Comparison of visual performance of dual focus contact lenses for myopia control $vs.$ single vision contact lenses.
Villani V., Pietroni D., Offi F., Petrini D.
Myopia is a globally widespread ametropia; this has led to the development of approaches for slowing myopic progression, including the use of specific dual focus (DF) contact lenses (CL) for myopia control. In this study the visual performance of a dual focus lac (MiSightTM) and a single vision (SV) CL (Bausch Lomb Ultra) were compared. For this, 25 subjects ($15 \pm 3$), myopic ($Sp$ from $-0.50 D$ to $-6.00 D$) with max astigmatism of $1.00 CD$ were recruited. A preliminary visit to verify the inclusion criteria of the study was performed. During this visit, monocular and binocular visual acuity (VA) with spectacles were recorded and corneal topoaberrometry (Keratron Onda) was performed. Subsequently, for each subject, monocular and binocular Low Contrast Visual Acuity (LCVA) and High Contrast Visual Acuity (HCVA), were assessed, with the DFCL and with the SVCL; visual quality was objectively evaluated by performing Total Ocular Aberrometry. The results obtained will be presented to evaluate the effect of dual focus CL on vision.