Related Experiment Video
Updated: Jun 17, 2026

Monitoring Dynamic Growth of Retinal Vessels in Oxygen-Induced Retinopathy Mouse Model
Published on: April 2, 2021
Ocular growth and morbidity in preterm children without retinopathy of prematurity
1Department of Ophthalmology, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, 46100, Turkey. drmozdemir@hotmail.com.
Insights
Premature birth without retinopathy of prematurity (ROP) is linked to longer eye growth, but not significant refractive errors. However, conditions like strabismus and amblyopia may be more common in these children.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Developmental Biology
Background:
- Premature birth is a significant risk factor for various ocular abnormalities.
- Retinopathy of prematurity (ROP) is a well-known complication, but ocular outcomes in preterm infants without ROP require further investigation.
Purpose of the Study:
- To investigate ocular growth and associated morbidities in preschool and school-aged children born prematurely but without a history of ROP.
- To determine if prematurity influences refractive errors and other visual functions in children without ROP.
Main Methods:
- A population-based study involving 26 children (5-7 years old) born prematurely without ROP.
- Comprehensive ocular examinations including visual acuity, cycloplegic refraction, color vision, ocular alignment, and anterior/posterior segment assessments.
- Measurements of anterior chamber depth, lens thickness, vitreous length, and total axial length.
Main Results:
- No correlation was found between the degree of prematurity and visual acuity or refractive state.
- Prevalence of strabismus (7.7%), amblyopia (7.7%), and anisometropia (15%) was noted.
- Total axial length and vitreous length showed significant positive correlations with gestational age and birth weight.
Conclusions:
- Increased ocular axial and vitreous length in preterm children without ROP, correlating with gestational age and birth weight, does not lead to significant refractive errors.
- Preterm children without ROP may have a higher prevalence of strabismus, amblyopia, and anisometropia compared to normally delivered children.
Purpose:
To investigate ocular growth and morbidity in both preschool and school-aged children born prematurely without retinopathy of prematurity (ROP).
Methods:
This population-based study was carried out in 26 children, 5-7 years of age, born prematurely without ROP. All children underwent a full ocular examination, including corrected visual acuity, cycloplegic refractive errors, color vision, ocular alignment, and anterior and posterior segment examinations. Anterior chamber depth, lens thickness, vitreous length, and total axial length were measured.
Results:
There was no correlation between the degree of prematurity and visual acuity or refractive state. Two (7.7%) subjects had strabismus, two (7.7%) had amblyopia, and four (15%) had anisometropia. Total axial length was significantly correlated with both gestational age at birth (r=0.822, P<0.001) and birth weight (r=0.569, P=0.003). Similarly, vitreous length was also significantly correlated with gestational age (r=0.744, P<0.001) and birth weight (r=0.553, P=0.004).
Conclusions:
This study showed that although the globe gets longer as gestational age approaches term and as birth weight increases, this condition does not result in any significant refractive error. According to the literature, the prevalence of strabismus, amblyopia, and anisometropia may be higher in preterm children without ROP than in age-matched, normally delivered children.
Related Concept Videos
Diabetic Retinopathy
Photoreceptors and Visual Pathways
Glaucoma: Overview
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Angle Closure Glaucoma: Treatment

