与年龄有关的黄斑变性及玻璃疣,是老年人视力严重丧失的重要原因,其病因未明。鉴于锌在视网膜代谢中起关键作用,而老年人有可能缺锌,故作者进行了为期2年的随机双盲的前瞻性研究,试用硫酸锌治疗因玻璃 Age-related macular degeneration and drusen are important causes of severe vision loss in the elderly and the etiology is unknown. In view of zinc plays a key role in retinal metabolism, while the elderly may lack zinc, so the author conducted a 2-year randomized, double-blind, prospective study of zinc sulfate treatment of glass due to trial