ESCRS - FPM09.02 - Extended-Depth Of Focus Intraocular Lenses Quality Of Vision Performance: A Comparative Study

Extended-Depth Of Focus Intraocular Lenses Quality Of Vision Performance: A Comparative Study

Published 2022 - 40th Congress of the ESCRS

Reference: FPM09.02 | Type: Free paper | DOI: 10.82333/1bjd-zq92

Authors: Rita Vieira* 1 , João Heitor 1 , Diana José 1 , Ana Carolina Abreu 1 , Sílvia Monteiro 1 , Maria do Céu Brochado 1

1Centro Hospitalar Universitário do Porto,Oporto,Portugal

Purpose

To compare vision quality after bilateral refractive lens extraction (RLE) with implantation of two newly non-diffractive extended depth-of-focus (EDOF) intraocular lenses (IOLs): Acrysoft IQ Vivity®(Alcon) and Precizon Presbyopic® NVA570 (Ophtec). 

Setting

Refractive Surgery Unit of Ophthalmology Department of Centro Hospitalar Universitário do Porto, Oporto, Portugal

Methods

Comparative case series study including 28 eyes submitted to RLE with Vivity® (group 1, n=14) or Precizon® (group 2, n=14) implantation. A complete ophthalmological examination was carried out 3 months after surgery. High-contrast uncorrected (UDVA) and corrected visual acuities (BCVA) were measured by Snellen chart. Metrovision-MonPack3® was used to test contrast sensitivity under static conditions, in photopic and low-mesopic settings, considering different spatial frequencies (0.5, 3, 7.5 and 15 cycles per degree-cpd). The same software was used for glare evaluation under low (1 and 5 cd/m2) and high (100 cd/m2) luminance. Ocular scatter index (OSI), Modular Transfer function (MTF) and Strehl-ratio were measured using the HDAnalyzer®. 

Results

LogMAR UDVA and logMAR BCVA were similar between groups (UDVA: 0.08±0.09 and 0.05±0.07, p=0.377), (BCVA: -0.03±0.10 and 0.02±0.07, p=0.155). Contrast sensivity was lower in group 1 regarding low spatial frequency (0.5 cpd) in photopic conditions (13.9±2.9 dB versus 16.2±1.7 dB, p=0.017) and high spatial frequency (15 cpd) in mesopic conditions (1.9±2.2 versus 6.0±5.7, p=0.019). For medium spatial frequency (3 cpd) contrast sensivity was identic, in photopic (18.6±2.1 dB and 17.8±2.3 dB, p=0.353) and mesopic conditions (14.4±4.4 dB and 15.5±5.3 dB, p=0.593). There were no differences in Glare, evidencing values in low luminance (1 cd/m2) of 84.1±15.4% and 73.8±11%, (p=0.054). Group 1 showed lower OSI, higher MTF and Strehl-ratio (p<0.05). 

Conclusions

Both IOLs showed an excellent UDVA, contrast sensivity for medium spatial frequencies similar to normal age-matched values and acceptable glare values in the lowest luminance conditions. Nevertheless, some differences were observed: the Vivity® evidenced better performance through the HDAnalyzer® and Precizon® better contrast sensivity, especially in high spatial frequencies in mesopic conditions and in low spatial frequencies in photopic conditions.