Impact Of Pupil Size On Near Vision Range Of Monofocal, Monofocal Plus Iols:A Randomized Study
Published 2026 - 44th Congress of the ESCRS
Reference: POCAT451 | Type: Free paper | DOI: 10.82333/q29m-1z70
Authors: Dr Shail Vasavada* 1 , Dr Lajja Shastri 1 , Dr Samaresh Srivastava 1 , Dr Vaishali Vasavada 1 , Dr Abhay Vasavada 2
1Raghudeep Eye Hospital,Ahmedabad,India, 2Raghudeep Eye Hospital,Iladevi Cataract & IOL Research Centre,Ahmedabad,India
Purpose
To determine impact of pupil size on need of reading add and reading vision acuity with 3 types of monofocal /monofocal plus IOLs.
Setting
Iladevi Cataract & IOL Reserach Centre
Methods
120 eyes randomized into 3 groups with 40 eyes each,Group 1 Clareon IOL,Group 2 Tecnis IOL and Group 3 Eyehance monofocal plus IOL.3 months post surgery,unaided and best corrected distance visual acuity measured in LogMAR units and Defocus curve plotted at 2 contrast levels, 100% and 25%.Distance Corrected Intermediate Visual Acuity(DCIVA,66cm)and Distance Corrected Near Visual Acuity(DCNVA,40cm)were recorded.Following this,the pupil was fully dilated and two contact lenses with fixed aperture of 3 and 4.5mm respectively were fitted one by one.With fixed pupil sizes,DCIVA,DCNVA and minimum add power needed to get 20/32 & 20/40 letter size was compared.
Results
This ongoing study results will be updated at the time of presentation.
Conclusions
This study will demonstrate the role of pupil size in providing good unaided intermediate and near vision with different monofocal/monofocal plus IOL.