Q Value nomogram Versus Kera nomogram combined with ACXL

Keraring Implantation Using Keraring Nomogram Versus the Q Value Modified Nomogram of a Single Keraring Segment Implantation Combined with Accelerated Cross-Linking for Treatment of Keratoconus: a Comparative Study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR201811613938575

Enrollment

150

Registered

2018-11-27

Start date

2018-11-28

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Eye Diseases

Interventions

KC Group

Standard Nomogram

Q value based Nomogram

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Age less than 40 years old Grade I and II Keratoconus No previous interventions

Exclusion criteria

Exclusion criteria: Corneal opacity Previous Hydrops Age more than 40 years

Design outcomes

Primary

Measure	Time frame
Stability and prevention of KC progression	—

Secondary

Measure	Time frame
Corneal flattening and visual improvement	—

Countries

Egypt

Contacts

Public ContactAhmed Tawfik

Professor of ophthalmology in Zigzag University Hospital

Atawfika@gmail.com00201000089352

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Aug 9, 2026