NCT04208750 is a Phase 4 clinical trial of Vision R-800 Phoropter in Myopia, sponsored by Pete Kollbaum, OD, PhD.

Who is sponsoring NCT04208750?

NCT04208750 is sponsored by Pete Kollbaum, OD, PhD.

What drugs are being tested in NCT04208750?

Interventions in NCT04208750: Vision R-800 Phoropter, Standard Phoropter.

What condition does NCT04208750 study?

NCT04208750 studies Myopia, Hyperopia, Astigmatism, Presbyopia.

Is NCT04208750 still recruiting?

NCT04208750 is currently completed. Last updated 14 March 2022.

Are results published for NCT04208750?

Yes — primary outcome results have been posted to ClinicalTrials.gov. See the outcomes section above for details.

Last reviewed 2022-03-14 · How we verify

NCT04208750

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

Clinical Investigation of the Vision-R800 Device.

Completed Phase 4 Results posted Last updated 14 March 2022

What this trial tests

Phase 4 trial testing Vision R-800 Phoropter in Myopia in 119 participants. Completed in 1 February 2021.

Timeline

18 November 2019

Primary endpoint
1 February 2021

1 February 2021

Quick facts

Lead sponsor	Pete Kollbaum, OD, PhD
Phase	Phase 4
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	crossover
Masking	none
Primary purpose	diagnostic
Enrollment	119
Start date	18 November 2019
Primary completion	1 February 2021
Estimated completion	1 February 2021
Sites	1 location across United States

Drugs / interventions tested

Vision R-800 Phoropter
Standard Phoropter

Conditions studied

Myopia — all drugs for Myopia →
Hyperopia — all drugs for Hyperopia →
Astigmatism — all drugs for Astigmatism →
Presbyopia — all drugs for Presbyopia →

Sponsor

Pete Kollbaum, OD, PhD

Who can join

Adults 18 to 70, any sex, with Myopia or Hyperopia. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Subjective Questionnaire Response Primary · at Visit 5 (final visit), up to 5 weeks

Patient questions of refraction preference for quickness, efficiency, comfort, and stress

Quickness

Group	Value	95% CI
R-Refraction Then S-Refraction	22
S-Refraction Then R-Refraction	32
R-Refraction Then S-Refraction	5
S-Refraction Then R-Refraction	3
R-Refraction Then S-Refraction	15
S-Refraction Then R-Refraction	11

Efficiency

Group	Value	95% CI
R-Refraction Then S-Refraction	25
S-Refraction Then R-Refraction	26
R-Refraction Then S-Refraction	4
S-Refraction Then R-Refraction	4
R-Refraction Then S-Refraction	13
S-Refraction Then R-Refraction	16

Comfort

Group	Value	95% CI
R-Refraction Then S-Refraction	26
S-Refraction Then R-Refraction	21
R-Refraction Then S-Refraction	5
S-Refraction Then R-Refraction	6
R-Refraction Then S-Refraction	11
S-Refraction Then R-Refraction	19

Stress

Group	Value	95% CI
R-Refraction Then S-Refraction	16
S-Refraction Then R-Refraction	19
R-Refraction Then S-Refraction	7
S-Refraction Then R-Refraction	10
R-Refraction Then S-Refraction	19
S-Refraction Then R-Refraction	17

Sponsor's own description

Randomized, bilateral, cross-over dispensing study of a standard and VR800 refraction and associated spectacle lenses.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

Clinical Comparison of High-resolution and Standard Refractions and Prescriptions.
Meyer D, Rickert M, Reed O, Joret P, et al · · 2023 · PMID 37861987 · DOI 10.1097/opx.0000000000002076

Verify or expand the search:

Other recruiting trials for Myopia

Currently open trials in the same condition.

NCT07284966 — Comfort and Vision With TOTAL30 Multifocal Lenses · recruiting
NCT07078799 — Wavefront-guided LASIK Surgery Compared to Ray Tracing-Guided LASIK Surgery · NA · recruiting
NCT07585877 — Effect of Branched-Chain Amino Acid Supplementation on Myopia Progression · NA · active not recruiting
NCT07354945 — An Evaluation of Myopia Control Lenses on Wearing Experience in Myopic Children · NA · recruiting
NCT07229365 — Children's Viewing Behavior · NA · recruiting

Other Pete Kollbaum, OD, PhD trials

Trials by the same sponsor.

NCT03585790 — The Impact of Soft Contact Lens Attributes on Symptoms Associated With Digital Eye Strain in Symptomatic Soft Contact Le · NA · completed

Verify against primary sources

ClinicalTrials.gov — authoritative US registry record
WHO ICTRP — international registry index
EU Clinical Trials Register
Sponsor press releases (Google)

Data sources for this page

Trial protocol + status: ClinicalTrials.gov NCT04208750 (US National Library of Medicine, public domain)
Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Pete Kollbaum, OD, PhD
Last refreshed: 14 March 2022

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04208750.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing