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Optical coherence tomography reveals new insights into the accommodation mechanism

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Session Details

Session Title: Imaging Anterior Segment

Session Date/Time: Monday 07/09/2015 | 14:30-16:30

Paper Time: 16:24

Venue: Room 11

First Author: : M.Farouk EGYPT

Co Author(s): :    T. Naito   K. Sayed                 

Abstract Details

Purpose:

To evaluate the movement of the anterior and posterior lens poles during naturally stimulated accommodation in children using anterior segment optical coherence tomography (OCT).

Setting:

Prospective, observational, noncomparative case series.

Methods:

This study included 18 eyes of nine children (8 males and 1 female).Analysis of the anterior segment in the accommodated and unaccommodated state (with cycloplegia) was done using anterior segment OCT.The main outcome Measures are The position of the anterior and posterior lens poles in relation to the cornea and lens thickness

Results:

A statistically significant forward movement of the anterior lens pole and backward movement of the posterior lens pole with an increase in LT were found during accommodation (P < 0.001). There was no significant difference between the degree of movement of the anterior and posterior lens poles during accommodation (P = 0.944).

Conclusions:

Anterior segment OCT provides a rapid non-contact method for studying accommodation in children. The backward movement of the posterior lens pole during accommodation nearly equals that of the forward movement of the anterior pole. These data minimize the hydraulic effect of the vitreous on the lens during accommodation, adding more support to the capsular theory of Helmholtz.

Financial Interest:

NONE

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