July 2018
Volume 59, Issue 9
Open Access
ARVO Annual Meeting Abstract  |   July 2018
The relationship between visual acuity, subjective vision and willingness to purchase simultaneous-image contact lenses
Author Affiliations & Notes
  • Monica Jong
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Daniel Tilia
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Jennifer Sha
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Jennie Diec
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Varghese Thomas
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Ravi Bakaraju
    Translational Research, Brien Holden Vision, Sydney, New South Wales, Australia
  • Footnotes
    Commercial Relationships   Monica Jong, None; Daniel Tilia, Brien Holden Vision Institute (E); Jennifer Sha, Brien Holden Vision Institute (E); Jennie Diec, Brien Holden Vision Institute (E); Varghese Thomas, Brien Holden Vision Institute (E); Ravi Bakaraju, Brien Holden Vision Institute (E)
  • Footnotes
    Support  Brien Holden Vision Institute
Investigative Ophthalmology & Visual Science July 2018, Vol.59, 1791. doi:
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    • Get Citation

      Monica Jong, Daniel Tilia, Jennifer Sha, Jennie Diec, Varghese Thomas, Ravi Bakaraju; The relationship between visual acuity, subjective vision and willingness to purchase simultaneous-image contact lenses. Invest. Ophthalmol. Vis. Sci. 2018;59(9):1791.

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

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Abstract

Purpose : To investigate the relationship between visual acuities and subjective visual measures and willingness to purchase (WTP) simultaneous-image contact lenses after 1 week of wear in presbyopes.

Methods : This was a retrospective analysis of two masked, cross-over, clinical trials with 141 presbyopes wearing 4 commercially-available simultaneous-image contact lens designs (ACUVUE OASYS for Presbyopia, 1-Day Acuvue Moist Multifocal, AIR OPTIX Multifocal, and SEED 1 Day Multistage) and extended depth-of-focus prototype designs for 1 week.
Outcome measures included high and low contrast visual acuity at 6m, 70cm, 50cm and 40cm at high and low illumination, subjective questionnaire (numeric rating scale 1-10, steps of 1) for overall vision clarity, ghosting, vision when driving, overall vision satisfaction, haloes at night, ease of changing focus, comfort. WTP was collected as a yes/no response. Analysis comprised Pearson correlation and area under the ROC curve (AUC).

Results : The majority of subjective ratings showed significant (p<0.05) but weak correlation (0<r<0.3) with all acuity measures. Overall vision satisfaction ratings and all near vision ratings were moderately (0.3≤r<0.5) correlated with visual acuities at 70cm, 50cm and 40cm. As visual acuity improved, vision ratings also improved significantly (p<0.05). Subjective measures with the highest discrimination for WTP were overall vision satisfaction (AUC 0.925) and vision stability during day-time (AUC±0.765). All other subjective measures had AUC between 0.64-0.75. The relationship of subjective ratings with WTP was not linear. Ratings between 5 and 9 for overall vision satisfaction showed a linear increase in WTP, where a 1-unit increase in vision satisfaction corresponded to a 20% increase in WTP. Ratings below 5 had 0% WTP. Other subjective measures showed a similar relationship above ratings of 5, albeit only 10-15% increase in WTP with a 1-unit increase in vision satisfaction.

Conclusions : Visual acuities generally show weak correlation with subjective performance of simultaneous image contact lenses. Subjective vision correlates better with intermediate and near visual acuities compared to distance visual acuities. Subjective vision ratings can predict WTP, especially overall vision and vision stability.

This is an abstract that was submitted for the 2018 ARVO Annual Meeting, held in Honolulu, Hawaii, April 29 - May 3, 2018.

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