NCT04987060

Intrastromal Fresh Human Corneal Lenticule Implantation Using Smile Surgery for Treatment of Irregular Corneal Astigmatism After Penetrating Keratoplasty (new Approach)

• Status: Active Not Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 24 (estimated)
• Sponsor: Eye Hospital Pristina Kosovo · Academic / Other
• Sex: All
• Age: 18 Years – 55 Years
• Healthy volunteers: Not accepted

Summary

The aim of the study is to present the effect of implanting intrastromal fresh corneal lenticule by SMILE surgery as a new method-approach to correct the corneal shape on purpose to reduce irregular astigmatism and increasing visual acuity after penetrating keratoplasty.

Detailed description

Irregular astigmatism occurs when the curvature of the eye is pronounced in any direction, not just the center. The curve could be steeper towards the bottom than on top, or it could be any configuration in which the eye's surface area is uneven. Irregular astigmatism usually can result from corneal degenerations(keratoconus,pellucid marginal degeneration,keratoglobus), corneal surgery or trauma. Irregular astigmatism is still the main cause of decreased visual acuity after penetrating keratoplasty. Our study present new therapeutic method and new technology to manage irregular astigmatism after PK. Knowing that the incidence of high and irregular astigmatism after PK is still a frequent complication and source of frustration for patients and corneal surgeons our study present an adequate surgical technique implanting intrastromal human corneal lenticule using SMILE for treatment of corneal irregular astigmatism after PK trying satisfy patients visual expectations.

Conditions

• Irregular Astigmatism

Interventions

Type	Name	Description
DEVICE	Intrastromal Fresh Human Lenticule Implantation	The stromal pocket diameter was set 8.0 mm and cap thickness was set to 140 μm from corneal surface and a 2mm superior incision. Hinge position flap was set at 90°, angle 50° and width 4 mm, side cut angle 90°. The pocket was dissected using a blunt spatula washed with normal saline. The lenticule was held with lenticule forceps and gently inserted into the pocket through the 2 mm superior incision. Incision position changed according to the position of the highest K values.

Timeline

• Start date: 2017-03-01
• Primary completion: 2021-03-01
• Completion: 2027-12-01
• First posted: 2021-08-03
• Last updated: 2025-02-26

Locations

1 site across 1 country: Kosovo