The effect of cycloplegia on corneal power and diameter measured by an auto-kerato-refractometer in presbyopic patients with type 2 diabetes mellitus: a post-hoc analysis of a randomized clinical trial.
BMC OphthalmolSep 18, 2026 (epub)
Navid Elmi Sadr, Leila Ghiasian, Yasaman Hadi et al.
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In 30 seconds
This post-hoc analysis of a randomized controlled trial evaluated the impact of cycloplegia on corneal power and diameter in 88 presbyopic patients with type 2 diabetes. The study found that changes in keratometry and horizontal white to white measurements after cycloplegia were not statistically significant, indicating that these measurements remain reliable post-cycloplegia.
Key findings
- Mean changes in Kf, Ks, Km, CA, and WTW were not statistically significant after cycloplegia.
- In the 0.5% tropicamide group, Kf changed by -0.01 ± 0.26 D.
- In the 1% tropicamide group, CA changed by 0.08 ± 0.29 D.
- Overall, cycloplegia did not significantly alter keratometry or WTW measurements.
Why it matters
Understanding the effects of cycloplegia on corneal measurements is crucial for accurate assessments in diabetic patients, as it ensures that refractive evaluations remain consistent and reliable.