References
- Mundt GH, Hughes WE Ultrasonics in ocular diagnosis. Am J Ophthalmology. 1956;41:488.
- Ossoinig KC. Standardized echography: Basic principles, clinical applications and results. Mt Ophthalmol Clin. 1979;19:127.
- Frazier-Byrne S, Green R. Examination techniques for the globe. In: Ultrasound of the Eye and Orbit. Mosby;1992: 42–50.
- Brazitikos PD, Tsinopoulos IT, Papadopoulos NT, Fotiadis K, Stangos NT. Ultrasonographic classification and pha-coemulsification of white, senile cataracts. Ophthalmology. 1999;106:2178–2183.
- Assia El, Medan I, Rosner M. Correlation between clini-cal, physical, and histopathological characteristics of the cataractous lens. Graefes Arch Clin Exp Ophthalmol. 1997;235:745–748.
- Heyworth P, Thompson GM, Tabandeh H, McGuigan S. The relationship between clinical classification of cataract and lens hardness. Eye. 1993;7:726–730.
- Tabandeh H, Wilkins M, Thompson G, Nassiri D, Karim A. Hardness and ultrasonic characteristics of the human crys-talline lens. J Cataract Refract Surg. 2000;26:838–841.
- Chylack LT, Leske C, McCarthy D et al. Lens opacities classification system II. Arch Ophthalmol. 1989 ;107 : 991–997.
- Oksala A, Varonen E-R. The echogram of the normal and opaque lens. Acta Ophthalmol. 1965;43:272–280.
- Bettelheim FA, Ali S, White O, Chylack LT Jr. Freezable and non-freezable water content of cataractous human lenses. Invest Ophthalmol Vis Sci. 1986;27:122–125.
- Lahm D, Lee K, Bettelheim FA. Age dependence of freez-able and nonfreezable water content of normal human lenses. Invest Ophthalmol Vis Sci. 1985;26:1162–1165.
- Kanellopoulos JA, Dodick JM, Brauweiler P, Alzner E. Dodick photolysis for cataract surgery. Early experience with the Q-switched neodymium: YAG laser in 100 con-secutive patients. Ophthalmology. 1999;106: 2197–2202.
- Brazitikos PD, D'Amico DJ, Bochow TW, Marcellino G, Hmelar M, Stangos NT. Experimental ocular surgery with a high repetition rate erbium: YAG laser. Invest Ophthalmol Vis Sci. 1998;39:1667–1675.