Irregular Astigmatism
Conditions
Brief 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.
Interventions
DEVICEIntrastromal 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.
Sponsors
Eye Hospital Pristina Kosovo
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Masking description
irregullar astigmatism group
Intervention model description
Irregular astigmatism group
Eligibility
Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
No
Inclusion criteria
* patients with irregular astigmatism * low visual acuity
Exclusion criteria
* history of glaucoma * retinal detachment * history of ocular inflamation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Increase of visual acuity | 12 months | Using intrastromal fresh corneal lenticule resulted in the increase of the visual acuity. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Decrease of irregular astigmatism | 12 months | In order to stabilize irregular astigmatism and reduce K-values, the intrastromal fresh corneal lenticule was implanted. |
Countries
Kosovo
Outcome results
None listed