内蒙古通辽市杨永泉同志来信称自己是本刊的“铁杆儿”读者;辽宁省沈阳市高桂英同志是本刊每年度阅读知识竞赛的积极参与者。他们分别在信中述说了自己患干眼症的苦恼——因视力下降影响了正常阅读。看来,干眼症在老年人中并不少见。应该如何预防和治疗?本期特请眼科专家予以解读。 Comrade Yang Yongquan of Tongliao City, Inner Mongolia, wrote in a letter that he is the reader of this magazine. Comrade Gao Guiying of Shenyang City, Liaoning Province, is an active participant in this magazine’s annual knowledge contest. In the letter, they each stated their distress for dry eye - a loss of vision that affected normal reading. It appears that dry eye is not uncommon in the elderly. How to prevent and treat? This issue please ophthalmologist to interpret.