes.