Khan FA, Khan Niazi SP, Hussain I. COMPARISON OF THE EFFICACY OF HYDROXYPROPYL METHYLCELLULOSE/ DEXTRAN, SODIUM HYALURONATE AND POLYETHYLENE GLYCOL/PROPYLENE GLYCOL BASED COMMERCIAL ARTIFICIAL TEAR PRODUCTS USING THE NONINVASIVE TEAR FILM BREAKUP TIME. PAFMJ [Internet]. 2020 Feb. 29 [cited 2024 Apr. 19];70(1):153-58. Available from: https://pafmj.org/PAFMJ/article/view/3954