Department of Ophthalmology (S.M., R.Y., Y.J.), Beijing Anzhen Hospital, Capital Medical University, Beijing, China; and Department of Ophthalmology (Z.P.), Beijing Ophthalmology and Visual Science Key Laboratory, Beijing Tongren Hospital, Capital Medical University, Beijing, China.

Address correspondence to Zhiqiang Pan, M.D., Department of Ophthalmology, Beijing Ophthalmology and Visual Science Key Laboratory, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaomin Lane, Dongcheng Distract, Beijing 10005, China; e-mail: [email protected]

The authors have no funding or conflicts of interest to disclose.

S. Miao and Z. Pan have made substantial contributions to conception and design of the study and written the manuscript; R. Yan and Y. Jia searched literature, extracted data from the collected literature, and analyzed the data; S. Miao revised the manuscript; all authors approved the final version of the manuscript.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.eyeandcontactlensjournal.com).

As the present meta-analysis was performed based on previously published studies, no ethical approval and patient consent are required.

The data sets generated and analyzed during this study are available from the corresponding author on reasonable request.