Swept-source OCT optical biometry to detect macular disease in patients scheduled for cataract surgery

Session Details

Session Title: Cataract Surgery Equipment

Session Date/Time: Monday 16/09/2019 | 08:30-10:30

Paper Time: 10:06

Venue: Free Paper Forum: Podium 3

First Author: : M.Pastore ITALY

Co Author(s): :    G. Cirigliano   R. Merli   R. Giglio   L. Belfanti   D. Tognetto                 

Abstract Details

Purpose:

To analyze the central macular imaging acquired by an optical biometer based on Swept-Source OCT scan as a screening strategy for detecting macular diseases in patients scheduled for cataract surgery.

Setting:

Eye Clinic, Department of Medical, Surgical Sciences and Health, University of Trieste, Trieste, Italy.

Methods:

A prospective cross-sectional study of 1634 eyes of 1022 consecutive patients scheduled for cataract surgery. Preoperative examination included a biometrical examination with IOLMaster 700 and SD-OCT device analysis (Spectralis OCT, Heidelberg Engineering, Heidelberg, Germany) on the same day. An independent external operator exported anonymously and randomized all SS-OCT macular scans and SD-OCT imaging. Seven examiners graded the scans individually in a full-masked mode.

Results:

In 38 eyes the media opacities precluded the SD-OCT acquisition and were excluded. Overall 1596 included eyes, SD-OCT examination revealed a macular pathology in 695 eyes (43.6%), with normal macular scan in 901 eyes (56.4%). Statistical analysis of the agreement among the different examiners revealed a mean Kendall's Coefficient (W) of 0.83. A logistic regression model demonstrated a highly significant correlation (p<0.001) between the coefficient of concordance W and SD-OCT imaging. Optical biometer SS-OCT scans showed a mean sensitivity of 0.81 and a mean specificity of 0.84. The positive and negative predictive value detected was 0.78 and 0.86, respectively.

Conclusions:

Although the SS-OCT foveal scan was developed to analyze the correct alignment of the optical axis during the axial length measurement, this imaging has proven to be a useful modality for detecting macular structural abnormalities in patients undergoing cataract surgery. Conventional SD-OCT remains mandatory to confirm the presumed diagnosis.

Financial Disclosure:

None