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Published on: March 3, 2023
The usefulness of waveform score from the ocular response analyzer
Andrew K C Lam1, Davie Chen, Jimmy Tse
1*PhD, FAAO †BSc(Hons) School of Optometry, The Hong Kong Polytechnic University, Hong Kong SAR, China.
Summary
The Waveform Score from the ocular response analyzer (ORA) helps determine signal reliability. A score below 3.50 may indicate an unreliable signal, suggesting it should be discarded for accurate results.
Area of Science:
- Ophthalmology
- Optometry
- Biomedical Engineering
Background:
- The ocular response analyzer (ORA) is a tool used in ophthalmology.
- Signal quality is crucial for accurate ORA measurements.
Purpose of the Study:
- To evaluate the utility of the Waveform Score generated by the ocular response analyzer (ORA).
- To establish criteria for signal reliability using the Waveform Score.
Main Methods:
- Sixty-four healthy Chinese adults underwent ORA measurements.
- Waveform analysis was performed by a masked, experienced practitioner.
- Agreement between multiple measurements and a gold standard was assessed.
Main Results:
- No significant differences were found between the gold standard and mean measurements for ORA parameters.
- Waveform Scores ranged from 1.58 to 9.06 across 512 signals.
- A Waveform Score below 3.48 was observed in the lower 10th percentile of signals.
Conclusions:
- A Waveform Score below 3.50 may signify an unreliable ORA signal, warranting its exclusion.
- Taking three measurements with scores of 3.50 or higher is recommended to enhance precision.
