Table 2

Ocular and electrophysiology findings

Patient no.	VA at presentation (age, months)	Most recent VA (age, months)	DVM	Nystagmus	Strabismus	Refractive error	Fundus	CVI	ERG	Flash VEP	Pattern-reversal VEP	Pattern onset VEP	Step VEP acuity
1	Momentary eye contact (3)	6/19, 6/19 (20)	✓		XT		Normal		Normal	Normal			Raised
2	6/12 BEO (14)	6/19, 6/15 (28)	✓				Normal	✓			Normal		Raised
3	6/76 BEO (13)			✓			Normal			Normal
4	6/48 BEO (6)	6/9.5 BEO (11)	✓				Normal					Normal	Raised
5	6/38 BEO (7)	6/24 ^* BEO (25)		✓			Normal		Normal	Delayed and small	Abnormal	Abnormal
6	6/130 BEO (7)	6/9.5 BEO (20)	✓				Normal		Normal	Normal			Normal
7	6/19, 6/12 (63)			✓	ET		Normal		Normal			Normal
8		6/18 ^* 6/15 ^* (48)		✓			Normal		Normal	Normal			Raised
9	6/76 BEO (6)	5/6, 5/6 (51)	✓	✓		HA	Normal		Normal	Normal	Absent		Raised
10	6/30 by VEP (7)			✓	NK		Normal			Delayed		Normal	Raised
11	6/24 BEO (13)	6/24 BEO (18)		✓			Normal		Small			Normal
12	6/500 BEO (3)	6/120, 6/9.5 (35)	✓	✓	XT	MA (right eye only)	Vessels across macula		Normal	Delayed			Raised
13	Not F&F (2)	6/6, 6/6 (68)	✓	✓	Possible MT		Normal	✓			Normal
14	6/500 BEO (3)	6/9.5, 6/15 (46)	✓		XT	H	Normal						Raised
15	F&F (5)	6/12 ^* 6/12 ^* (60)	✓	✓			Normal	✓	Normal	Normal
16	6/120 BEO (8)	3/18, 3/18, 3/12 BEO (45)		✓		HA	Normal		Normal	Normal			Raised
17	f but not f (3)	6/12 BEO (22)	✓	✓			Normal		Normal		Absent	Normal
18	6/19, 6/15 ^* (71)			✓			Normal	✓	Normal
19	6/24 BEO (27)	6/36 BEO (37)		✓	ET	HA	Slight disc pallor	✓	Normal	Normal
20	6/60, 6/13 (77)					A	Normal		Normal		Delayed		Raised

A, astigmatism; BEO, both eyes open; CVI, cerebral visual impairment; DVM, delayed visual maturation; ERG, electroretinogram; ET, esotropia; F&F, fixing and following; H, hypermetropia; M, myopia; MT, microtropia; VA, visual acuity; XT, exotropia; VEP, visual evoked potential.
↵* Visual acuity (VA) in Snellen equivalent. For visual acuity, the age at testing (in months) is given in brackets next to test findings.