17- Goto E, Yagi Y, Matsumoto Y, Tsubota K. Impaired functional visual acuity of dry eye patients, Am J Ophthalmol. 2002; 133:181-186. PMID:11812420

17- Goto E, Yagi Y, Matsumoto Y, Tsubota K. Impaired functional visual acuity of dry eye patients, Am J Ophthalmol. 2002; 133:181-186. PMID:11812420