Which cells are primarily affected in retinitis pigmentosa?

Which cells are primarily affected in retinitis pigmentosa?

• A. Cone photoreceptors first; central vision loss.
• B. Retinal ganglion cells first; color vision loss.
• C. Rod photoreceptors first, followed by cone involvement later; peripheral vision loss and night blindness.
• D. Bipolar cells first; acuity loss.

Answer: (C)