https://www.selleckchem.com/pr....oducts/n-ethylmaleim
When comparing measurements between the apps there was no statistically significant difference on the first or second test, either eye or the interocular acuity difference (p 0.5 in all cases). The results support the theory that changing distance is a valid method of assessing VA as the measurements agree well with the standard approach of reducing optotype size. Test retest variability is similar between the two apps and there is good agreement between the measurements. The results support the theory that changing di