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Photorefraction screening in premature infants
1Department of Ophthalmology, University of Maryland, School of Medicine, Baltimore.
Ophthalmology
|May 1, 1993
Summary
Photorefraction screening is an acceptable method for detecting ophthalmic abnormalities in premature infants, though success rates can be improved in younger infants. This visual screening aids in early detection of potential vision problems.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Medical Screening Technologies
Background:
- Photorefraction is a key screening tool for identifying amblyogenic ophthalmic abnormalities.
- This technique was integrated into the follow-up care of premature infants.
- The study aimed to evaluate photorefraction's utility in high-risk infants.
Purpose of the Study:
- To assess the applicability of photorefraction screening in premature infants.
- To identify potential visual compromises in this at-risk population.
Main Methods:
- 182 premature infants (over 3 months chronological age) underwent screening with a commercial photorefractor.
- Ophthalmic examinations were conducted concurrently with photorefraction.
- Photorefractions were analyzed by masked observers, with cycloplegia used in most cases.
Main Results:
- The study population had a mean birth weight of 1034.5g and gestational age of 28.2 weeks.
- 18% of infants had ophthalmic abnormalities; screening sensitivity was 77% and specificity 90%.
- Analyzable photorefractions were obtained in 77% of infants, with younger infants (under 3 months corrected age) posing challenges.
Conclusions:
- Photorefraction screening is a viable method for detecting ophthalmic issues in premature infants.
- Improvements in fixation devices may enhance screening success rates in very young infants.
- Further research is needed to optimize photorefraction techniques for this population.