Assessing the accuracy of a digital color vision test.

Introduction and objectives: The aim of this study was to assess the precision of a web-based tool in measuring color vision in ophthalmic patients, comparing it to the traditional in-clinic evaluation using the Ishihara test, the most used test in clinical context.

Materials and methods: We conducted a prospective validation comparing the Eyecare Colour Vision Test® to the standard Ishihara test, with patients undergoing both tests sequentially. Patients wore their standard spectacles as needed for both tests. Inclusion criteria involved individuals above 18 years with visual acuity equal to or better than + 1 logMAR (20/200) in each eye. Visual acuity measurements were converted from Snellen to LogMAR, and statistical analyses included Bland-Altman and descriptive statistics.

Results: The study, encompassing 330 patients, compared Eyecare Color Vision Test® to conventional Ishihara test, the score for correct responses by the Eyecare Color Vision Test® was 4073 as compared to 4081 by Ishihara standard test- a concordance rate of 87,88%. Sensitivity of 96.43% (CI 95%, 81.65% to 99.91%), and specificity of 99.34% (CI 95%, 97.63% to 99.92%) for the diagnosis of color vision deficiency.

Conclusion: The Eyecare Color Vision Test® demonstrates accuracy and reliability, with the potential to facilitate remote CVD diagnosis.