July 2019
Volume 60, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2019
Author Affiliations & Notes
  • saraswati sivakumar
    ophthalmology, private office, Sydney, Nova Scotia, Canada
  • Rayirth sivakumar
    student, SYDNEY, Nova Scotia, Canada
  • Footnotes
    Commercial Relationships   saraswati sivakumar, None; Rayirth sivakumar, None
  • Footnotes
    Support  NONE
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 516. doi:
  • Views
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      saraswati sivakumar, Rayirth sivakumar; ANGLE KAPPA IN MYOPES AND HYPEROPES AND ITS ROLE IN MULTIFOCAL LENS IMPLANTATIONS. Invest. Ophthalmol. Vis. Sci. 2019;60(9):516.

      Download citation file:

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

  • Supplements

Purpose : Purpose: Evaluation of angle kappa in individuals with hyperopia and myopia based on refraction and biometric analysis.

Methods : Methods: Angle kappa and spherical equivalent was measured in myopes and hyperopes using patient’s refraction and IOL master 500 (60 eyes were measured in the age group 40-90)

Results : Results: Angle kappa was identified in 60 eyes on biometric analysis. Spherical equivalent was calculated. 25/35 myopes were noted to have an angle kappa with a negative value. 33/35 myopic eyes had an angle kappa of below 0.4 mm. 0.4 mm is the radius of a MFIOL. If the angle kappa size is greater then the radius then there is a risk of decentration of the lens. When observing the angle kappa in hyperopic individuals, 22/25 had an angle kappa with a positive value. 16/25 of the hyperopes had an angle kappa above 0.4mm which puts that percentage at greater risk for intraocular lens decentration.

Conclusions : Conclusion: Refraction may be an independent variable in determining angle kappa size.
Individuals with who had a higher prescription typically had a large angle kappa and mild refractive errors typically had a smaller angle kappa size. There were outliers in both groups who didn’t follow the trend in data, but prescription is still an important factor to consider in refractive surgery.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.


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.