Investigation of the factors determining contact lens discomfort

Investigation of the factors determining contact lens discomfort - Investigation of the factors determining contact lens discomfort

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000041987

Enrollment

100

Registered

2020-11-01

Start date

2021-03-05

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

Contact lens discomfort

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Soft contact lens user with contact lens discomfort

Exclusion criteria

Exclusion criteria: 1: The patients with ocular surface inflammatory disease, blepharitis (including meibomitis), and meibomian gland dysfunction 2: The patient who experienced ocular surgery (including eyelid surgery) within 3 months prior to the day of entry 3: Patients who are judged by an investigator to be inappropriate for this study for any other reason

Design outcomes

Primary

Measure	Time frame
Contact lens discomfort associated symptoms (J-CLDEQ-8 & visual analog scale)	—

Secondary

Measure	Time frame
Before wearing and at the point of 15 min after wearing soft contact lens 1: The radius of tear meniscus 2: The pattern of tear film breakup 3: Non-invasive breakup time of tear film 4: The index which assess the expansion of tear film breakup 5: Distortion value of Mayer's rings of corneal topography	—

Countries

Japan

Contacts

Public ContactNorihiko Yokoi

Kyoto Prefectural University of Medicine Department of Ophthalmology

nyokoi@koto.kpu-m.ac.jp075-251-5578

Outcome results