Table 1.

The Demographic and Clinical Characteristics of Subjects at Each Time Point

	Baseline (n = 356)	1 Year (n = 332)	4 Years (n = 266)
Demographics
Sex, female	253 (71)	241 (73)	203 (76)
Median age, y (IQR)*	60 (50–70)	61 (51–71)	64 (51–74)
Visual acuity (logMAR)
0–0.3	23 (9)	46 (14)	45 (17)
0.4–0.7	86 (25)	84 (25)	61 (23)
0.8–2.0	158 (46)	117 (35)	24 (9)
Mean VA (95% CI)†	0.81 (0.20–1.60)	0.66 (0.10–1.47)	0.51 (0.10–1.10)
Count fingers	18 (5)	23 (7)	27 (10)
Hand movements	25 (7)	23 (7)	71 (27)
Perception of light	13 (4)	23 (7)	25 (9)
No perception of light	23 (7)	13 (4)	12 (5)
Measurement not possible	10 (3)	3 (1)	1 (0)
Corneal opacity
CC 0	181 (51)	157 (47)	97 (36)
CC 1	71 (20)	67 (20)	72 (27)
CC 2	46 (13)	68 (21)	68 (25)
CC 3	57 (16)	36 (11)	28 (10)
Phthisis	1 (0)	3 (1)	2 (1)
Trichiasis
Any trichiasis (including epilators)	356 (100)	131 (40)	110 (41)
Any lashes touching cornea	350 (98)	106 (32)	74 (28)
Mean lashes, n	12.6	4.5	3.0
Median of lashes, n (in patients with TT)	8	5	2
Number of lashes touching eye
0	35 (10)‡	263 (62)	182 (68)
1–4	39 (11)	79 (18)	43 (16)
5–9	128 (36)	45 (11)	19 (7)
10–19	81 (23)	20 (5)	11 (4)
20+	73 (21)	19 (5)	11 (4)
Conjunctival inflammation
P0	55 (15)	107 (32)	66 (25)
P1	87 (24)	91 (27)	117 (44)
P2	120 (34)	75 (23)	58 (22)
P3	94 (26)	47 (14)	24 (9)
Not everted/examined	0 (0)	11 (3)	2 (1)
Infection
C. trachomatis present	6 (2)	3 (1)	— —
Pathogenic bacteria present	108 (31)	50 (16)	— —

Data are expressed as the number of subjects (%), unless stated otherwise.

^*Median age at the time of follow-up of patients examined.

^†Arithmetic mean of visual acuities where vision sufficiently good to test with a logMAR chart.

^‡Trichiatic lashes epilated.