4Alexander H, Miller DI. Determining skin thickness with pulsed ultrasound. J Invest Dermatol, 1979,72(1):17.
5Eisenbeiss C, Welzel J, Eichler W, et al. Influence uf body water dis tribution on skin thickness: measurements using high frequency uhra sound. British Journal of Dermatology, 2001,144 ( 5 ) : 947-951.
6Chandra-Sekhar G,Vidya C,Rishita N,et al. An ultrasound biomicroscopic study of the anterior segment in Indian eyes with primary angle-closure glaucoma. J Glaucoma, 2002, 11 (6):502- 507.
7Aung T, Ang LP, Chan SP, et al. Acute primary angle closure:long term IOP outcome in Asian eyes. AM J Ophthalmol, 2001, 131:7-12.
8Allsagoff Z,Aung T,Ang LPK,et al. Long-term clinical course of primary angle closure glaucoma in an Asian population. Ophthalmology, 2003,107 : 2300-2304.