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Vienna 2018 Delegate Registration Programme Exhibition Virtual Exhibition Satellites 2018 Survey


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Crystalline lens radius of curvature analysis with anterior segment swept-source OCT Casia2 (Tomey)

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Session Details

Session Title: Anterior Segment Imaging II

Session Date/Time: Tuesday 25/09/2018 | 08:00-10:30

Paper Time: 09:04

Venue: Room A4

First Author: : M.Puech FRANCE

Co Author(s): :    N. Abraham   K. Hawa                 

Abstract Details


To analyse crystallyne lens anterior (RFront) and posterior radius of curvature (RBack) compared to lens positioning.


XV-XX Hospital, Explore Vision Paris France


Cristallyne lens radius of curvature (Front and Back) can be compared to lens positioning based on anterior chamber depth, lens thickness, lens vault and lens equator positionning (Corneal Endothelial to Equator diameter distance EED).134 eyes (76 patients, mean age 58 year+/-12) have been divided in 9 groups, based on EED and lenght thickness. Left column : lens (>2,35mm), central column : 4,35>LT(mm)>4,97, rigth column : lens (> 4,97mm). Each column is divided in 3 lines based on CEED : CEED <3,55mm, CEED 3,55 to 4,10mm, CEED >4,10mm Analysis of Mean radius of curvature in each group is compared to lens positioning.


Mean parameters : ACD : 2,34 +/- 0,27 mm, LV : 0,720 +/- 0,218 mm, CEED : 3,82 +/- 0,28 mm, LT : 4,66 +/- 0,31 mm, Mean radius of curvature anterior (R Front) : 9,29 +/- 1,21 mm and posterior (R Back) : 5,59 +/- 0,45 mm. In each column the higher the CEED the higher the ACD and the higher the CEED, the lower the LV.


Casia2 SS OCT gives new apporach on anterior segment analysis with lens equator location. CEED is a new mesurement correlated to lens positionning, to ACD and to lens vault. This CEED can quantify lens factor in case of narrow angle.

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