Formulas and results of intraocular lens implantation

  • H. Gernet
Part of the Documenta Ophthalmologica Proceedings Series book series (DOPS, volume 53)


The optical eye length cannot be measured by ultrasound because the macular cones do not respond to ultrasound. Given an apopropriate equipment the only measurable distance by ultrasound is the distance to the inner retinal surface, i.e. the inner eye length. To add 0.2 mm to the inner eye length gives us the optical eye length.

In our measuring technique this addition has nothing to do with a fudge factor, it is necessary. For clinicians it would be very helpful if all available ultrasound equipments would work this way even in long eyes.


Refractive Error Regression Formula Retinal Surface Ultrasound Equipment Intraocular Lens Implantation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. [1]
    Gernet H, Ostholt H, Werner H in Ostholt H, Gernet H, Werner H. 1970. Ein neues Haftschalen-Nomogramm für Aphakie. Sitzungsbericht 122. Versammlung des Vereins Rheinisch-Westfälischer Augenärzte 122: 54–55.Google Scholar
  2. [2]
    Retzlaff J, Sanders D, Kraff M: 1982. A manual of implant power calculation. 3rd printing, 7: 1982.Google Scholar
  3. [3]
    Gernet H: 1983. Intraocular lens calculations. Am Intra-Ocular Implant Soc J 9: 195–196.Google Scholar
  4. [4]
    Sanders DR, Retzlaff J, Kraff MC: 1988. Comparison of the SRK II formula and other second generation formulas. J Cataract Refract Surg: 14: 136–141.PubMedGoogle Scholar

Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • H. Gernet
    • 1
  1. 1.44 MuensterGermany

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