Evaluation of axial eye length measurements using intra-operative optical coherence tomography of the aphakic eye

Session Details

Session Title: Cataract
Session Date/Time: Friday 21/02/2020 | 10:30-13:00
Paper Time: 12:12
Venue: Fes 1.

First Author: J.Hienert AUSTRIA
Co Author(s): S. Amir-Asgari  N. Hirnschall  O. Findl           

Abstract Details

Purpose:

Comparison of axial eye length measurements using intra-operative optical coherence tomography of the aphakic eye and comparison with pre-operative measurements.

Setting:

Vienna Institute for Research in Ocular Surgery (VIROS), a Karl-Landsteiner-Institute, Hanusch Hospital, Vienna.

Methods:

Patients scheduled for cataract surgery were measured using swept-source optical coherence tomography (ss-OCT, IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany) to assess the axial eye length. Only one eye per patient was included. Intra-operatively, ssOCT measurements were performed with a prototype device (IOLMaster 700 connected to a OPMI Lumera 700 microscope, CZM) at the beginning of cataract surgery and furthermore, of the aphakic and the pseudophakic eye. Measurements were then repeated 2 months after surgery.

Results:

In total, 75 eyes of 75 patients were included in the study. Mean absolute difference was 0.038 mm (SD: 0.072, maximum: 0.258 mm). The relative difference was <0.001 mm (SD: 0.053). Limits of agreement were ±0.104 mm.

Conclusions:

Intra-operative swept source OCT technology of the aphakic eye shows excellent feasibility and high comparability to pre-operative measurements. Therefore, this technique allows axial eye length measurements in all cases with dense cataracts with high precision.

Financial Disclosure: