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Clinical Trial
. 2023 Nov 6:17:3389-3396.
doi: 10.2147/OPTH.S436825. eCollection 2023.

A Comparison of Adjustable Positioning and Free Positioning After Pars Plana Vitrectomy for Rhegmatogenous Retinal Detachment: A Prospective Randomized Controlled Study

Qianqian Liang  1   2   3 , Difang Sun  1   2   3 , Shuyue Xue  1   2   3 , Xinying Li  1   2   3 , Xin Liu  1   2   3 , Qing Du  1   2   3 , Zhichun Zhang  1   2   3 , Xiubin Ma  1   2   3 , Jun Li  1   2   3
Affiliations
Clinical Trial

A Comparison of Adjustable Positioning and Free Positioning After Pars Plana Vitrectomy for Rhegmatogenous Retinal Detachment: A Prospective Randomized Controlled Study

Qianqian Liang et al. Clin Ophthalmol. .

Abstract

Purpose: To compare the effectiveness and safety of adjustable and free postoperative positioning after pars plana vitrectomy (PPV) for rhegmatogenous retinal detachment (RRD).

Design: Prospective, randomized controlled study.

Methods: A total of 94 eyes with RRD were enrolled from April 2020 to April 2023 and monitored postoperatively for at least 3 months. All patients underwent PPV combined with silicone oil injection or gas tamponade and were randomly divided postoperatively into two groups: an adjustable positioning group and a free positioning group. The success of the outcome was based on the retinal reattachment rate, best corrected visual acuity (BCVA), postoperative complications, and ocular biometric parameters such as anterior chamber depth (ACD) and lens thickness (LT).

Results: The initial retinal reattachment rate was 97.9% in the adjustable positioning group and 95.7% in the free positioning group, manifesting no statistical difference between the two groups. Similarly, no statistical difference was observed between the two groups in the final BCVA, which was significantly improved compared to the preoperative BCVA. The comparison of the 1-month postoperative ACD and LT with the preoperative values showed no statistically significant differences in the two groups. The rates of complications were not statistically different in the two groups.

Conclusion: After treating RRD using PPV, neither the adjustable nor the free postoperative positioning affected the retinal reattachment rate or the incidence of complications. Therefore, our study showed that it is safe and effective to adopt free positioning postoperatively, which may provide more options for patients with RRD undergoing PPV.

Keywords: adjustable positioning; free positioning; pars plana vitrectomy; rhegmatogenous retinal detachment.

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Conflict of interest statement

All authors: No declared conflicts of interest.

Figures

Figure 1
Figure 1
Diagram of retina tear and postoperative positioning. (A) Upright positioning in the adjustable or free positioning. (B) The location of the superior, temporal/nasal and inferior retina tear (RT) in the upright positioning. (C) Lateral positioning in the adjustable positioning. (D) The location of the superior, temporal/nasal breaks and inferior RT in the lateral positioning. (E) Face-up positioning in the free positioning. (F) The location of the superior, temporal/nasal and the inferior RT in the face-up positioning.
See this image and copyright information in PMC

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