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Related Experiment Video

Updated: May 24, 2026

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Surgical Correction for Pediatric Epiblepharon and Trichiasis

Published on: July 8, 2025

Ocular surface area changes after double eyelidplasty.

Ping-Yen Tsai¹, Yi-Chia Wu, Ching-Hung Lai

¹Division of Plastic and Reconstructive Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.

Journal of Plastic, Reconstructive & Aesthetic Surgery : JPRAS

|February 25, 2012

Summary

This summary is machine-generated.

Double eyelidplasty surgery effectively increases ocular surface area (OSA) and reduces eye asymmetry. This study introduces a digital photography method using the iris as a scale for precise OSA measurement before and after the procedure.

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Area of Science:

Ophthalmology
Plastic Surgery
Medical Imaging

Background:

Double eyelidplasty is a prevalent cosmetic procedure in Asia.
Patients often report subjective increases in ocular surface area (OSA) post-surgery.
Objective measurement of OSA is needed for scientific validation.

Purpose of the Study:

To introduce and validate a precise method for measuring ocular surface area (OSA) using digital photography and iris scaling.
To objectively quantify changes in OSA before and after double eyelidplasty.
To assess the impact of double eyelidplasty on ocular asymmetry.

Main Methods:

119 patients (108 female, 11 male) underwent double eyelidplasty, with some also receiving medial epicanthoplasty.
Digital photographs of eyes were taken preoperatively and postoperatively.
ImageJ software was used to measure OSA, comparing preoperative and postoperative values and inter-eye differences.

Main Results:

The average increase in ocular surface area (OSA) was 12.5 ± 8.2% across 238 operative eyes.
Significant reduction in the preoperative-to-postoperative OSA difference between the two eyes of the same patient was observed.
The digital photography method proved easy and convenient for OSA measurement.

Conclusions:

Digital photography with iris scaling offers a simple, convenient, and quantitative method for OSA assessment.
Double eyelidplasty demonstrably increases ocular surface area (OSA).
The procedure also effectively improves ocular asymmetry, providing a more balanced appearance.