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Published on: June 2, 2018
Ocular auto-stimulation and its morbidity in stage 5 retinopathy of prematurity
Devesh Kumawat1, Pranita Sahay1, Tanveer Alam1
1Department of Ophthalmology, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.
Insights
Ocular auto-stimulation (OAS) and related eye problems are common in advanced Retinopathy of Prematurity (ROP). Higher post-conceptional age is linked to OAS in these patients.
Area of Science:
- Ophthalmology
- Neonatal care
- Pediatric eye diseases
Background:
- Retinopathy of Prematurity (ROP) is a leading cause of childhood blindness.
- Stage 5 ROP represents the most severe form, characterized by total retinal detachment.
- Ocular auto-stimulation (OAS), or eye-pressing behavior, is frequently observed in infants with severe ROP.
Purpose of the Study:
- To investigate the prevalence, characteristics, and associated morbidities of ocular auto-stimulation (OAS) in stage 5 Retinopathy of Prematurity (ROP).
- To identify factors influencing the occurrence and severity of OAS in this vulnerable population.
Main Methods:
- Retrospective analysis of stage 5 ROP cases from a tertiary care center (January 2017 - December 2017).
- OAS categorized as infrequent or frequent based on parental history.
- B-scan ultrasonography for retinal detachment configuration and automated keratometry in eyes undergoing vitrectomy.
Main Results:
- OAS was present in 78.5% of eyes (73/93).
- Higher post-conceptional age was significantly associated with OAS (P=0.018).
- Enophthalmos was significantly more common in eyes with OAS (P=0.001), while corneal opacity and posterior synechiae showed no significant association.
Conclusions:
- Ocular auto-stimulation and its associated morbidities are prevalent in stage 5 ROP.
- Post-conceptional age and residual visual function appear to influence OAS characteristics.
Purpose:
To evaluate the characteristics and morbidity due to ocular auto-stimulation (OAS) in stage 5 Retinopathy of Prematurity (ROP).
Methods:
Stage 5 ROP cases presenting to ROP clinic of a tertiary care centre from January 2017 to December 2017 were recruited. Eye-pressing was elicited on history from parents and categorized as infrequent (performed <50% of waking time) or frequent (≥50% of time). B-scan ultrasonography was performed for configuration of retinal detachment (open or closed funnel). Keratometry was performed in eyes undergoing vitrectomy under general anaesthesia using automated hand-held keratometer. The outcome measures were the presence and characteristics of OAS, enophthalmos, corneal opacity and keratometry values.
Results:
Out of 93 eyes of 49 babies, 78.5% (n = 73) had OAS. Gestational age, birth weight, sex, retinal funnel configuration, and visual function did not significantly affect OAS. However, post-conceptional age was significantly greater in eyes with OAS (95% CI: 63.1 to 69.9 weeks) than those without OAS (95% CI: 52.4 to 63.4 weeks) (P = 0.018). OAS occurred frequently in 32.8% (n = 24/73) eyes, more commonly in eyes with light followability. Keratometry did not differ significantly with the presence of OAS (P = 0.88). Enophthalmos, corneal opacity, posterior synechiae were noted in 79.5% (58/73), 21.9% (16/73), and 28.8% (21/73) eyes with OAS, respectively. Enophthalmos occurred significantly in eyes with OAS (P = 0.001), while corneal opacity and posterior synechiae did not (P = 0.071 and 0.91, respectively).
Conclusion:
OAS and its resultant morbidity are common occurrences in stage 5 ROP. The post-conceptional age and residual visual function may govern the characteristics of OAS.
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