Blindness and visual impairment in retinitis pigmentosa: a Cameroonian hospital-based study

Figures & data

Table 1 Age distribution of patients with retinitis pigmentosa

Age (years)	n	%
<10	1	2.5
11–20	3	7.5
21–30	7	17.5
31–40	5	12.5
41–50	11	27.5
51–60	5	12.5
>60	8	20.0
Total	40	100

Figure 1 Distribution of blindness and low vision.

Table 2 Distribution of blindness and low vision according to patient age

Age (years)	Visual pathology
	Bilateral blindness n (%)	Low vision n (%)	Unilateral blindness n (%)
<10	0 (0.00)*	0 (0.00)*	0 (0.00)*
11–20	0 (0.00)	1 (33.33)	0 (0.00)
21–30	2 (28.57)	1 (14.29)	1 (14.29)
31–40	1 (20.00)	3 (60.00)	0 (0.00)
41–50	2 (18.18)	3 (27.27)	0 (0.00)
51–60	3 (60.00)	1 (20.00)	0 (0.00)
>60	4 (50.00)	2 (25.00)	0 (0.00)
Total	12 (30.00)	11 (27.50)	1 (2.50)

Table 3 Distribution of patients according to associated pathologies

Associated pathologies	n	%
Cataract	4	10.00
ARMD	3	7.50
Glaucoma	3	7.50
High myopia	2	5.00
Isolated RP	27	67.50
Unilateral macular hole	1	2.50
Total	40	100.00

Abbreviations: ARMD, age-related macular degeneration; RP, retinitis pigmentosa.

Table 4 Distribution of associated pathologies according to patient age

Associated pathologies*	Age (years)							Total
	<10	11–20	21–30	31–40	41–50	51–60	>60
Cataract	0 (0.00)	0 (0.00)	0 (0.00)	1 (20.00)	1 (9.09)	1 (20.00)	1 (12.50)	4 (10.00)
ARMD	0 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)	3 (37.50)	3 (7.50)
Glaucoma	0 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)	1 (9.09)	1 (20.00)	1 (12.50)	3 (7.50)
High myopia	0 (0.00)	0 (0.00)	1 (14.29)	1 (20.00)	0 (0.00)	0 (0.00)	0 (0.00)	2 (5.00)
Macular hole	0 (0.00)	0 (0.00)	1 (14.29)	0 (0.00)	0 (0.00)	0 (0.00)	0 (0.00)	1 (2.50)

* n (%).

Abbreviation: ARMD, age-related macular degeneration.