From: Causes of poor eye contact in infants: a population-based study
Normal vision at first consultation | Group 1a – idiopathic infantile nystagmus | Group 1b – isolated delayed visual maturation | Group 2 – neurodevelopmental delay | Group 3 – structural ocular abnormality | |
---|---|---|---|---|---|
Number of infants (boys/girls) | 14 (7/7) | 4 (2/2) | 24 (14/10) | 36 (19/17) | 21 (14/7) |
Gestational age (days, median (range))a | 281 (243-292) | 271 (273-291) | 271 (197-292) | 275 (203-297) | 280 (204-294) |
Very preterm (28 – 31 GA, n (%)) | 0 (0%) | 0 (0%) | 2 (8.3%) | 1 (2.8%) | 1 (5.0%) |
Moderate to late preterm (32 - 37 GA, n (%)) | 3 (21.4%) | 0 (0%) | 6 (25.0%) | 8 (22.2%) | 2 (10.0%) |
Born at term (> 38 GA, n (%)) | 11 (78.6%) | 4 (100.0%) | 16 (66.7%) | 27 (75.0%) | 17 (81.0%) |
Pregnancy, eventful/total (n) | 4/14 | 0/4 | 8/24 | 20/36 | 4/21 |
Birth, eventful/total (n) | 3/14 | 1/4 | 7/24 | 19/36 | 6/21 |
Age at referral (weeks), median (range) | 12.4 (6.1-32.1) | 10.0 (9.1-10.4) | 12.0 (5.6-34.7) | 20.4 (0.3-45.0) | 14.7 (4.9-34.7) |
Follow-up (months), median (range) | 0 (0-5.5) | 14.4 (9.6-39.0) | 5.4 (2.0-20.2) | 17.0 (2.0-35.9) | 16.5 (1.0-41.1) |
Referring party, n (%) | |||||
Pediatrician | 4 (28.6%) | 2 (50.0%) | 14 (58.3%) | 30 (83.3%) | 10 (47.6%) |
Centre for rare diseases | 0 (0%) | 0 (0%) | 0 (0%) | 4 (11.1%) | 2 (9.5%) |
Ophthalmologist | 5 (35.7%) | 2 (50.0%) | 5 (20.8%) | 2 (5.6%) | 4 (19.0%) |
General practitioner | 5 (35.7%) | 0 (0%) | 5 (20.8%) | 0 (0%) | 5 (23.8%) |
Diagnostic work-up | |||||
Last VA (logMAR), median (range)b | 0.88 (1.84-0.0) | 0.73 (1.68-0.22) | 0.62 (1.5-0.0) | 0.62 (1.3-0.10) | 0.62 (NLP-0.10) |
Refraction (Diopter), median (range)c | 2.8 (−0.4-3.9) | 2.8 (−0.4-4.4) | 1.9 (−1.3-4.4) | 1.6 (−7.1-8.4) | 2.4 (−6.8-10.0) |
Brain imaging, n/total (%)d | 4/14 (28.6%) | 3/4 (75.0%) | 6/24 (25.0%) | 30/36 (83.3%) | 9/21 (42.9%) |
MRI, n/total (%) | 2/14 (14.3%) | 3/4 (75.0%) | 2/24 (8.3%) | 27/36 (75.0%) | 8/21 (38.1%) |
CT, n/total (%) | 1/14 (7.1%) | 0/4 (0%) | 0/24 (0%) | 6/36 (16.7%) | 0/21 (0%) |
US, n/total (%) | 2/14 (14.3%) | 0/4 (0%) | 4/24 (16.7%) | 11/36 (30.6%) | 2/21 (9.5%) |
Abnormal brain imaging, n/total (%) | 2/4 (50.0%) | 0/3 (0%) | 2/6 (33.3%) | 26/30 (86.7%) | 5/9 (55.5%) |
Urinary metabolic screen, n/total (%) | 1/14 (7.1%) | 0/4 (0%) | 3/24 (12.5%) | 22/36 (61.1%) | 8/21 (38.1%) |
Genetic testing, n/total (%) | 1/14 (7.1%) | 3/4 (75.0%) | 3/24 (12.5%) | 26/36 (75.0%) | 12/21 (57.1%) |
Genetic diagnosis, n/total (%) | 0/1 (0%) | 0/3 (0%) | 0/3 (0%) | 16/26 (61.5%) | 7/12 (58.3%) |
Ocular electrophysiology, n/total (%) | 0/14 (0%) | 4/4 (100%) | 0/24 (0%) | 5/36 (13.9%) | 7/21 (33.3%) |