Comparison of Simulated Keratometry and Total Refractive Power for Keratoconus According to the Stage of Amsler-Krumeich Classification.

Comparison of Simulated Keratometry and Total Refractive Power for Keratoconus According to the Stage of Amsler-Krumeich Classification. - Comparison of Simulated Keratometry and Total Refractive Power for Keratoconus

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000030005

Enrollment

100

Registered

2017-11-16

Start date

2016-01-01

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

Keratoconus

Interventions

Corneal tomography Corneal tomography

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Keratoconus was diagnosed by one experienced clinician (KK) with evident findings characteristic of keratoconus (e.g., corneal topography with asymmetric bow-tie pattern with or without skewed axes), and at least one keratoconus sign (e.g., stromal thinning, conical protrusion of the cornea at the apex, Fleischer ring, Vogt striae, or anterior stromal scar) on slit-lamp examination.

Exclusion criteria

Exclusion criteria: Eyes with pellucid marginal degeneration, other corneal diseases, and previous ocular trauma or surgery, were excluded from the study.

Design outcomes

Primary

Measure	Time frame
the simulated keratometry (Sim K) and the total corneal refractive power (TCRP)	—

Countries

Japan

Contacts

Public ContactKazutaka Kamiya

Kitasato University Dept of Opthalmology

kamiyak-tky@umin.ac.jp0427788464

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026