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Efficacy of pinhole contact lens with no refractive power

Efficacy of pinhole contact lens with no refractive power - Efficacy of pinhole contact lens with no refractive power

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000016480
Enrollment
9
Registered
2015-02-09
Start date
2015-02-09
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

myopia, myopic astigmatism and presbyopia

Interventions

Sponsors

Keio University School of Medicine
Lead Sponsor
Universal View Co., Ltd.
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) 50 years old and over 2) myopia and myopic astigmatism with corrected visual acuity of 1.0 and over 3) The astigmatism (the column frequency) is less than 1/2 of the spherical surface frequency 4) The person that the observation of both eyes is possible 5) The person possible to come for examination on the specified day 6) The person who I understand instructions and the explanation of the doctor, and can acquire an agreement

Exclusion criteria

Exclusion criteria: 1) Subjects who cannot wear a contact lens 2) Corneal endothelial cell density < 2000/ mm2 3)Corneal diameter < 10 mm 4) Subjects who have ocular diseases affecting visual function except for refractive error and presbyopia 5) A pregnant woman, a woman nursing or woman with the plan of the pregnancy 6) The patient (AIDS, autoimmune disease) with the immune disease or diabetic 7) The person who cannot obey the instructions of the ophthalmology specialist 8) Extremely nervous person 9) Person not able to bear plural inspection 10) In addition, the person who judged that an ophthalmology specialist was unsuitable for wearing this contact lens

Design outcomes

Primary

MeasureTime frame
Distance and near visual acuities with or without the pinhole contact lens.

Countries

Japan

Contacts

Public ContactKazuno Negishi

Keio University School of Medicine Department of Ophthalmology

fwic7788@mb.infoweb.ne.jp03-5363-3821

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026