研究目的
To evaluate the visual outcomes and complications after implantation of retrofixated iris claw (RFIC) lens in various challenging situations.
研究成果
RFIC lens implantation alone shows significant improvement in visual acuity with a safety index of 1.73 and lower complication rate (20.34%). When combined with other procedures, visual outcomes are still favorable but with higher complication rate (36.59%), primarily due to the complexity of co-existing pathologies. The study supports the use of RFIC lenses as a safe option in challenging cases, with complications more related to combined surgeries than the lens itself.
研究不足
Retrospective design may introduce selection bias; single-center study limits generalizability; small sample size in some subgroups (e.g., only 4 eyes in corneal combined group); mean follow-up of 13.09 months may not capture very long-term outcomes; no control group for direct comparison with other IOL types.
1:Experimental Design and Method Selection:
Retrospective analysis of cases from January 2007 to December 2014, categorized into group 1 (RFIC lens implantation alone) and group 2 (RFIC lens combined with vitreoretinal, corneal, or glaucoma procedures). Statistical analysis using SPSS ver. 20 with paired t-test and Mann-Whitney test for comparisons.
2:Sample Selection and Data Sources:
100 eyes of 83 patients with minimum follow-up of 6 months, selected based on electronic medical records from Nethradhama Superspeciality Eye Hospital. Eligibility criteria included healthy iris tissue and endothelial cell count >1500 cells/mm2.
3:List of Experimental Equipment and Materials:
RFIC lens (OV lens, Care Group, India, model ICLIP-5, PMMA material, optic size
4:0mm, overall diameter 5mm), diamond knife, disposable crescent blade, 1mm diamond knife, automated anterior vitrectomy system (high cutting rate 800 cpm), Budo's lens holding forceps, fine tip titanium enclavation forceps, hypromellose 2% (Viscomet PF, Unimed technologies), non-contact tonometer, specular microscope. Experimental Procedures and Operational Workflow:
Standard surgical technique by a single surgeon under local/general anesthesia. Steps include conjunctival peritomy, scleral incision, paracentesis, anterior vitrectomy if indicated, pupillary miosis with pilocarpine, RFIC lens introduction and enclavation using forceps. Postoperative evaluations included UDVA, CDVA, anterior and posterior segment exams, IOP measurements, and specular microscopy at follow-ups.
5:Data Analysis Methods:
Quantitative data analyzed with paired t-test for within-group comparisons and Mann-Whitney test for between-group comparisons, with p≤0.05 considered significant.
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获取完整内容-
RFIC lens
ICLIP-5
Care Group
Implantation for visual restoration in aphakia or lens dislocation cases
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diamond knife
Creating scleral incisions and paracentesis
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disposable crescent blade
Fashioning sclerocorneal tunnel
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automated anterior vitrectomy system
Performing anterior vitrectomy
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Budo's lens holding forceps
Holding and manipulating the RFIC lens during surgery
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fine tip titanium enclavation forceps
Enclavating the iris into the haptic claw
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hypromellose 2%
Viscomet PF
Unimed technologies
Deepening the anterior chamber during surgery
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non-contact tonometer
Measuring intraocular pressure
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specular microscope
Performing specular microscopy for endothelial cell count
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