1. Binkhorst RD. Intraocular lens power calculations manual. New York: Binkhorst RD; 1978.
2. Fyodorov SN, Kolonko AI. Estimation of optical power of the intraocular lens. Vestnik Oftalmologic (Moscow). 1967;4:27.
3. Colenbrander MC. Calculations of the power of an iris-clip lens for distance vision. Br J Ophthalmol. 1973;57:735–40.
4. Fyodorov SN, Galin MA, Linksz A. Calculation of the optical power of an intraocular lens. Invest Ophthal. 1975;14:625–8.
5. Binkhorst RD. Pitfalls in the determination of intraocular lens power without ultrasound. Ophthal Surg. 1976;5:69–82. Ophthal Surg. 1975;6(3):17–31.