J Korean Ophthalmol Soc.  2023 May;64(5):374-381. 10.3341/jkos.2023.64.5.374.

Efficacy of Biometry Using Swept-source Optical Coherence Tomography for Posterior Chamber Phakic Intraocular Lens Implantation

• Jo MS
• Moon JY
• Chung SK
• Kim EK
• Park KH
• Choi JS

• KMID: 2542174
• DOI: http://doi.org/10.3341/jkos.2023.64.5.374

Abstract

Purpose
The proper implantable collamer lens (ICL) size affects ICL stability. This study compared device efficacy using white-to-white diameter (WTW) measurements with Orbscan II and IOL Master 700.
Methods
We retrospectively studied 90 eyes (45 patients) who underwent toric ICL implantation from January 2019 to February 2020 and were followed for 1 year. The correlation between WTW and anterior chamber depth (ACD) for each measuring device was analyzed.
Results
The mean WTW measured by IOL Master 700 and Orbscan II was 12.2 ± 0.3 and 11.6 ± 0.3 mm, respectively, while the mean ACD was 3.28 ± 0.16 and 3.20 ± 0.15 mm. The WTW and ACD measured with IOL Master 700 averaged 0.57 ± 0.12 and 0.08 ± 0.04 mm larger than with Orbscan II. The differences were significant and the regression analysis had high correlations (R² = 0.875 and R² = 0.913, respectively; both p < 0.001).
Conclusions
WTW measured by the IOL Master 700 can be used as a reference either alone or together with the Orbscan II value to determine ICL size.

Keyword

Implantable collamer lens, IOL Master 700, Phakic intraocular lens, White to white diameter