Does the EyeChart App for iPhones Give Comparable Measurements to Traditional Visual Acuity Charts?

Does the EyeChart App for iPhones Give Comparable Measurements to Traditional Visual Acuity Charts?

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Aim: To investigate if the EyeChart app gives accurate visual acuity (VA) measurements that are comparable to those achieved using traditional VA charts.Method: Twenty-four participants (aged 18–27 years, mean 20.13 ± 1.78 years) with VA of 6/60 Snellen or better regardless of any strabismus, amblyopia, or ocular pathology volunteered for this prospective study.The best-corrected monocular VA of each participant’s right eye was measured on the Snellen chart at 6 m, the ETDRS chart at 3 m, and the EyeChart app presented on an iPhone SE at 1.

2 m (4ft).Results: The mean VA scores obtained were: –0.13 ± 0.08 logMAR on the Snellen chart, –0.11 ± 0.

08 logMAR on the ETDRS chart, and –0.09 ± 0.07 logMAR on the EyeChart app.After Bonferroni Correction adjustments were applied, a significant difference was found between Seat Adapters the EyeChart app and the Snellen chart (t = –3.756, p = 0.

003), however the difference between the EyeChart app and the ETDRS chart did not reach statistical significance (t = –2.391, p = 0.076).The EyeChart app had a strong correlation with both the Snellen (r = 0.79, p < 0.

01) and ETDRS charts (r = 0.88, p < 0.01).The Coefficients of Agreement revealed a variation of less than one logMAR line between the EyeChart app and the traditional VA charts (Snellen: 0.09 logMAR; ETDRS: 0.

08 logMAR).Conclusion: This study found that the EyeChart app gives accurate VA scores that are comparable to those achieved using the gold-standard ETDRS chart in a healthy young adult population.However, the accuracy and repeatability of HYALURIONIC ACID DAY CREME the EyeChart app when testing a patient population must be investigated before it can be integrated into clinical practice.