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.
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)
Study Type
OBSERVATIONAL
Enrollment
100
Uneventful bilateral pseudophakic presbyopic correction with trifocal diffractive IOLs
University Hospital of Alexandroupolis
Alexandroupoli, Evros, Greece
Minimum light intensity
Minimum light intensity in which participants reach their maximum critical visual acuity
Time frame: 6 months postoperatively
Critical Visual Acuity (CVA)
The print size of the optotype line fulfilling this criterion: all of the following lines are read at a time that is 1.96 times the standard deviation over the average reading time of the larger preceding lines. In clinical practice, the CVA is the minimum VA that can be read with the maximum possible speed.
Time frame: 6 months postoperatively
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