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First clinical results in 30 eyes with a novel ocular biometer for IOL power calculation.

Session Details

Session Title: Cataract 1
Session Date/Time: Friday 20/02/2015 | 10:30-12:30
Paper Time: 10:42
Venue: Sadirvan B
First Author: : A.Cummings IRELAND
Co Author(s): :    D. Bogusevschi   A. Noland   M. Maria Galligan   M. Mrochen     

Abstract Details

Purpose:

Feasibility study on IOL power calculation based on ocular parameters measured by means of a novel Purkinje imaging technique combined with an optical coherence method.

Setting:

Wellington Eye Clinic, Dublin, Ireland

Methods:

Thirty eyes scheduled for cataract surgery were enrolled into this prospective feasibility study. All eyes underwent pupil dilation to at least 5 mm pupil diameter before the eyes were measured with a standard of care (SOC) corneal tomography and ocular biometry. After that the eyes were measured by means of a prototype ocular biometry device that consists of a Purkinje imaging technique combined with an optical coherence method . The obtained ocular parameters from each were statistically compared by means of regression analysis, bland altman plots and paired descriptive statistics, where applicable.

Results:

All correlation coefficients (r) for the ocular parameter: anterior radius of curvatures, posterior radius of curvatures, anterior chamber depth, lens thickness, axial length were found to be r > 0.95 compared with the SOC devices. The SOC ocular biometry device did not provide any measurements of the posterior corneal surface, anterior and posterior lens.

Conclusions:

The new ocular biometry system to provide comparable ocular parameters with SOC devices. However, SOC devices do not provide information about the lens geometry. The new device allow a complete reconstruction of the eye parameter suitable for optical ray tracing to calculate intraocular lens power and postoperative lens position without regression formula.

Financial Disclosure:

One or more of the authors has significant investment interest in a company producing, developing or supplying product or procedure presented, One or more of the authors travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, One or more of the authors receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, One or more of the authors is employed by a for-profit company with an interest in the subject of the presentation

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