Lubricating eye drops with a single-polymer or dual-polymer formulation and saline were all effective in reducing epithelial surface irregularity along the horizontal meridian in a study published in Optometry and Vision Science.
“The purpose of this study was to compare changes in epithelial irregularity factor in a population with symptoms of dry eye before and up to 4 weeks after treatment with two commercially available eye drops, a dual-polymer formulation containing hydroxypropyl guar and hyaluronic acid, and a single-polymer formulation containing hyaluronic acid, versus