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The effectiveness of an autorefractor with eye-tracking capability in pediatric patients
David Kirschen1, Sherwin J Isenberg1
1Jules Stein Eye Institute, Department of Ophthalmology, UCLA School of Medicine, Los Angeles, California.
Insights
A new autorefractor with eye-tracking accurately measures refractive error in children. This device shows promise for efficient pediatric eye examinations in clinical settings.
Area of Science:
- Ophthalmology
- Pediatric Optometry
- Diagnostic Technology
Background:
- Accurate refractive error assessment is crucial for pediatric eye care.
- Traditional methods can be challenging in young or uncooperative children.
- Novel autorefractor technology aims to improve diagnostic efficiency.
Purpose of the Study:
- To evaluate the diagnostic accuracy and effectiveness of a new autorefractor with eye-tracking in children.
- To compare autorefractor measurements with clinical refractions before and after cycloplegia.
Main Methods:
- 88 children aged 3-17 years were tested using the Marco Nidek ARK-560A autorefractor.
- Measurements were taken before and after cycloplegia.
- Data were analyzed using Fourier analysis, comparing autorefractor readings to manifest and retinoscopic determinations.
Main Results:
- The autorefractor successfully obtained measurements in all participants.
- Pre-cycloplegia autorefractor spherical measurements showed less hyperopia than clinical manifest refraction.
- Post-cycloplegia autorefractor spherical measurements were comparable to clinical refractions, though astigmatic findings (J0) showed a small difference.
Conclusions:
- Autorefractors with eye-tracking can effectively estimate manual retinoscopy values in pediatric patients.
- This technology demonstrates potential utility in routine office-based evaluations of children's vision.
Purpose:
To study the diagnostic accuracy and effectiveness in children of a new autorefractor with eye-tracking capability.
Methods:
Children aged 3-17 years were tested with a Marco Nidek ARK-560A autorefractor before and after cycloplegia. Cycloplegic manifest refractions were conducted on the more cooperative children. Measurements were converted to vector representations M (sphere), J0, and J45 (cylinder) by Fourier analysis and compared before and after cycloplegia for autorefractor measurements and clinical manifest and retinoscopic determinations.
Results:
A total of 88 subjects were included. Autorefractor measurements were successfully obtained on all subjects. Before cycloplegia the mean spherical portion of the refractive error by autorefractor measurement (AR Dry) averaged 0.29 ± 0.75 D less hyperopia than the clinical manifest refraction (P < 0.005). After cycloplegia, mean autorefractor measurements (AR Wet) demonstrated 1.03 ± 0.84 D more hyperopia in the spherical component than AR Dry (P < 0.001). The spherical component of autorefraction and clinical measurements after cycloplegia were not statistically different, but the J0 astigmatic findings differed by 0.13 D ± 0.25 (P < 0.0003). For the 27 children under 8 years of age, precycloplegic autorefractor findings differed from manual cycloplegic retinoscopy by 1.48 D ± 1.13 for sphere (P < 0.001) but were not statistically different for astigmatic parameters.
Conclusions:
Autorefractors can estimate manual retinoscopy values in children and may prove useful in the office setting in evaluating pediatric patients. Autotracking allowed successful acquisition of measurements in all subjects.
