Actual condition of refractive correction and its influences on the near task and the systemic health related indices in presbyopia age contact lens users

Actual condition of refractive correction and its influences on the near task and the systemic health related indices in presbyopia age contact lens users - Actual condition of refractive correction and its influences on the near task and the systemic health related indices in presbyopia age contact lens users

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000045430

Enrollment

150

Registered

2022-01-01

Start date

2022-09-01

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

Presbyopia

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: - monofocal soft contact lense users - Not using spectacles daily - Best corrected visual acuity => 0.8 in both eyes -

Exclusion criteria

Exclusion criteria: - Severe dry eye, severe allergic conjunctivitis - Post refractive surgery - corneal disease including keratoconus - Those who are determined inappropriate by the researchers

Design outcomes

Primary

Measure	Time frame
- refraction - objective accommodation amplitude - spectacles usage - distance and near visual acuity - questionnaires (Near activity vision questionnaires, subjective happiness scale, quality of sleep)	—

Countries

Japan

Contacts

Public ContactKazuno Negishi

Keio University School of Medicine Department of Ophthalmology

kazunonegishi@keio.jp03-5363-3821

Outcome results