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

Democritus University of Thrace

Status: Completed

Conditions: Presbyopia

Treatments: Procedure: Phacoemulsification with bilateral trifocal diffractive IOLs

Study type: Observational

Funder types: Other

Identifiers

NCT04263636

ES11/Th12/27-12-2019

Details and patient eligibility

About

Primary objective of this study is to construct and validate a modified luminous efficiency function that addresses the distinct total eye light transmittance of patients that underwent bilateral pseudophakic presbyopic correction with trifocal intraocular lenses (IOLs) implantations.

Full description

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

Enrollment: 100 patients

Sex: All

Ages: 45 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• age between 45 to 70 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 bilateral distant visual acuity < 8/10.

Trial design

100 participants in 2 patient groups

Study group

Description:

Patients that underwent uneventful bilateral pseudophakic presbyopic correction with trifocal diffractive IOLs (PanOptix or PanOptix toric, Alcon Laboratories, Inc., Fort Worth, TX, USA)

Treatment:

Procedure: Phacoemulsification with bilateral trifocal diffractive IOLs

Control group

Description:

Patients of similar age without cataract that their crystalline lens has not been replaced.