Visual quality of juvenile myopes wearing multifocal soft contact lenses

Abstract

Background: It is unclear whether multifocal soft contact lenses (MFSCLs) affect visual quality when they are used for myopia control in juvenile myopes. The aim of this study was, therefore, to investigate the effect of MFSCLs on visual quality among juvenile myopia subjects. Methods: In a prospective, intervention study, thirty-three juvenile myopes were enrolled. Visual perception was assessed by a quality of vision (QoV) questionnaire with spectacles at baseline and after 1 month of MFSCL wear. At the one-month visit, the high (96%) contrast distance visual acuity (distance HCVA) and low (10%) contrast distance visual acuity (distance LCVA) were measured with single vision spectacle lenses, single vision soft contact lenses (SVSCLs) and MFSCLs in a random order. Wavefront aberrations were measured with SVSCLs, with MFSCLs, and without any correction. Results: Neither distance HCVA (p > 0.05) nor distance LCVA (p > 0.05) revealed any significant difference between MFSCLs, SVSCLs and single vision spectacle lenses. The overall score (the sum of ten symptoms) of the QoV questionnaire did not show a statistically significant difference between spectacles at baseline and after 1 month of MFSCL wear (p = 0.357). The results showed that the frequency (p < 0.001), severity (p = 0.001) and bothersome degree (p = 0.016) of halos were significantly worse when wearing MFSCLs than when wearing single vision spectacle lenses. In contrast, the bothersome degree caused by focusing difficulty (p = 0.046) and the frequency of difficulty in judging distance or depth perception (p = 0.046) were better when wearing MFSCLs than when wearing single vision spectacle lenses. Compared with the naked eye, MFSCLs increased the total aberrations (p < 0.001), higher-order aberrations (p < 0.001), trefoil (p = 0.023), coma aberrations (p < 0.001) and spherical aberrations (SA) (p < 0.001). Compared with the SVSCLs, MFSCLs increased the total aberrations (p < 0.001), higher-order aberrations (p < 0.001), coma aberrations (p < 0.001) and SA (p < 0.001). The direction of SA was more positive (p < 0.001) with the MFSCLs and more negative (p = 0.001) with the SVSCLs compared with the naked eye. Conclusions: Wearing MFSCLs can provide satisfactory corrected visual acuity (both distance HCVA and distance LCVA). Although the lenses increased the aberrations, such as total aberrations and higher-order aberrations, there were few adverse effects on the distance HCVA, distance LCVA and visual perception after 1 month of MFSCL use.

Changes in accommodation and behavioural performance with a contact lens for myopia management: A comparison between a dual‐focus and a single‐vision soft contact lens

“…However, there is evidence that multifocal contact lenses wearers experience neuroadaptive adaptation through recruitment of visual attentional and procedural learning networks 41 . Indeed, previous studies reported an improvement in some visual parameters after periods of weeks or months 23,25 . Therefore, it is plausible that the variables measured here could improve after an adaptation period to this specific optical design.…”

“…For example, wearing multifocal soft contact lenses has been associated with an increased accommodative lag, which may lead to reduced image quality during near work 20–22 . Also, contrast sensitivity, light disturbance, higher order aberrations and visual comfort scores have been shown to be negatively affected by multifocal soft contact lenses used for slowing myopia progression, although no changes in visual acuity and stereopsis have been observed 16,17,23–26 …”

Short-Term Effect of Wearing of Extended Depth-of-Focus Contact Lenses in Myopic Children: A Pilot Study

“…A trend to an increase in the perception of photic phenomena with the CL wear was observed but in most cases occasionally and inducing mild bothersomeness. Kang et al [42] and Huang et al [43] used a validated questionnaire of quality of vision to analyze the impact of off-label multifocal CL fitting for myopia control, reporting the presence of a certain level of blurred vision, visual fluctuation, focus difficulty and photic symptoms. Specifically, Huang et al [43] reported a decrease in these photic symptoms after one month of CL use, except for halos.…”

“…Kang et al [42] and Huang et al [43] used a validated questionnaire of quality of vision to analyze the impact of off-label multifocal CL fitting for myopia control, reporting the presence of a certain level of blurred vision, visual fluctuation, focus difficulty and photic symptoms. Specifically, Huang et al [43] reported a decrease in these photic symptoms after one month of CL use, except for halos. Our study showed a low incidence of glare and halos before and after CL wear, with no patient reporting the perception of moderate or severe glare or halos.…”

The Spatial Distribution of Relative Corneal Refractive Power Shift and Axial Growth in Myopic Children: Orthokeratology Versus Multifocal Contact Lens

“…For the MFCL group, a daily disposable soft contact lens (BioThin, Bio Optic Inc., Taiwan, China) made of ocufilcon D [DK: 19 × 10 –11 (cm 2 /s) (mL O 2 /mL ∗ mmHg)] with a diameter of 14.2 mm and a base curve of 8.6 mm was used. The lenses were designed to have the spherical distance power at the central treatment zone of 0–3 mm diameter and a myopic defocus zone of 3–6 mm diameter ( Huang et al, 2020 ). Subjects were asked to wear the MFCL for at least 5 days/week, 8 h/day.…”