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Treatment of Residual Hypermetropic Refraction on Pseudophakic Patients Using Allogenic Fresh Myopic Lenticule
Sponsor: Eye Hospital Pristina Kosovo
Summary
The residual hypermetropic refraction on pseudophakic(Trifocal IOL) patients is difficult to treat surgically. In addition, there are not many suitable options to offer such patients presenting with this condition. Two current common surgeries to treat residual hyperopic refraction are refractive lens exchange (RLE) and excimer laser ablation (LASIK or PRK). Laser procedures: Photorefractive keratectomy (PRK); Laser assisted in situ keratomileusis (LASIK); Risks of LASIK include abnormalities of the corneal flap, epithelial ingrowth, corneal ectasia, refractive surprises, irregular astigmatism, decentration, visual aberrations, a loss of BCVA, infectious keratitis, symptoms, and diffuse lamellar keratitis. Refractive lens exchange (RLE); The risks of RLE are similar to those of cataract surgery and include endophthalmitis, a loss of accommodation, vitreous loss with posterior capsular rupture, and retinal detachment. The method used at the EYE Hospital Pristina using fresh lenticule implantation by ReLex-SMILE is safe and effective method, since there is no flap this prevents invasive damage to the anterior surface of the cornea contrary to the LASIK where flap is present posing risk for epithelial ingrowth. Before SMILE,YAG-laser capsulotomy should be performed on all patients, regardless of posterior capsule ossification, in pseudophakic patients with residual refraction. When the YAG-laser is applied after the SMILE,there will be a diopter change.
Official title: Successful Treatment of Residual Hypermetropic Refraction on Pseudophakic Patients Using Allogenic Fresh Myopic Lenticule Implantation with ReLex-Smile Surgery
Key Details
Gender
All
Age Range
19 Years - 50 Years
Study Type
INTERVENTIONAL
Enrollment
34
Start Date
2018-04-01
Completion Date
2027-02-01
Last Updated
2025-02-25
Healthy Volunteers
No
Conditions
Interventions
FRESH CORNEAL MYOPIC LENTICULE IMPLANTATION
VisuMax femtosecond laser performed flap-cut procedure with an energy cut index of 30 nJ (150nJ), spot and track spacing surface cut of 4.5 μm, side cut 2.0 μm were used to create an intrastromal pocket into the patient's cornea to receive the donor lenticule. The stromal pocket diameter was set 7.6 to 8.0 mm (1 mm larger than the optical zone of the donor lenticule) and cap thickness was set to 130 μm from corneal surface and a 4 mm 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 4 mm superior incision. Incision position changed according to the position of the highest K values. Current orientation was marked with a sterile skin marker. The lenticule was positioned around the marked center of the cone and flattened out from the surface using a blunt spatula.
Locations (1)
Eye Hospital Pristina
Pristina, Kosovo