July 2019
Volume 60, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2019
The effects of aspheric and concentric multifocal soft contact lenses on visual quality, vergence and accommodation function in young adult myopes.
Author Affiliations & Notes
  • Katrina L Schmid
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Kate Gifford
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Patrick Chan
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Benjamin Christie
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Sarah Crouther
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Olivia Nahuysen
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Kristina Sechenova
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Laura Sevil
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Marlin Youssef
    Queensland University of Technology, Brisbane, Queensland, Australia
  • David A. Atchison
    Queensland University of Technology, Brisbane, Queensland, Australia
  • Footnotes
    Commercial Relationships   Katrina Schmid, None; Kate Gifford, CooperVision (R), Visioneering Technologies (R); Patrick Chan, None; Benjamin Christie, None; Sarah Crouther, None; Olivia Nahuysen, None; Kristina Sechenova, None; Laura Sevil, None; Marlin Youssef, None; David Atchison, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 3893. doi:https://doi.org/
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      Katrina L Schmid, Kate Gifford, Patrick Chan, Benjamin Christie, Sarah Crouther, Olivia Nahuysen, Kristina Sechenova, Laura Sevil, Marlin Youssef, David A. Atchison; The effects of aspheric and concentric multifocal soft contact lenses on visual quality, vergence and accommodation function in young adult myopes.. Invest. Ophthalmol. Vis. Sci. 2019;60(9):3893. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : Multifocal soft contact lenses (MFCLs) are prescribed to inhibit myopia progression; these include aspheric and concentric power designs. We investigated the effect of different MFCL designs on visual quality, vergence and accommodation in young-adult myopes.

Methods : Participants were 26 adults aged 19 to 25 years (21 females, 5 males) with myopia (SER: range −0.50 to −5.75D, average −2.6±1.7D), normal binocular vision and no history of past myopia control. Pupil sizes were 4.4±0.9 mm during distance viewing and 3.7±0.8 mm at near. In a random sequence, at one visit, each wore 4 different contact lenses: Proclear single vision distance, MiSight concentric dual-focus (+2.00D), distance centered aspheric (CV aspheric, +2.50D) (all CooperVision), NaturalVue aspheric (Visioneering Technologies, +8 to +11D at pupil margin, up to +20D at optic zone edge). Comprehensive visual quality and binocular function assessments were made with each.

Results : The four lenses differed in distance (ANOVA, p=0.001) and near visual acuity (p=0.011), and in contrast sensitivity (Pelli-Robson, p=0.001). Compared to the single vision lens, the CV aspheric had the greatest visual impact: 0.19±0.14 logMAR distance acuity reduction, 0.22±0.15 log contrast sensitivity reduction. Near acuity was affected less than distance acuity and was worst for the NaturalVue (0.05±0.07 logMAR near acuity reduction). Exophoric shifts were greater with aspheric lenses (Howell card near phoria, 33cm, paired t-test, 1.8±2.4Δ, CV aspheric, p<0.001, NaturalVue, p=0.001; 1.7±1.7Δ), and were smaller with the concentric MiSight (0.5±1.3Δ, p=0.046). The aspheric lenses reduced measured accommodation responses (Grand Seiko Autorefractor, 33cm, p=0.001): the CV aspheric decreased the response by 0.6±0.5D and the NaturalVue by 0.5±0.6D. However, the MiSight did not alter the measured accommodation (p=0.275). Negative relative accommodation reduced with the aspheric lenses (ANOVA, p=0.001): by 0.9±0.5D with the CV aspheric and 0.5±0.7D with the NaturalVue.

Conclusions : MFCLs alter visual performance, vergence and measured accommodation responses; the aspheric lenses had greater effect than the concentric lens.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.

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