Evaluation of compliance with instructions on smartphone viewing by using Eye Care-Clip

Evaluation of compliance with instructions on smartphone viewing by using Eye Care-Clip - Evaluation of compliance with instructions on smartphone viewing

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000055238

Enrollment

Registered

2024-10-01

Start date

2024-09-01

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

normal subjects

Interventions

to be aware of keeping smartphones at a viewing distance of at least 30cm

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy volunteers aged 12 to 29 years who wear glasses in their daily lives and use smartphones continuously for at least 30 minutes every day

Exclusion criteria

Exclusion criteria: 1. Those with corrected visual acuity of less than 1.0 in either eye 2. Those with a history of treatment for strabismus, amblyopia, or other eye diseases that result in reduced visual acuity 3. Those deemed inappropriate by the researchers

Design outcomes

Primary

Measure	Time frame
Percentage of people who were able to comply with the instruction to keep smartphone viewing distance at 30cm or more after receiving the instruction	—

Countries

Japan

Contacts

Public ContactHirohito Iimori

Ehime University Department of Ophthalmology

ycrgx240@gmail.com089-960-5361

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Sep 19, 2026