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Early symptomatic presbyopes--what correction modality works best?

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Low-addition multifocal soft lenses offer a successful visual correction option for early presbyopes, outperforming monovision in subjective assessments for tasks like driving and computer use.

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Area of Science:

  • Ophthalmology
  • Optometry
  • Vision Science

Background:

  • Early presbyopia affects visual function in individuals requiring distance correction.
  • Soft contact lenses are a common form of vision correction.
  • Multifocal contact lenses aim to address presbyopia by providing correction at multiple distances.

Purpose of the Study:

  • To compare the performance of low-addition silicone hydrogel multifocal soft lenses against other correction methods in early presbyopes.
  • To evaluate visual performance in habitual soft lens wearers experiencing early presbyopia symptoms.

Main Methods:

  • Prospective, double-masked, randomized, crossover trial involving four 1-week phases.
  • Comparison of low-addition multifocal lenses, monovision, habitual correction, and optimized distance correction.
  • Objective vision tests (LogMAR acuity, stereopsis) and subjective real-world performance ratings were collected.

Main Results:

  • No statistical difference in objective vision tests between modalities, except for low-contrast near acuity under low light where monovision performed better.
  • Subjective ratings favored multifocal correction over monovision for driving (day/night), glare/haloes, and road sign visibility.
  • Multifocal lenses were preferred for watching television and changing focus from distance to near.

Conclusions:

  • Low-addition multifocal silicone hydrogel lenses are a successful visual correction option for early presbyopes.
  • Subjective feedback, particularly for real-world tasks, supports the efficacy of multifocal lenses.
  • Consulting room acuity tests alone may not accurately predict multifocal lens success.