# Changes of Trace Elements in Aqueous Humor, Blood and Tears and Analysis of Related Factors

> **NCT04515030** · — · COMPLETED · sponsor: **Zhongshan Ophthalmic Center, Sun Yat-sen University** · enrollment: 167 (actual)

## Conditions studied

- Primary Glaucoma

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04515030
- **Lead sponsor:** Zhongshan Ophthalmic Center, Sun Yat-sen University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-08-20
- **Primary completion:** 2022-10-20
- **Final completion:** 2022-10-20
- **Target enrollment:** 167 (ACTUAL)
- **Last updated:** 2022-12-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04515030

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04515030, "Changes of Trace Elements in Aqueous Humor, Blood and Tears and Analysis of Related Factors". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT04515030. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*