Keratoconus/keratectasia
Conditions
Interventions
Sponsors
Keio University School of Medicine
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Increase in Steepest K-value more than 1.0D 2. Increase in manifest cylinder more than 1.0D 3. Increase in manifest spherical equivalent more than 1.0D 4. Decrease of base curve of the back surface of best-fitted hard contact lens more than 1.0D One of the above conditions was shown within recent 24 months and the thinnest corneal thickness is 400 um or more.
Exclusion criteria
Exclusion criteria: The corneal thickness is less than 400 um Those who is implanted cardiac pacemaker, or other medical devices Non of the conditions below are observed; 1 Increase in Steepest K-value more than 1.0D 2 Increase in manifest cylinder more than 1.0D 3 Increase in manifest spherical equivalent more than 1.0D 4 Decrease of base curve of the back surface of best-fitted hard contact lens more than 1.0D Those who have ocular disorders, such as infections, scars, ocular herpes, nystagmus etc. those who have general diseases that can affect the corneal wound healing Narrow angle Those who is in pregnancy or breast-feeding Occupations that are not allowed to undergo refractive surgeries Age less than 14 year-old
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| visual acuity, manifest refraction, keratometric readings, corneal thickness | — |
Countries
Japan
Contacts
Public ContactNaoko Kato
Keio University School of Medicine Department of Ophthalmology
Outcome results
None listed