Response to Optimizing the Wilkins Egg and Ball Test: Overcoming Limitations for Accurate Astigmatism Detection [Response To Letter]
Year: 2024
Type: letter
Abstract: Optimizing the WilkinsEgg and Ball Test: Overcoming Limitations for Accurate Astigmatism Detection". 1 We welcome the opportunity to engage in this valuable discussion to contribute to the collective knowledge in our field.Our study focused on evaluating the effectiveness of the Wilkins' Egg and Ball Test in identifying uncorrected residual astigmatism and its impact on form symmetry perception.This goal was achieved by testing a normal participant group with induced astigmatism, and two clinical cohorts with keratoconus and astigmatism greater than 1.00DC, using both full and spherical-only corrections.The study's scope was specifically on the test's utility, not its validation, which is a separate consideration for clinical applicability.Thus, we did not "overlook" inter-session repeatability and interobserver reproducibility.However, we do have data from 15 normal participants who were examined with the Wilkins' Egg and Ball Test on two different dates, ranging from 7-15 days apart.Wilcoxon tests comparing the results of each of the conditions found no significant differences between the Z-scores of two sessions (Table 1).Further, ceiling and floor effects are common methodological limitations in clinical tests.Notably, in the near point of convergence test, a substantial proportion of patients demonstrate the capacity to achieve convergence "to the nose" with a documented break point of "0".Similarly, in stereopsis tests, the minimal disparity measured (Titmus Stereofly: 40", 1049
Source: Clinical ophthalmology
DOI: 10.2147/opth.s471148
Authors: Liat Gantz, Joan Gispets, Arnold Wilkins, Eyal Gal
Language: English
Subfield: Ophthalmology
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,320
OpenAlex ID: W4394575775