Table 1.

Basic characteristics of patients for PRF to treat PHN of the trigeminal ophthalmic branch.

Parameter	(n = 32)
Age (years, mean ± SD)	69 ± 15
Gender (female/male)	12/20
Duration of symptoms (year, mean ± SD)	1.50 ± 0.75
Division of trigeminal nerve, n (%)
V1	30 (94.8%)
V2	0 (0%)
V3	2 (5.2%)