June 2020
Volume 61, Issue 7
Free
ARVO Annual Meeting Abstract  |   June 2020
Comparison of Scleral-Fixated Intraocular Lens Position Meassured with Anterior Segment Swept-Source OCT and Ultrasound Biomicroscopy
Author Affiliations & Notes
  • Mairghread Casey
    Ophthalmology , The Ohio State University , Columbus, Ohio, United States
  • Matthew D. Karl
    Ophthalmology , The Ohio State University , Columbus, Ohio, United States
  • Cynthia J Roberts
    Ophthalmology , The Ohio State University , Columbus, Ohio, United States
  • Matthew Ohr
    Ophthalmology , The Ohio State University , Columbus, Ohio, United States
  • Footnotes
    Commercial Relationships   Mairghread Casey, None; Matthew Karl, None; Cynthia Roberts, Heidelberg Engineering (R), Oculus (C), Optimo Medical (C), Optimo Medical (S), STAAR Surgical (R), Ziemer (C); Matthew Ohr, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2020, Vol.61, 2564. doi:
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      Mairghread Casey, Matthew D. Karl, Cynthia J Roberts, Matthew Ohr; Comparison of Scleral-Fixated Intraocular Lens Position Meassured with Anterior Segment Swept-Source OCT and Ultrasound Biomicroscopy. Invest. Ophthalmol. Vis. Sci. 2020;61(7):2564.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Intraocular lens (IOL) position is an important factor affecting visual acuity following complicated cataract extractions. To date, there have been no reports on scleral-fixated lens position measured with anterior segment swept-source OCT. IOL position has previously been imaged with anterior segment ultrasound biomicroscopy, allowing for calculations of lens tilt and decentration. We performed a retrospective, observational clinical study comparing effective lens position, horizontal IOL decentration and IOL tilt of scleral-fixated IOLs measured with anterior segment swept-source OCT and ultrasound biomicroscopy.

Methods : The IOL position of 11 scleral-fixated IOLs in 11 patients were imaged with both anterior segment swept-source OCT (ANTERION TM, Heidelberg Engineering, Franklin, MA) and ultrasound biomicroscopy (AVISO TM, Quantel Medical, Cournon d'Auvergne, France). Effective lens position (ELP) was measured from the posterior cornea to the anterior surface of the IOL. Horizontal IOL decentration and IOL tilt were calculated with reference to a horizontal baseline drawn between scleral spurs. Difference in mean ELP, horizontal IOL decentration and IOL tilt measured with each imaging modality were analyzed for statistical significance using a paired sample t-test.

Results : Mean ELP measured with anterior segment swept-source OCT (4.90mm, SD 0.34 mm) was significantly greater (p = 0.01) compared to mean ELP measured with UBM (4.47mm, SD 0.55mm). Mean horizontal IOL decentration measured with anterior segment swept-source OCT (0.42mm, SD 0.36mm) was not significantly different (p = 0.54) from mean horizontal IOL decentration measured with UBM (0.49mm, SD 0.40mm). Mean IOL tilt measured with swept-source OCT (1.30, SD 1.05 degrees) did not significantly differ (p= 0.44) from mean IOL tilt measured with UBM (2.11, SD 3.31 degrees).

Conclusions : Our study demonstrated the use of anterior segment swept-source OCT as an imaging modality for evaluation of lens position following placement of a scleral-fixated IOL. While ELP was estimated to be slightly greater on OCT than when measured with UBM, neither IOL decentration or IOL tilt calculations differed significantly between the two imaging groups. This suggests anterior segment swept-source OCT may be used as a rapid, noncontact alternative for measuring IOL position in future studies.

This is a 2020 ARVO Annual Meeting abstract.

 

 

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