Correlation Between Pseudoaccommodation Achieved Using The Reading Speed Measured With Salzburg Reading Desk And Reading Chart In Pseudophakic Patients

To assess the correlation between the reading font size on Salzburg reading Desk (SRD) and reading chart in patients who achieved 0.3LogMAR on reading chart and 6/12 for distance vision

Susex Eye Hospital, University Hospitals Sussex NHS Foundation Trust, Brighton, United Kingdom.

This is a part of Monofocal Extended Range of Vision Study (MEROV) funded by ESCRS and was a single-eye study ( ClinicalTrials.gov : NCT04011696). At 3 to 9 months, patients achieving pseudoaccommodation with distance visual acuity of 6/12 or better and near visual acuity of 0.3LogMAR or better at 40 cm on Prevision Vision reading chart were indentified. Near vision font size was also assessed in all patients using SRD at 40 cms. Pearson's corelation was calculated between the reading visual acuity on SRD versus Precision Vision Chart. 

The mean near vison font size on Precision vision reading chart was 0.23+/-0.11LogMAR Vs. 0.37+/-0.16LogMAR on SRD (p<0.01). Factors responsible for pseudoaccomdation using Precision Vision reading charts were diffrent from those achived with SRD. 

Eyes achieving pseudoccommdoation after monofocal intraocular lens implant with back ligh screens (such as SRD) did not achive pseudoaccommodation when using reading chart (without back lit screans). Factors responsible for pseudoaccommodaiton are significantly different when near vision is assessed using back lit screen (SRD) versus paper reading charts.