Limbal Astigmatic Keratotomy to Correct High Degrees of Astigmatism After Phacoemulsification

Comparison Between Manual Limbal Astigmatic Keratotomy and Femtosecond Laser-guided Limbal Astigmatic Keratotomy for Correction of Astigmatism More Than Three Diopters After Phacoemulsification

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06179355

Enrollment

Registered

2023-12-21

Start date

2023-10-01

Completion date

2024-01-01

Last updated

2024-03-05

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

Conditions

Astigmatism

Brief summary

Compare manually performed Astigmatic Keratotomy to femtosecond laser astigmatic keratotomy to manage corneal astigmatism more than three diopters after phacoemulsification.

Detailed description

create circumferential corneal incisions, following the limbal curvature, at 1-1.5 mm anterior to the limbus, manually and by using femtosecond laser to correct corneal astigmatism more than three diopters after phacoemulsification.

Interventions

PROCEDUREmanual astigmatic keratotomy

manual astigmatic keratotomy using a diamond knife

PROCEDUREfemtosecond laser astigmatic keratotomy

astigmatic keratotomy using femtosecond lase

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Subject)

Eligibility

Sex/Gender

ALL

Age

21 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Possibility to have informed consent and attendance of all study visits. * Patients who have undergone conventional phacoemulsification at least one month ago. * Clear cornea. * Astigmatism more than 0.5 diopters.

Exclusion criteria

* Corneal opacity. * History of corneal surgery. * Thin cornea. * Astigmatism equal to or less than 0.5 diopters.

Design outcomes

Primary

Measure	Time frame	Description
astigmatism (Keratometric reading)	three month	diopters of the astigmatism after the procedure measured by Pentacam

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026