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. 2023 Sep 19;2023(9):CD014791. doi: 10.1002/14651858.CD014791.pub2

NCT04032457.

Methods RCT, parallel‐group, cross‐over design
Participants Inclusion criteria: 18 to 42 years of age; currently wearing spherical daily disposable contact lenses at least 5 days/week; vision correctable to 20/30 with spherical lenses in powers from +3.00 to +1.00 DS and from −1.00 to −7.00 DS; VA corrected to at least 20/30 with spherical contact lens
Exclusion criteria: ocular or systemic disease that contraindicates SCL wear; sensitivity to diagnostic pharmaceuticals; pregnant, lactating, or planning pregnancy; aphakic; undergone refractive error surgery
Interventions Phase 1
Olifilcon B with tangible coatings
  • material: silicone hydrogel

  • replacement frequency: daily


Etafilcon A
  • material: hydrogel

  • replacement frequency: daily


Senofilcon A
  • material: silicone hydrogel

  • replacement frequency: daily


Delefilcon A
  • material: silicone hydrogel

  • replacement frequency: daily


Phase 2
Etafilcon A with tangible coatings
  • material: hydrogel

  • replacement frequency: daily


Etafilcon A
  • material: hydrogel

  • replacement frequency: daily


Nesofilcon A
  • material: hydrogel

  • replacement frequency: daily


Nelfilcon A
  • material: hydrogel

  • replacement frequency: daily


Notes: 2 phases, only 6 parallel groups in phase A compared silicone hydrogel SCL to daily SCL in 12 cross‐over interventions (12 participants in each intervention period); the other 6 groups in phase B compared a new‐to‐market hydrogel SCL to daily SCL
Outcomes Primary outcome:
  • subjective lens preference Likert question (forced choice; test or benchmark lens or no preference)


Secondary outcomes:
  • CLDEQ‐8 score

  • adverse outcomes

Notes Sponsorship source: Vision Service Plan
Authors' names: Robin L Chalmers, OD (investigator), Alex Dreu, Plexus Optix (results)
Institution: Vision Service Plan, Foresight Regulatory Strategies Inc.
Comments: quality control review of results not completed; whether the analysis accounted for cross‐over design was unclear