Protective Role of Glutathione and Nitric Oxide Production in the Pathogenesis of Pterygium

Table 1

Age (mean ± SD) of the study population by group and gender.

Groups	C	P	R	Ps	Pt
All patients	61.3 ± 6.0	56.9 ± 10.5	46.1 ± 6.3	53.0 ± 10.3	55.4 ± 9.3
N	19	36	19	17	29
Men	61.9 ± 5.9	53.8 ± 8.7	45.6 ± 7.1	50.1 ± 8.0	56.5 ± 13.4
N	7	18	10	8	11
Women	60.8 ± 5.4	62.1 ± 13.0	46.8 ± 4.9	55.5 ± 8.9	52.5 ± 10.3
N	12	18	9	9	18

C, control group; P, untreated primary pterygium group; R, recurrent pterygium group; Ps, systemic-treated primary pterygium group; Pt, topic-treated primary pterygium group. Treatments were with NAC. versus the control; comparing the primary pterygium group with other pathological groups.