Entropic and ectropic lids demonstrate clinically and statistically significant anatomical and functional differences from normal, age-matched lids.
Kevin S. Michels, Craig N. Czyz, Kenneth V. Cahill, Jill A. Foster, John A. Burns,Kelly R. Everman 2014, 'Age-Matched, Case-Controlled Comparison of Clinical Indicators for Development ofEntropion and Ectropion', Journal of Ophthalmologyhttp://dx.doi.org/10.1155/2014/231487. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)