Clinical trial for smartphone-based functional near vision acuity test

Clinical trial for smartphone-based functional near vision acuity test - Smartphone-based functional near vision acuity test

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000041819

Enrollment

300

Registered

2021-01-01

Start date

2020-12-01

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

Healthy individuals

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1)=> 20 years old 2)individuals who can use a smartphone 3)those with no intraocular/refractive surgical history 4) Best corrected visual acuity => 0.8 bilaterally 5) those obtained informed consent

Exclusion criteria

Exclusion criteria: 1) Participants who had severe visual impairment 2) Those with communication difficulty 3) Those who had difficulty in participation 4) Those who had severe symptoms of dry eye disease

Design outcomes

Primary

Measure	Time frame
Correlation between subjective symptoms and objective signs of presbyopia	—

Secondary

Measure	Time frame
- Validation for smartphone-based functional near vision acuity test - Relationship between severity of presbyopia and quality of life	—

Countries

Japan

Contacts

Public ContactKazuno Negishi

Keio University School of Medicine Department of Ophthalmology

kazunonegishi@keio.jp03-5363-3821

Outcome results