Impact of Gonioscopy on Corneal Measurements
Author Information
Author(s): George Mathew K, Kuriakose Thomas, DeBroff Brian M, Emerson John W
Primary Institution: Yale University
Hypothesis
Does gonioscopy affect corneal curvature measurements and surface topography?
Conclusion
Gonioscopy causes temporary steepening of the corneal surface, which normalizes after 20 minutes.
Supporting Evidence
- Significant steepening of Sim K was observed in the first 5 minutes after gonioscopy.
- No significant changes were noted with Auto-K measurements.
- The type of gonioscope used did not significantly affect the results.
Takeaway
When doctors check your eyes after a procedure called gonioscopy, it can change how your eye looks for a little while, but it goes back to normal after 20 minutes.
Methodology
A prospective clinic-based self-controlled comparative study measuring corneal curvature before and after gonioscopy.
Potential Biases
Potential bias from using different instruments for measurements.
Limitations
The study excluded patients with certain eye conditions, which may limit generalizability.
Participant Demographics
99 patients aged 50-75, with 68 males and 31 females.
Statistical Information
P-Value
p = 0.002 for Sim K at 10-15 minutes
Confidence Interval
CI (+0.164, +1.172) for Sim K at <5 mins
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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