Limbal Astigmatic Keratotomy to Correct High Degrees of Astigmatism After Phacoemulsification

Assiut University

Status: Completed

Conditions: Astigmatism

Treatments: Procedure: manual astigmatic keratotomy; Procedure: femtosecond laser astigmatic keratotomy

Study type: Interventional

Funder types: Other

Identifiers

NCT06179355

1727367365

Details and patient eligibility

About

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

Full 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.

Enrollment: 40 patients

Sex: All

Ages: 21+ years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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40 participants in 2 patient groups

manual Astigmatic Keratotomy

Experimental group

Description:

manual limbal Astigmatic Keratotomy using a diamond knife group

Treatment:

Procedure: manual astigmatic keratotomy

femtosecond laser Astigmatic Keratotomy

Experimental group

Description:

Femtosecond laser-guided astigmatic keratotomy group

Treatment:

Procedure: femtosecond laser astigmatic keratotomy