An observational study in Presbyopia, sponsored by Democritus University of Thrace. Status unknown at 1 site in Greece. Open to participants aged 50 Years to 65 Years. Per ClinicalTrials.gov, last updated 2017-01-16.
Sponsored by Democritus University of Thrace · Observational
Patients who underwent bilateral bifocal or trifocal lenses implantation for presbyopia correction with monofocal intraocular lenses implantation are supposed to have sufficient uncorrected vision capacity for activities of daily living (ADLs) that require: a) distant vision (DV), (ie. driving), b) intermediate vision (IV), (ie. computer word processing), c) near vision (NV), (ie. book reading). Primary objective of the study is the comparison in a series of ADLs of two cohorts of patients (group 1: subjects with bilateral bifocal lenses implantation, group 2: subjects with bilateral trifocal lenses implantation)
324 studies on the registry are indexed under Presbyopia; 33 are open to participants now.
This study's planned enrollment of 80 is close to the median of 80 across 51 observational studies indexed under Presbyopia.
Browse Presbyopia studies →Democritus University of Thrace is the lead sponsor of 70 studies on the registry; 8 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Grade 1 Cataract Patients
Exclusion Criteria:
(Bifocal group). Subjects that underwent bifocal intraocular lenses implantation. (ie. Phaco with Restor intervention).
Procedure: Phaco with Restor
(Trifocal group). Subjects that underwent trifocal intraocular lenses implantation. (ie. Phaco with Panoptix intervention).
Procedure: Phaco with Panoptix
Phacoemulsification with bilateral bifocal intraocular lenses implantation
Phacoemulsification with bilateral trifocal intraocular lenses implantation
Visual Capacity (VC)
Assessment of Visual capacity (VC)
Time frame: 1 year following surgery
Distant Visual Capacity (DVC)
Visual capacity for activities that require distant vision (DVC). DVC score will be measured by the performance score in the following ADLs: a) walking specific pathway, 2) walking up stairs, 3) walking down stairs, 4) day-time driving simulation, 5) night-time driving simulation
Time frame: 1 year following surgery
Intermediate Visual Capacity (IVC)
Visual Capacity for activities that require intermediate vision (IVC). VC score will be measured by the performance score in the following ADLs: a) reading ability of movie subtitles, b) reading ability of a predefined computer screen text, c) reading a supermarket badge
Time frame: 1 year following surgery
Near Visual Capacity (NVC)
Visual Capacity for activities that require near vision (NVC). NVC score will be measured by the performance score in the following ADLs: a) cellular phone directory entry search, b) reading of message in a cellular phone, c) reading a medical prescription, d) reading a public phonebook
Time frame: 1 year follwoing surgery
Plan to share: No
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This study is status unknown, as verified in Jan 2017. You cannot join it, but the record below documents what was studied.
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Democritus University of Thrace