作者单位:Uniformed Serv Univ Hlth Sci, Dept Surg, Bethesda, MD 20814 USA[1]Brooke Army Med Ctr, Dept Ophthalmol, Ft Sam Houston, TX 78234 USA[2]Ft Belvoir Community Hosp, Dept Ophthalmol, Ft Belvoir, VA 22060 USA[3]Madigan Army Med Ctr, Dept Ophthalmol, Tacoma, WA 98431 USA[4]Wilford Hall Eye Ctr, Dept Ophthalmol, San Antonio, TX 78236 USA[5]