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OpenTrials
Completed

NCT Number: NCT04474782

Analysis of Defocus Curve of Pre-Presbyopic and Emerging Presbyopic Patients

Educating patients on visual performance with presbyopic correcting intraocular lenses is crucial. Understanding the defocus curve of pre-presbyopic and emerging presbyopic crystalline lens will provide eye care provides useful information to better educate patients on visual performance expectations after cataract surgery with a presbyopic correcting intraocular lens. Our objective will be to assess the subjective range of clear vision of a pre-presbyopic and emerging presbyopic patient population utilizing a defocus curve. A comparison of the pre-presbyopic and emerging presbyopic defocus curve to all FDA-approved presbyopic intraocular lenses will be discussed in the manuscript.

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Key information

Conditions

Presbyopia Eye Diseases Refractive Errors

Age range

37 year–48 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Vance Thompson Vision

Sioux Falls, South Dakota, 57108, United States

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Able and willing to provide written informed consent on the IRB approved Informed Consent Form
  • 37-48 years of age
  • Phakic

Exclusion criteria

  • Previous cataract surgery
  • Any pathology for which, in the investigator's judgement, could reduce the subjects BCVA
  • Subjects that are unable to obtain 20/20 BCVA (i.e. amblyopia, etc.)

Treatment and study plan

There is not an intervention

Diagnostic Test

There is not an intervention

Primary outcomes

  1. Change in LogMar visual acuity during vision testing on ETDRS with loose lenses

    Time frame: Screening/enrollment visit

Sponsors and collaborators

Lead sponsor

Vance Thompson Vision

Other

Collaborators

  • Alcon Research

Registry information

Important dates

Study start
2019
Primary completion
2020
Study completion
2020
First posted
Jul 17, 2020
Registry last updated
Mar 30, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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