Clinical Effectiveness of A Surgical Method In Keratoconus Patients

Clinical and Morphological Corneal Changes After Intrastromal Corneal Ring Segment (Keraring) Implantation In Keratoconus Patients

Status

Active, not recruiting

Phases

Phase 1

Study type

Interventional

Source

IRCT

Registry ID

IRCT201106026695N1

Enrollment

Registered

2013-05-19

Start date

2013-03-08

Completion date

Unknown

Last updated

2018-02-22

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

Conditions

Keratoconus. Keratoconus

Interventions

All the participants will undergo intrastromal corneal ring segment

Keraring (Mediphacos, Belo Horizonte) implantation which is made up of polymethylen acrylate. A radial incision using a diamond knife between two marked arcs will be performed. Mentioned rings then, w

Treatment - Surgery

Eligibility

Sex/Gender

All

Age

18 Years to 55 Years

Inclusion criteria

Inclusion criteria: Inclusion criteria: (intolerance to hard contact lenses; to have corneal thickness equal to or more than 400 micrometers in the area of Keraring placing; to have keratometry less than 70 diopters) Exclusion criteria: (to have any local or diffused autoimmune disease)

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

Measure	Time frame
Visual acuity. Timepoint: Before the intervention, 5, 20, 45 days and 3 months after the intervention. Method of measurement: Using Snellen chart.;Refractive power of cornea. Timepoint: Before the intervention, 5, 20, 45 days and 3 months after the intervention. Method of measurement: Using keratometer.;Topography. Timepoint: Before the intervention, 3 months after the intervention. Method of measurement: Using Pentacam device.	—

Measure

Time frame

Visual acuity. Timepoint: Before the intervention, 5, 20, 45 days and 3 months after the intervention. Method of measurement: Using Snellen chart.;Refractive power of cornea. Timepoint: Before the intervention, 5, 20, 45 days and 3 months after the intervention. Method of measurement: Using keratometer.;Topography. Timepoint: Before the intervention, 3 months after the intervention. Method of measurement: Using Pentacam device.

—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAmin Najafi

Tabriz University of Medical Sciences

Dr_Najafi84@yahoo.com+98 41 1655 1332

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026