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Impact of light conditions on the efficacy of pseudophakic presbyopic correction

Poster Details

First Author: P. Ntonti GREECE

Co Author(s):    E. Panagiotopoulou   G. Labiris                 

Abstract Details


Validation of VC-ADL (Visual Capacity of Activities of Daily Living) index.


Department of Ophthalmology, University Hospital of Alexandroupolis, Ophthalmology Clinic.


An experimental facility with dimensions 6.87 x 3.5 x 3 m and flat white surface walls was constructed. An advanced light diffusion system which secured maximal uniformity at different user-defined lighting settings was installed. A set of 10 tasks that simulated ADLs was developed. All tasks required intermediate (60cm) and near (40cm) vision and contributed equally to VC-ADL score. 60 participants populated 3 study groups according to the near vision acuity [J1 (20 patients), J3(20 patients) and J6(20 patients)] and performed the tasks.


Significant differences were detected among study groups for all tasks (all p<0.05) and for the total VC-ADL score (p=0.01).


VC-ADL score is a reliable index for the evaluation of functional capacity of near and intermediate vision.

Financial Disclosure:

gains financially from product or procedure presented

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