Table 2 Orthoptists and parent/carer’s iSight Test Pro measurements compared to standard clinical care measurements.

From: Children’s visual acuity tests without professional supervision: a prospective repeated measures study

Difference between iSight test pro and clinical tests

Orthoptist iSight test pro measure N (%)

Parent/carer iSight test pro measure N (%)

Within 1 line

53 (63.1)

39 (46.4)

1–2 lines

23 (27.4)

21 (25.0)

2–3 lines

6 (7.1)

12 (14.3)

3–4 lines

0 (0.0)

4 (4.8)

4–5 lines

1 (1.2)

5 (6.0)

5–6 lines

1 (1.2)

1 (1.2)

Greater than 6 lines

0 (0.0)

2 (2.4)

Median difference to clinical standard (25th–75th percentile), logMAR

0.060 (0.020–0.120)

0.100 (0.045–0.200)

Range of differences to clinical standard, logMAR

0–0.500

0–1.280

  1. N = 84 eyes, 42 participants.