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NCT04805593 · ClinicalTrials.gov registry record · NA
Clinical Investigation of the WaveLight® EX500 Excimer Laser
A NA study of Hyperopia and Hyperopic Astigmatism, sponsored by Alcon Research.
- Completed
- Registry status
- NA
- Development phase
- 44
- Enrollment target
- 5
- Study locations
NCT04805593: Completed NA study of Hyperopia and Hyperopic Astigmatism, sponsored by Alcon Research.
NCT04805593 is a NA study of Hyperopia and Hyperopic Astigmatism that has completed, run by Alcon Research. The registered enrollment target is 44 participants, below the 120-participant average among 10 other Hyperopia trials with a reported enrollment target (63% lower). The trial reports 5 study locations across 5 states. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04805593, a NA study of Hyperopia and Hyperopic Astigmatism, has completed, sponsored by Alcon Research.
- COMPLETED
- Registry status
- NA
- Development phase
- 44 participants
- Enrollment target
- 5
- Study locations
Study Summary
The purpose of this study is to collect efficacy and safety data on the WaveLight EX500 excimer laser system for the correction of hyperopia with and without astigmatism by laser in situ keratomileusis (LASIK) treatment.
Primary Outcome
A manifest refraction (manual refraction) was performed using a phoropter. The spherical equivalent was calculated by adding the sum of the sphere power with half of the cylinder power. Refractive stability was defined as the latter of two postoperative manifest refractions performed at least 3 months apart (or at 3 months after surgery when compared with the 1-month visit) that meets all the protocol-specified stability requirements. For this endpoint, change in MRSE by less than or equal to 0.
Conditions Studied
Interventions
- PROCEDURE LASIK
- DEVICE WaveLight EX500 excimer laser system
Study Locations (5)
Kansas
- Durrie Vision - Overland Park
Missouri
- Moyes Eye Center - Kansas City
North Carolina
- Physicians Protocol - Greensboro
North Dakota
- Vance Thompson Vision ND - West Fargo
Texas
- Mann Eye Institute - Houston
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 44 participants |
| Start Date | 2021-04-28 |
| Est. Completion | 2023-05-02 |
| Phase | NA |
What the finished NCT04805593 record still lists
NCT04805593 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 44 participants, a relatively small participant target, below the 120-participant average among 10 other Hyperopia trials with a reported enrollment target (63% lower).
The record links to 2 conditions, with Hyperopia appearing as the primary indexed condition, and to 2 interventions - of which LASIK is the first listed.
NCT04805593 lists 5 locations in 5 states (Kansas, Missouri, North Carolina).
Frequently Asked Questions
What is clinical trial NCT04805593 about?
NCT04805593 is a clinical study titled "Clinical Investigation of the WaveLight® EX500 Excimer Laser". The purpose of this study is to collect efficacy and safety data on the WaveLight EX500 excimer laser system for the correction of hyperopia with and without astigmatism by laser in situ keratomileusis (LASIK) treatment.
What is the current status of trial NCT04805593?
This trial is currently completed. It is a NA study. The enrollment target is 44 participants. The study started on 2021-04-28. Estimated completion is 2023-05-02.
What conditions does trial NCT04805593 study?
This clinical trial studies the following conditions: Hyperopia, Hyperopic Astigmatism.
What interventions are being tested in trial NCT04805593?
The interventions under investigation include: LASIK (PROCEDURE), WaveLight EX500 excimer laser system (DEVICE).
Who is sponsoring clinical trial NCT04805593?
This trial is sponsored by Alcon Research, which has 275 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT04805593 being conducted?
This trial has 5 study locations across Kansas, Missouri, North Carolina, North Dakota, Texas. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
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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 NCT04805593's enrollment target sits among peer trials
44 10th of 10 higher than 1 of 10 other Hyperopia trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Hyperopia 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
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