Table 1.

Summary of Clinical Data for Some Members in one Chinese Pedigree

Patient	Gender	Age of test (yrs)	Age of onset (yrs)	Visual acuity right	Visual acuity left	Level of visual impairment
I-2	F	35	18	0.03	0.05-	severe-
II-1	F	75	8	0.01	0.01	profound
II-3	F	72	7	0.01	0.01	profound-
II-5	M	24	23	0.07	0.1	moderate-
III-1	F	53	9	0.08	0.05	moderate
III-3	F	51	18	0.02	0.01	profound
III-5	F	42	24	0.01	0.01	profound
III-7	F	39	12	0.3	0.25	mild
III-9	M	14	12	0.03	0.02	severe-
III-10	M	45	-	1.2	0.4	normal
III-11	M	25	17	0.05	0.07	moderate
III-12	M	20	20	0.05-	0.10-	moderate
III-13	F	19	19	0.1	0.2	mild
III-15	F	24	22	0.08	0.09	moderate
IV-1	F	31	7	0.12	0.6	mild
IV-3	M	28	20	0.02	0.04	severe
IV-4	M	30	18	0.01	0.02	profound
IV-6	M	27	18	0.4	0.15	mild
IV-7	F	20	9	0.1	0.6	severe
IV-8	F	19	9	0.4	0.12	mild
IV-9	F	18	10	0.25	0.5	mild
IV-10	M	14	9	0.6	0.3	mild
IV-11	M	17	-	0.6	0.5	normal
IV-12	M	20	18	0.03	0.05	severe
IV-13	F	16	16	0.08	0.09	moderate
IV-14	M	17	17	0.1	0.2	mild
IV-15	F	19	19	0.05	0.03	severe
V-1	F	7	-	0.8	1	normal
V--2	F	7	-	1.2	1.2	normal
V-3	M	3	-	1.2	1.2	normal

F= Female; M= Male;