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NCT07213167 · ClinicalTrials.gov registry record
Clinical Evaluation of Low Contrast Visual Performance and Low Light Phenomena in Patients With Various Intraocular Lens Implants
A clinical trial of Visual Acuity and Visual Function, sponsored by Dr. Daniel H. Chang, MD.
- Recruiting
- Registry status
- 120
- Enrollment target
- 1
- Study location
NCT07213167: Recruiting study of Visual Acuity and Visual Function, sponsored by Dr. Daniel H. Chang, MD.
NCT07213167 is a study of Visual Acuity and Visual Function that is actively recruiting participants, run by Dr. Daniel H. Chang, MD. The registered enrollment target is 120 participants, below the 134-participant average among 20 other Visual Acuity trials with a reported enrollment target (10% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT07213167, a study of Visual Acuity and Visual Function, is actively recruiting participants, sponsored by Dr. Daniel H. Chang, MD.
- RECRUITING
- Registry status
- 120 participants
- Enrollment target
- 1
- Study location
Study Summary
The goal of this clinical investigation is to evaluate visual acuity and contrast sensitivity in low lighting conditions using several different testing devices, and measure nighttime side effects of intraocular lens (IOL) implants after cataract surgery. Researchers will compare the results for three different types of IOLs to see how each lens contributes to overall visual function, patient experience and satisfaction. Participants will: * Complete two different questionnaires about their current vision * Undergo visual testing using several different devices
Primary Outcome
Measured low (50%) contrast defocus curve compared between all three groups
Conditions Studied
Interventions
- OTHER None-placebo
Study Locations (1)
California
- Empire Eye and Laser Center - Bakersfield
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 120 participants |
| Start Date | 2025-09-24 |
| Est. Completion | 2026-03 |
What NCT07213167 shows while recruiting
NCT07213167 is an observational study that tracks outcomes without assigning an intervention. The registered 120 participants enrollment target is mid-sized for trials with a published cap, below the 134-participant average among 20 other Visual Acuity trials with a reported enrollment target (10% lower).
The record links to 5 conditions, with Visual Acuity appearing as the primary indexed condition, and to 1 intervention - of which None-placebo is the first listed.
NCT07213167 reports a single indexed study location in California.
Frequently Asked Questions
What is clinical trial NCT07213167 about?
NCT07213167 is a clinical study titled "Clinical Evaluation of Low Contrast Visual Performance and Low Light Phenomena in Patients With Various Intraocular Lens Implants". The goal of this clinical investigation is to evaluate visual acuity and contrast sensitivity in low lighting conditions using several different testing devices, and measure nighttime side effects of intraocular lens (IOL) implants after cataract surgery. Researchers will compare the results for th...
What is the current status of trial NCT07213167?
This trial is currently recruiting. The enrollment target is 120 participants. The study started on 2025-09-24. Estimated completion is 2026-03.
What conditions does trial NCT07213167 study?
This clinical trial studies the following conditions: Visual Acuity, Visual Function, Posterior Capsule Opacification, Dysphotopsia, Contrast Sensitivity.
What interventions are being tested in trial NCT07213167?
The interventions under investigation include: None-placebo (OTHER).
Who is sponsoring clinical trial NCT07213167?
This trial is sponsored by Dr. Daniel H. Chang, MD, which has 1 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT07213167 being conducted?
This trial has 1 study location across California. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
Similar trials for Visual Acuity
Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.
Where NCT07213167's enrollment target sits among peer trials
120 8th of 20 higher than 13 of 20 other Visual Acuity trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Visual Acuity trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
-
Evaluation of Effect of Scatter on Visual Performance
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-
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-
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Clinical Evaluation of Approved Contact Lenses
COMPLETED · NA
-
Clinical Assessment of Visual Function With the Acrysof ReSTOR Multifocal IOL
COMPLETED · NA
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