Reading Vision In Pseudophakic Patients After Emmetropic Monofocal Intraocular Lens Implantation
Published 2023 - 41st Congress of the ESCRS
Reference: PP10.02 | DOI: 10.82333/bz6n-qb10
Authors: Mayank Nanavaty* 1 , Ritika Mukhija 1 , Zahra Ashena 1 , Catey Bunce 2 , David Spalton 3
1Sussex Eye Hospital,University Hospitals Sussex NHS Foundation Trust,Brigthon,United Kingdom, 2The Royal Marsden NHS Foundation Trust,London,United Kingdom, 3Kings College,London,United Kingdom
The aim of this study was to assess the reading speed and font size in pseudophakic eyes following implantation of an aspherically neutral monofocal IOL aimed at an emmetropic refractive outcome.
University Hospitals Sussex NHS Foundation Trust, Brighton. UK
This was a prospective, single eye study on patients undergoing routine cataract surgery with an aspherically neutral monofocal IOL and expected to achieve 20/40 or better unaided vision. Eyes with surgical complications or co-existing ocular pathology were excluded. At 3-9 months post-surgery, manifest refraction, uncorrected & best-corrected distance (UCDVA & BCDVA) & uncorrected near (UCNVA) LogMAR acuity, spherical equivalent (SEQ) was assessed. Unaided reading speed and smallest print size were assessed using the Salzburg Reading Desk.
412 patients were recruited between July 2019 and October 2021 and data on 301 patients were available (99 dropped out due to the Covid pandemic, 10 lost for follow-ups and 2 died). Median UCDVA, BCDVA, UCNVA and SEQ were 0.14 LogMAR (IQR= 0.02 to 0.24 LogMAR), 0 LogMAR (IQR= -0.08 to 0.02) and 0 D (IQR= -0.13D to -0.07D) respectively. The unaided reading speed was 100-150wpm in 42.8% (129 patients) followed by 151-200wpm in 26.1% (78 patients). 30.9% (93 patients) read 0.4 to 0.5 LogMAR followed by 10.8% (33 patients) for 0.3 to 0.4LogMAR and 7.4% (22 patients) for 0.2 to 0.3LogMAR.
The majority of the patients with monofocal IOLs can read unaided a font size of 0.4 to 0.5 LogMAR with the unaided reading speed of 100-150wpm.