gms | German Medical Science

102. Jahrestagung der DOG

Deutsche Ophthalmologische Gesellschaft e. V.

23. bis 26.09.2004, Berlin

Clinical importance of the lens opacities classification system III (LOCS III) in phacoemulsification

Meeting Abstract

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  • corresponding author G. Bencic - Eye Clinic, University Hospital "Sestre milosrdnice", Zagreb, Croatia
  • M. Zoric-Geber - Eye Clinic, University Hospital "Sestre milosrdnice", Zagreb, Croatia
  • Z. Mandic - Eye Clinic, University Hospital "Sestre milosrdnice", Zagreb, Croatia

Evidenzbasierte Medizin - Anspruch und Wirklichkeit. 102. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft. Berlin, 23.-26.09.2004. Düsseldorf, Köln: German Medical Science; 2004. Doc04dogDO.04.04

The electronic version of this article is the complete one and can be found online at:

Published: September 22, 2004

© 2004 Bencic et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.




To compare the correlation of features of cataracts graded by the Lens Opacities Classification System, version III (LOCS III) with recorded operative characteristics during the phacoemulsification.


The retrospective study of 216 cases operated on by a single surgeron from October 2003 to January 2004. The cataract was graded at the biomicroscope using the 4 grading scales of the lens opacities classification system, version III (LOCS III); nuclear opalescence (NO), nuclear color (CO), cortical cataract (C) and posterior subcapsular catract (P). We recorded 2 intraoperative characteristics: machine masured phacoemulsification time, and average machine power.


The machine recorded phacoemulsification time and average power correlated positively with the estimated nuclear color (NC) scale and nuclear opaclescence (NO) scale. Grading within categories of cortical catract (C) and posterior subcapsular cataract (P) did not correlate with any of the operative variables. Exponentially, greater phacoemulsification energy was required as NC and NO increased.


LOCS III grading system enables the surgeon to anticipate potential pitfalls and to adapt the operative technique to the individual patient.