1. Articles from Zhenzhen Liu

    1-3 of 3
    1. Objective quantification of lens nuclear opacities using swept-source anterior segment optical coherence tomography

      Objective quantification of lens nuclear opacities using swept-source anterior segment optical coherence tomography

      Background/aims: The primary objective is to quantify the lens nuclear opacity using swept-source anterior segment optical coherence tomography (SS-ASOCT) and to evaluate its correlations with Lens Opacities Classification System III (LOCS-III) system and surgical parameters. The secondary objective is to assess the diagnostic performance for hard nuclear cataract. Methods: This cross-sectional study included 1222 patients eligible for cataract surgery (1222 eyes). The latest SS-ASOCT (CASIA-2) was used to obtain high-resolution lens images, and the average nuclear density (AND) and maximum nuclear density (MND) were measured by a custom ImageJ software. Spearman's correlations analysis was used to assess associations ...

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    2. Accuracy of new generation intraocular lens calculation formulas in vitrectomized eyes

      Accuracy of new generation intraocular lens calculation formulas in vitrectomized eyes

      Purpose To compare the prediction accuracy of new intraocular lens (IOL) calculation formulas (Barrett Universal II (BUII), Emmetropia Verifying Optical (EVO), Kane and Ladas Super formula) and traditional formulas (Haigis, Hoffer Q, Holladay 1 and SRK/T) with Wang-Koch (WK) axial length (AL) adjustment in vitrectomized eyes. Design Retrospective consecutive case-series study. Methods 111 eyes of 111 patients underwent uneventful phacoemulsification and enVista MX60 implantation following vitrectomy were enrolled and divided into four groups according to whether the vitreous cavity was filled with silicone oil. The performance of each formula was evaluated with or without lens constant optimization. Results Before ...

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    3. Comparison of radius of anterior lens surface curvature measurements in vivo using the anterior segment optical coherence tomography and Scheimpflug imaging

      Comparison of radius of anterior lens surface curvature measurements in vivo using the anterior segment optical coherence tomography and Scheimpflug imaging

      Background: To assess the radius of anterior lens surface curvature (RAL) measurements with anterior segment optical coherence tomography (AS-OCT) in comparison with Scheimpflug imaging. Methods: This prospective, cross-sectional study was carried out at Zhongshan Ophthalmic Center, Guangzhou, China. We enrolled 59 eyes, including 30 eyes from 30 cataractous volunteers (59 to 87 years) and 29 eyes from 29 young participants (19 to 49 years). After mydriasis, the RAL was measured automatically by the built-in software in the AS-OCT (CASIA 2). The Scheimpflug images were measured with the build-in caliper tool of the Scheimpflug camera (Pentacam), and RAL were further calculated ...

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    1-3 of 3
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    1. (3 articles) Sun Yat-Sen University
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