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A Novel Method to Measure Artificial Eye Motility.
Daphne L Mourits1, Dyonne T Hartong, Johannes H M van Beek
1Departments of *Ophthalmology, †Ear & Hearing, and ‡Epidemiology & Biostatistics, VU University Medical Center, Amsterdam, The Netherlands.
Ophthalmic Plastic and Reconstructive Surgery
|November 5, 2016
Summary
This study shows that the iView X system reliably measures prosthetic eye motility after enucleation. This noninvasive method offers reproducible results, aiding in assessing cosmetic outcomes.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Prosthetics
Background:
- Enucleation for retinoblastoma necessitates prosthetic eyes, impacting cosmetic outcomes.
- Objective, reproducible, and noninvasive measurement of artificial eye motility is crucial.
Purpose of the Study:
- To objectively measure artificial eye motility noninvasively and reproducibly.
- To assess the reliability of the iView X gaze- and pupil-tracking system for this purpose.
Main Methods:
- Implemented the iView X system with adjusted software to measure horizontal eye motility.
- Tested the system on patients with prosthetic eyes post-enucleation for retinoblastoma.
- Analyzed reproducibility using linear mixed models and inter/intraobserver variations.
Main Results:
- High interobserver reliability (ICC 0.98 for left gaze, 0.96 for right gaze).
- Prosthetic eye motility averaged 57.1% in abduction and 65.8% in adduction compared to the contralateral eye.
- No significant differences in motility based on implant type or size.
Conclusions:
- The iView X system provides reproducible and reliable measurements of prosthetic eye motility.
- This represents a novel, easy-to-use, noninvasive tool for evaluating prosthesis function.
- Implant characteristics did not affect motility outcomes, warranting further investigation.
