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Clinical Trials/JPRN-jRCTs032210079
JPRN-jRCTs032210079
Completed
未知

Evaluate the effect of multifocal contact lenses on reducing asthenopia in terms of objective and subjective assessment by using near response

Hara Naoto0 sites20 target enrollmentMay 11, 2021
ConditionsEye strain

Overview

Phase
未知
Intervention
Not specified
Conditions
Eye strain
Sponsor
Hara Naoto
Enrollment
20
Status
Completed
Last Updated
2 years ago

Overview

Brief Summary

The use of bifocal CL did not significantly affect fatigue and the frequency and intensity of ocular symptoms. It was also thought to be due to the fact that many patients had low severity of eye symptoms. The oblique inward deviation suggests that the participation and depth of focus of the lens are used by the subjects to relax their accommodation efforts. However, further research is needed to assess long-term adaptation to lenses.

Registry
who.int
Start Date
May 11, 2021
End Date
August 31, 2022
Last Updated
2 years ago
Study Type
Interventional
Sex
All

Investigators

Sponsor
Hara Naoto

Eligibility Criteria

Inclusion Criteria

  • 1\)Written informed consent
  • 2\)Men and women aged between 35 and 50 (early presbyopia age group) who can record objective regulatory responses
  • 3\)Those who wear contact lenses on a daily basis
  • 4\)Lens power within the supply range
  • 5\)Corrected distance vision in both eyes of 1\.0 and near\-view stereopsis \<\=120sec
  • 6\)Those who do desk work / VDT all day during working hours
  • \*1Excludes watching TV, smartphones, etc. at home.

Exclusion Criteria

  • 1\)Already wear Dailies Total1 bifocal contact lenses on a daily basis
  • 2\)Prone to develop severe dry eye, keratoconjunctivitis, etc.
  • 3\)Suffering from anterior ocular infections, inflammation, abnormalities. Diseases contraindicated\*1 for wearing contact lenses.
  • 4\)History of depression (because of transition from fatigue/stress to depression)
  • 5\)Judged unsuitable to the study from staff
  • \*1Acute and subacute inflammation of the anterior segment of the eye, eye infections, uveitis,
  • decreased corneal perception, dry eye and lacrimal disorders that are problematic for lens wear, eyelid abnormalities, allergic diseases that affect lens wear

Outcomes

Primary Outcomes

Not specified

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