W. Fargo, North Dakota 58078

  • Refractive Errors


To compare the prediction error of ORA vs formula for post-LASIK cataract patients when PanOptix IOL was implanted. Using post-operative outcomes to determine if preoperative IOL calculations, including Barrett TK, Barrett Universal II, Hill RBF, ASCRS post-refractive calculator, or intraoperative aberrometry is more accurate when the two methods disagree in patients who have had previous refractive surgery undergo cataract surgery.

Study summary:

The study will be non-interventional with data being collected prospectively and retrospectively between at least two surgical sites. All subjects will have previous LASIK and be at least 3 months post op PanOptix implantation. The study will enroll up to 200 patients and a statistical database will be created.


Inclusion Criteria: - Previous myopic refractive surgery - At least 3 months post op cataract surgery with a trifocal IOL Exclusion Criteria: - Pre-existing or subsequent eye condition that interferes with accurate data collection (retinal detachment, etc.)



Primary Contact:

Principal Investigator
Michael Greenwood, MD
Vance Thompson Vision ND

Sarah Thiede
Phone: 7015665390
Email: sarah.thiede@vancethompsonvision.com

Backup Contact:


Location Contact:

W. Fargo, North Dakota 58078
United States

Sarah Thiede
Phone: 701-566-5390
Email: sarah.thiede@vancethompsonvision.com

Site Status: Recruiting

Data Source: ClinicalTrials.gov

Date Processed: August 02, 2021

Modifications to this listing: Only selected fields are shown, please use the link below to view all information about this clinical trial.

Click to view Full Listing

If you would like to be contacted by the clinical trial representative please fill out the form below.