Evaluation of Corneal Hysteresis After Pars Plana Vitrectomy Combined Phacoemulsification and Intraocular Lens Implantation

Overview

Journal Sci Rep

Specialty Science

Date 2022 Aug 26

PMID 36028519

Authors

Manami Ohta

Makiko Wakuta

Ayano Sakuma

Mina Hasegawa

Waka Hamada

Fumiaki Higashijima

Takuya Yoshimoto

Tadahiko Ogata

Yuka Kobayashi

Kazuhiro Kimura

Affiliations

Soon will be listed here.

Abstract

We evaluated the early effects of pars plana vitrectomy (PPV) on corneal biomechanics by comparing corneal hysteresis (CH) after cataract surgery (phacoemulsification and aspiration with intraocular lens implantation; PEA + IOL) alone and PPV combined with cataract surgery. This study included 20 eyes (18 patients), who underwent cataract surgery alone (PEA + IOL group), and 28 eyes (27 patients) who underwent PPV combined with cataract surgery (PPV triple group). The CH was 11.1 ± 1.1, 10.4 ± 1.1, and 11.0 ± 1.0 mmHg in the PEA + IOL group and 11.0 ± 1.4, 9.8 ± 1.4, and 10.6 ± 1.6 mmHg in the PPV triple group, preoperatively, at 2 weeks, and 3 months after surgery, respectively. The CH was not significantly different after surgery in the PEA + IOL group, but decreased significantly in the PPV triple group 2 weeks following surgery (p < 0.01). Intraocular pressure (IOP) and central corneal thickness (CCT) did not change significantly after surgery in either group. Preoperatively, there was a positive correlation between CH and CCT in the PPV triple group, but the correlation disappeared postoperatively. In PPV combined with cataract surgery, CH temporarily decreased postoperatively, independent of IOP and CCT. Removal of the vitreous may reduce the elasticity and rigidity of the entire eye.

Citing Articles

The corneal biomechanical changes of phacoemulsification in cataract patients: A systematic review and meta-analysis.

Li X, Li X, Tan L, Chen H, Lai Y PLoS One. 2025; 20(1):e0317179.

PMID: 39854585 PMC: 11761610. DOI: 10.1371/journal.pone.0317179.

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