Corneal safety and stability in cases of Small incision lenticule extraction with collagen cross-linking (SMILE Xtra)

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

PACTR

Registry ID

PACTR201810577524718

Enrollment

Registered

2018-10-15

Start date

2017-12-22

Completion date

Unknown

Last updated

2026-09-14

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

Conditions

Eye Diseases

Interventions

SMILE alone

SMILE Xtra

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients > 18 years of age Myopic error of > 6 D Thinner cornea < 520 microns, Abnormal corneal topography.

Exclusion criteria

Exclusion criteria: Associated corneal pathology, Established keratoconus, Corneal thickness < 450 microns Hyperopia or mixed astigmatism.

Design outcomes

Primary

Measure	Time frame
UDVA, CDVA	—

Secondary

Measure	Time frame
corneal bimechanical stability.. corneal resistance factor CRF	—

Countries

Egypt

Contacts

Public Contactmohsen aboushousha

Assistant professor faculty of medincine. alexandria. egypt

drmohsenmd@hotmail.com+201225466733

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026