Treatment of Residual Refraction Errors 6 Months After Trifocal IOL Implantation With Relex-Smile
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Relex Smile, Relex smile with fresh corneal lenticule implantation.
- Who it may be relevant to
- Registry conditions: Pseudophakia, Myopia, Hyperopia. Basic parameters: 20 years — 45 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Kosovo
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Succesful Treatment of Residual Refraction Errors (Myopic and Hyperopic) 6 Months After Trifocal IOL Implantation With Relex-Smile
Overview
Successful treatment of residual refraction 6 months after IOL Implantation with Relex-Smile.
Detailed description
Residual refractive errors(myopia 50% and hyperopia 30%) are the main problems at patients after IOL Implantation.
The residual refraction (myopic and hyperopic) after IOL Implantation 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 aim of our study is to investigate the effect of Relex-Smile to treat the residual refraction errors (myopia and hypermetropia) 6 months after IOL Implantation.
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. In pseudophakic patients with hyperopic astigmatism and residual refraction ,corneal topography-guided intrastromal fresh lenticular implantation should be performed and the lenticule was placed according to the low K value.
At myopic residual refraction(-0.75D till -5.50D) after IOL Implantation The method used at the EYE Hospital Pristina by ReLex-SMILE is safe and effective method, since there is no flap and this prevents invasive damage to the anterior surface of the cornea contrary to the LASIK where flap is present posing risk for epithelial ingrowth.
At hyperopic residual refraction this study is to investigate the effect of fresh myopic corneal lenticule implantation as allogenic implant(-1.50D) that will be taken from myopic patients to implant on Pseudophakic patients with residual hypermetropia refraction (+1.0D) using VisuMax Femtosecond laser - Smile module surgery
Interventions
- Procedure Relex Smile
Procedure/Surgery: Relex Smile The residual myopic refraction on Pseudophakic patients after 6 months using Relex-Smile surgery by VisuMax femtosecond laser. The residual refractive power was min -0.75D.The optical zone (lenticule diameter) and cap diameter were 6.5 and 7.5 mm respectively. After dissection of both anterior and posterior planes, the lenticule was extracted through 120 degree superior 3.5 mm incision and marked with a sterile marker(ViscotMedster). - Procedure Relex smile with fresh corneal 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
Primary outcome measures
- Increase of visual acuity [Time frame: 6 months]
Eligibility criteria
Inclusion criteria
- residual hypermetropic, myopic refraction on pseudophakic patients
- low visual acuity
Exclusion criteria
- active anterior segment pathologic features,
- previous corneal or anterior segment surgery,
- glaucoma,
- retinal detachment
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Treatment
Study locations
Kosovo · 1 center
- Eye Hospital Pristina — Pristina
Identifiers
NCT: NCT04712318 · EHospitalPristina