Luminous Efficiency Function V(λ)' of Patients That Underwent Pseudophakic Presbyopic Corrections With EDOF IOLs

Primary objective of this study is to introduce a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients who underwent pseudophakic presbyopic correction with extended-depth of focus (EDOF) intraocular lenses (IOLs) implantations.

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Key information

Conditions

Presbyopia Eye Diseases Refractive Errors

Age range

45 year–75 year

Sex eligibility

All sexes

Study type

Observational

Primary location

University Hospital of Alexandroupolis

Alexandroupoli, Evros, 68100, Greece

Location status: Recruiting

About this study

Present study aims to identify in which degree EDOF IOLs modify eye light transmission and estimate the necessary task and environmental lighting adjustment in order to address lighting needs of patients following pseudophakic presbyopic corrections implanted with EDOF IOLs. Specifically, the aim of this study is to identify the minimum light intensity at which patients who underwent pseudophakic presbyopic correction with EDOF IOLs can reach their maximum visual acuity (measured when lights are at the 100% lighting level)

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

age between 45 to 75 years

Exclusion criteria

astigmatism >1.00 diopters
glaucoma
former incisional eye surgery
corneal or fundus disease
diabetes mellitus
autoimmune diseases
neurological or psychiatric diseases
posterior capsule rupture or lens misalignment
postoperative uncorrected distance visual acuity < 8/10.

Treatment and study plan

Phacoemulsification with EDOF IOLs

Procedure

Uneventful pseudophakic presbyopic correction with EDOF IOLs

Primary outcomes

Minimum Required Illuminance Level (MRIL)

Time frame: 6 months postoperatively

Minimum Required Illuminance Level (MRIL) (in lx) at which participants reach their optimal Uncorrected Distance Visual Acuity.

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Sponsors and collaborators

Lead sponsor

Democritus University of Thrace

Other

Registry information

Official study title

Impact of Artificial Lighting on Visual Acuity After Presbyopia Correction With an Extended Depth of Focus Intraocular Lens: Introduction of a Modified Luminous Efficiency Function V(λ)'

Acronym: V(λ)'_EDOF

Important dates

Study start: 2025
Primary completion: 2026
Study completion: 2026
First posted: Jul 22, 2025
Registry last updated: Feb 24, 2026

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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