Accurate intraocular lens power calculation is an important adjunct to the technique of extracapsular cataract extraction. An increasing number of ophthalmologists now perform preoperative biometry routinely. We studied a group of fifty patients and analysed the accuracy of intraocular lens power calculation using the SRK™ formula.
Singh K and Sommer A : Intraocular lens power calculations: A practical evaluation in normal subjects at the Wilmer Institute. Arch. Opthalmol 1987; 105:1046–50.
Binkhorst RD : Pitfalls in the determination of intraocular lens power without ultrasound. Ophthal Surg. 1976; 7: 69–82.
Colenbrander MD : Calculation of the power of an iris clip lens for distance vision. Br J Ophthalmol 1973; 57: 735–40.
Fyodorov SN, Galin MA, Linksz A : Calculation of the optical power of intraocular lenses. Invest. Ophth. 1975; 14: 625–8.
Binkhorst RD : The optical design of intraocular lens implants. Ophthal Surg. 1975;6:17–31.
Sanders DR and Kraff MC : Improvement of intraocular lens power calculation using empirical data. Am. Intra-Ocular Implant Soc. J. 1980; 6: 263–8.
Retzlaff J : Posterior chamber implant power calculation: regression formulas. Am. Intra-Ocular Implant Soc. J. 1980; 6: 268–71.
Sanders D, et al: Comparison of the accuracy of the Binkhorst, Colenbrander and SRKtm implant power prediction formulas. Am. Intra-Ocular Implant Soc. J. 1981; 7: 337–40.
Kraff MC, Sanders DR, Lieberman HL : Biometric analysis of intraocular lens power required to produce emmetropia: results of 450 implants. Am. Intra-Ocular Implant Soc. J. 1978; 4: 45–7.
Huber C : Planned myopic astigmatism as a substitute for accommodation in pseudophakia. Am. Intra-Ocular Implant Soc. J. 1981; 7: 244–9.
Presented at a meeting of the Irish Ophthalmological Society. June 1987.
About this article
Performance of the SRK/T formula using A-Scan ultrasound biometry after phacoemulsification in eyes with short and long axial lengths
BMC Ophthalmology (2016)
Documenta Ophthalmologica (1994)