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The Association Between Retinopathy of Prematurity and Ocular Growth
Dimitrios Kardaras1, Eleni Papageorgiou1, Katerina Gaitana2
1Department of Ophthalmology, Medical School, University of Thessaly, Larissa, Greece.
Insights
Retinopathy of prematurity (ROP) in premature infants is linked to slower eye growth and development. Specific changes in axial length, corneal thickness, and weight gain can help predict ROP.
Area of Science:
- Ophthalmology
- Neonatology
- Developmental Biology
Background:
- Retinopathy of prematurity (ROP) is a significant cause of visual impairment in premature infants.
- Understanding the relationship between ocular growth and ROP is crucial for early detection and intervention.
Purpose of the Study:
- To prospectively investigate the association between retinopathy of prematurity (ROP) and ocular growth in premature infants.
- To identify biometric parameters that can predict ROP development in early life.
Main Methods:
- A prospective study involving 100 premature infants (gestational age 24-35 weeks).
- Regular examinations recorded ROP status, axial length (AL), central corneal thickness (CCT), and weight gain using A-scan biometry.
- Multiple regression analysis was used to determine associations between biometric variables and ROP.
Main Results:
- Specific thresholds for weekly changes in AL (<0.095 mm increase), CCT (<0.5 μm reduction), and weight gain (<7%) were associated with ROP development.
- Infants with ROP showed delayed ocular development, characterized by shorter AL and thicker CCT.
Conclusions:
- ROP is associated with delayed ocular development in premature infants.
- Axial length, corneal thickness, and weight gain are valuable indicators for predicting ROP.
- These findings can inform the development of predictive models for ROP.
Purpose:
The purpose of this study was to prospectively investigate the association between retinopathy of prematurity (ROP) and ocular growth in premature infants during the earliest weeks of life.
Methods:
Premature infants in the national ROP screening program were recruited and examined at 1- or 2-week intervals between 30 and 38 weeks of postmenstrual age. One hundred infants with gestational age (GA) between 24 and 35 weeks (30.04 + 2.13), and birth weight (BW) between 550 and 2060 g (1251.45 + 317.19) were included in the study. At each examination, the presence, stage, and zone of ROP were recorded along with axial length (AL), central corneal thickness (CCT), and weight gain. Biometric parameters were measured by A-scan biometry. Study variables included GA, BW, AL, CCT, weight gain, relative weight (RW), and dif_AL, dif_CCT, and dif_weight, which are the differences between two consecutive recordings of the same infant. Multiple regression analysis models were used to determine the association between the study variables and ROP.
Results:
dif_AL, dif_CCT, and RW were the most appropriate variables to detect the optimal threshold points that discriminate ROP: weekly increase of AL < 0.095 mm, weekly reduction of CCT < 0.5 μm, or weekly weight gain < 7% is associated with ROP development.
Conclusions:
ROP is associated with delayed ocular development, as eyes of premature infants with ROP have shorter axial lengths and thicker corneas than eyes of premature infants without ROP. The association of AL, CCT, and weight gain with ROP could be of value for future development of predictive models for ROP.
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