# Evaluation of Effectiveness of Correcting Refractive Error With Ready-made Spectacles

> **NCT00657670** · NA · COMPLETED · sponsor: **Johns Hopkins University** · enrollment: 800 (estimated)

## Conditions studied

- Myopia
- Hyperopia
- Astigmatism

## Interventions

- **DEVICE:** Ready-made spectacles
- **DEVICE:** Spectacles

## Key facts

- **NCT ID:** NCT00657670
- **Lead sponsor:** Johns Hopkins University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-04
- **Primary completion:** 2008-11
- **Final completion:** 2009-09
- **Target enrollment:** 800 (ESTIMATED)
- **Last updated:** 2009-10-09

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00657670

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00657670, "Evaluation of Effectiveness of Correcting Refractive Error With Ready-made Spectacles". Retrieved via AI Analytics 2026-07-08 from https://api.ai-analytics.org/clinical/NCT00657670. Licensed CC0.

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