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Intraocular pressure in premature babies in the first month of life
1Department of Ophthalmology, Catholic University of Roma, Italy.
Insights
Intraocular pressure (IOP) in premature infants generally decreases in the first month of life. However, even moderately elevated IOP may impact ocular perfusion pressure and contribute to retinopathy of prematurity.
Area of Science:
- Ophthalmology
- Neonatology
- Pediatrics
Background:
- Premature infants have unique physiological characteristics.
- Monitoring intraocular pressure (IOP) is crucial in neonatal care.
- Retinopathy of prematurity (ROP) is a significant concern in preterm infants.
Purpose of the Study:
- To investigate intraocular pressure (IOP) trends in preterm infants during their first month of life.
- To establish normative IOP ranges for premature neonates.
- To explore potential clinical implications of IOP variations in this population.
Main Methods:
- A cohort of 20 preterm infants (gestational age 26–32 weeks) was studied.
- Intraocular pressure (IOP) was measured using a hand-held applanation tonometer.
- Measurements were taken shortly after birth and weekly for the first month.
Main Results:
- Intraocular pressure (IOP) values ranged from 7.6 to 18.3 mm Hg.
- A statistically significant decrease in mean IOP was observed, from 13.25+/-2.86 mm Hg to 10.96+/-2.01 mm Hg (P < .001).
Conclusions:
- While observed IOP values were generally not considered pathologic, a lack of expected IOP decrease may have clinical relevance.
- Elevated IOP in preterm infants could reduce ocular perfusion pressure, potentially contributing to retinopathy of prematurity.
- Further investigation is warranted to understand the long-term implications of IOP in preterm neonates.
Purpose:
The purpose of this work was to study the values of intraocular pressure (IOP) in premature babies during the first month of life.
Methods:
Using a hand-held applanation tonometer, IOP was measured in 40 eyes of 20 preterm infants (gestational age ranging from 26 to 32 weeks) shortly after birth and at weekly intervals for the first month of life.
Results:
IOP values in preterm infants ranged from 7.6 to 18.3 mm Hg. The mean IOP decreased during the study period from 13.25+/-2.86 mm Hg to 10.96+/-2.01 mm Hg (P< .001).
Conclusions:
Although the values of IOP found in this study are by no means within the range that is considered to be pathologic for newborns, the possible lack of the decreasing tendency of IOP observed during the first month of life could have, in a given case, some clinical implications. Because systemic blood pressure in preterm infants is already quite low, even a moderately elevated IOP during the first weeks of life might in some cases result in a significant reduction of the ocular perfusion pressure. The latter might play a contributory role in the development of retinopathy of prematurity by decreasing the blood supply to the peripheral retinal tissues.