June 2021
Volume 62, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2021
To compare the accuracy of intraocular lens calculation formulas in the prediction of postoperative refraction in eyes with short axial length (<22mm)
Author Affiliations & Notes
  • Sheetal Shirke
    Ophthalmology, Northern health, Victoria, Australia
  • Nishant Gupta
    Ophthalmology, Northern health, Victoria, Australia
  • Suheb Ahmed
    Ophthalmology, Northern health, Victoria, Australia
  • Footnotes
    Commercial Relationships   Sheetal Shirke, None; Nishant Gupta, None; Suheb Ahmed, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2021, Vol.62, 563. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Sheetal Shirke, Nishant Gupta, Suheb Ahmed; To compare the accuracy of intraocular lens calculation formulas in the prediction of postoperative refraction in eyes with short axial length (<22mm). Invest. Ophthalmol. Vis. Sci. 2021;62(8):563.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose : Accurate intraocular lens (IOL) power calculation in cataract surgery is very important to achieve the postoperative target refraction and high patient satisfaction. For short eyes, the IOL power calculation formulas are less accurate than normal, which presents challenges for cataract surgeons. In this study, we aim to compare the refractive outcome using different IOL calculation formulas (Barrett Universal II, Haigis, Hoffer Q, Holladay 1, Olsen, and SRK-T, Hill BRF II, Kane and EVO 2.0)

Methods : This was a retrospective chart review conducted for adult patients who underwent uncomplicated cataract surgery with implantation of monofocal posterior chamber intra ocular lens at Broadmeadows hospital during Jan 2012- Jan 2020. All patients received implantation of an Acrysof IQ SN60WF. Post op refraction was done at minimum4weeks post operatively. In patients whose both eyes satisfied the inclusion criteria, only one eye as randomly selected. Post op mean refractive error (ME) and mean absolute refractive error (MAE) were calculated, before and after adjusting the mean to zero, for each formula and compared.

Results : Total 129 eyes were included. Mean post op refraction was - 0.61D. Olsen formula had least ME (-0.13D). Mean MAE was minimal for EVO formula before and after adjusting mean to zero.(0.47 and 0.46 respectively). EVO formula also had maximum number of eyes within 0.25D and 0.5D. There was no statistically significant difference in absolute prdictive error after adjusting the mean to zero among these formulas.

Conclusions : The refractive outcome was significantly myopic than expected. EVO formula gave least absolute error aftering djuting to zero though there was no statistical difference among the formulae.

This is a 2021 ARVO Annual Meeting abstract.

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×