Accuracy of Intraocular Lens Power Calculation Using Anterior Chamber Depth from Two Devices with Barrett Universal II Formula.

Autor: Muniz Castro H; UT Health Science Center, Houston, TX, USA., Tai AX; UC Irvine Department of Ophthalmology, Gavin Herbert Eye Institute, Irvine, CA, USA., Sampson SJ; Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA, USA., Wade M; UC Irvine Department of Ophthalmology, Gavin Herbert Eye Institute, Irvine, CA, USA., Farid M; UC Irvine Department of Ophthalmology, Gavin Herbert Eye Institute, Irvine, CA, USA., Garg S; UC Irvine Department of Ophthalmology, Gavin Herbert Eye Institute, Irvine, CA, USA.
Jazyk: angličtina
Zdroj: Journal of ophthalmology [J Ophthalmol] 2019 Sep 23; Vol. 2019, pp. 8172615. Date of Electronic Publication: 2019 Sep 23 (Print Publication: 2019).
DOI: 10.1155/2019/8172615
Abstrakt: Purpose: To compare the preoperative measurements of the anterior chamber depth (ACD) by the IOLMaster and Catalys; additionally, to compare the accuracy of the IOL power calculated by the Barrett Universal II formula using the two different measurements.
Setting: University of California, Irvine, Gavin Herbert Eye Institute in Irvine, California.
Design: Retrospective comparative study.
Methods: This study included 144 eyes of 90 patients with a mean age of 72.0 years (range 40.8 to 92.1 years) that underwent femtosecond laser-assisted cataract surgery using Catalys. Preoperative measurements of ACD were taken by the IOLMaster and Catalys. Manifest refraction and refractive spherical equivalent were measured 1 month postoperatively. Expected refractive results were compared with actual postoperative refractive results.
Results: The correlation between the ACD values from the two devices was good ( r  = 0.80). The Catalys ACD measurements yielded a larger ACD compared to the IOLMaster, with a mean difference of 0.22 mm ( P < 0.0001). The correlation between the postoperative and predicted RSE of the implanted IOL power was excellent ( r  = 0.96). There was no statistically significant difference between the mean absolute error derived from the IOLMaster, 0.37 diopter (D) ± 0.34 (SD), and the Catalys, 0.37 ± 0.35 D ( P =0.50).
Conclusions: The Catalys biometry yielded a significantly larger ACD value than the IOLMaster. This difference in ACD value, however, did not reflect in a statistically significant difference in IOL power calculation and refractive prediction error using the Barrett Universal II Formula.
Competing Interests: The authors declare that they have no conflicts of interest.
(Copyright © 2019 Hannah Muniz Castro et al.)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje