myopia, myopic astigmatism and presbyopia
Conditions
Interventions
Wearing a pinhole contact lens
Sponsors
Keio University School of Medicine Department of Ophthalmology
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) 45 years old and over 2) Patinets with myopia and myopic astigmatism whose spherical equivalent of subjective refraction is between -1 and -9 dioptor as well as whose corrected visual acuity of 1.0 and over 3) The astigmatism less than half of the spherical power 4) The patients whose both eyes can be observed 5) The patients who can come for examination on specified days 6) The patients who can wear pinhole contact lens daily for 3-4 hours 7) Soft CLs users 8) The patients who understand instructions and the explanation of the doctor, and can give a conscent
Exclusion criteria
Exclusion criteria: 1) multifocal CLs users 2)toric CLs users 3) usershard CLs users 4) Subjects who cannot wear a contact lens 5) Corneal endothelial cell density < 2000/ mm2 6) Corneal diameter < 10 mm 7) Subjects who have ocular diseases affecting visual function except for refractive error and presbyopia 8) A pregnant woman, a woman nursing or woman with the plan of the pregnancy 9) The patient (AIDS, autoimmune disease) with the immune disease or diabetic 10) The person who cannot follow the instructions of the ophthalmologist 11) Extremely nervous persons 12) Person who are not able to undergo examinations 13) In addition, the person who are judged unsuitable to use pinhole contact lens by ophthalmologists
Design outcomes
Primary
| Measure | Time 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
Outcome results
None listed