1. Epidemiology of refraction;Sorsby;Int. Ophthalmol. Clin.,1971
2. Determination of the expected power of the implant lens by ultrasound;Oguchi;Ophthalmologica,1975
3. Ultrasonography and lens implantation;Leonard;Ophthalmologica,1975
4. Measurement of the length of the visual axis by ultrasonography in 1.789 eyes;Yu;Chin. J. Opthalmol.,1979
5. The optical design of intraocular lens implants;Binkhorst;Ophthalmic Surg.,1975