Predicting change of tear layer thickness under scleral contact lens in keratoconus patients and compare with normal volunteers Predicting change, tear layer thickness, scleral contact lens, keratoconus
Conditions
Interventions
Sponsors
Faculty of Medicine Siriraj Hospital, Mahidol University
Eligibility
Sex/Gender
All
Age
12 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Keratoconus patients, who have been diagnosed with keratoconus and use scleral contact lenses at least 4-6 hours a day. 2. Control groups, healthy volunteers without any corneal disease (over 18 years old). 3. Age > 12 years old. * Because there are few keratoconus patients treated with scleral contact lens and some are pediatric patients under the age of 18.
Exclusion criteria
Exclusion criteria: 1. have an infection of the eyelids, conjunctiva, cornea or eyeball on the day of study. 2. have used any eye drops during the eye exam. 3. who are contraindicated in using contact lens.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change rate of tear layer thickness at 0 min, 30 min, 1 hour, 2 hour, 3 hour, 4 hour, 6 hour Change of tear layer thickness under scleral contact lens at different time | — |
Secondary
| Measure | Time frame |
|---|---|
| Compare change rate of tear layer thickness at 0 min, 30 min, 1 hour, 2 hour, 3 hour, 4 hour, 6 hour Change of tear layer thickness under scleral contact lens in keratoconus patients and compare with normal volunteers at different time | — |
Countries
Thailand
Contacts
Public ContactAtiporn Thuangtong
Faculty of Medicine Siriraj Hospital, Mahidol University
Outcome results
None listed