# The Effects of Primary Pterygium on Contrast Sensitivity Preoperatively and Postoperatively

> **NCT03406390** · — · UNKNOWN · sponsor: **Zhongshan Ophthalmic Center, Sun Yat-sen University** · enrollment: 60 (estimated)

## Conditions studied

- Primary Pterygium

## Interventions

- **PROCEDURE:** Pterygium surgery

## Key facts

- **NCT ID:** NCT03406390
- **Lead sponsor:** Zhongshan Ophthalmic Center, Sun Yat-sen University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2017-11-01
- **Primary completion:** 2018-11-01
- **Final completion:** 2018-12-31
- **Target enrollment:** 60 (ESTIMATED)
- **Last updated:** 2018-01-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03406390

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03406390, "The Effects of Primary Pterygium on Contrast Sensitivity Preoperatively and Postoperatively". Retrieved via AI Analytics 2026-06-13 from https://api.ai-analytics.org/clinical/NCT03406390. Licensed CC0.

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