Table 2. Details of the participants in the study.

Participants	Gender		Average age (years)	Diagnosis
	Male	Female
Isolated	32	16	35 (range 12-60 years).	RP
adRP	28	25	30.5 (range 3-61years)	RP
Controls	50	25	61.5 (range 42-70 years)	normal

Of 151 individuals recruited for the study, 101 were RP patients (48 isolated and 53 adRP) and 50 were unrelated healthy individuals. All the patients demonstrated typical features of RP. The average age has been calculated for all three groups of participants and is as tabulated above. However to overcome the problem of late onset of the disease in control group and to ensure the presence of the normal individuals in the same, we recruited individuals of age group between 42-70 years.