How visual resistance affects patients' visual satisfaction

• Visual endurance - a measure of the expectation of perfect vision across all tasks and over time.
• Discriminating vision - the 4 critical capabilities of the visual system include resolution, sensitivity to chromatic contrast, the motion detection threshold, and stereoscopic function.
• Spatial vision: the perception of spatially defined features in the surrounding environment.

Why visual endurance may be of particular importance for patients¹

• Despite having excellent visual acuity, many soft contact lens wearers report fluctuations and decreased overall satisfaction during the day. 

• In a survey sent to their smartphones every 2 hours, 62% of users of reusable soft contact lenses and daily disposables experienced a decline in:
  • The quality of vision over the course of the day
  • Overall lens satisfaction
  • Comfort

Managing visual endurance¹

Biological or environmental factors that trigger a change in vision quality are typically perceived as a nuisance or inconvenience.

If we truly want to satisfy our patients, we need to explore new product innovations and broaden our metrics and evaluations to include the three dimensions of vision satisfaction:

• Visual endurance
• Discriminatory vision
• Spatial vision