Subtopic Deep Dive
Sutureless Intraocular Lens Fixation
Research Guide
What is Sutureless Intraocular Lens Fixation?
Sutureless intraocular lens fixation encompasses intrascleral, glued, and fibrin techniques for securing posterior chamber IOLs in eyes lacking capsular support, primarily for aphakia correction.
These methods avoid sutures to reduce complications like erosion and astigmatism. Key techniques include Yamane's 27-gauge needle-guided intrascleral fixation (Yamane et al., 2013, 330 citations) and Ohta's Y-fixation (Ohta et al., 2013, 135 citations). Over 20 papers since 2010 analyze stability and outcomes in complex cases.
Why It Matters
Sutureless fixation enables IOL implantation in trauma, ectopia lentis, and pediatric aphakia without donor tissue, improving visual rehabilitation (Kumar et al., 2010, 98 citations). Techniques like four-flanged fixation reduce operative time and complications in deficient capsules (Canabrava et al., 2019, 86 citations). Long-term studies show stable centration with minimal tilt, addressing dysphotopsia risks (Ashena et al., 2020, 115 citations).
Key Research Challenges
IOL Tilt and Decentration
Tilt beyond 2-3° and decentration over 0.3 mm cause dysphotopsia and aberrations (Ashena et al., 2020). Intrascleral techniques vary in haptic stability across IOL types (Czajka et al., 2019). Structural analysis reveals inconsistent scleral tunnel depth affecting centration (Todorich et al., 2017).
Long-term Scleral Stability
Haptic erosion and scleral melting occur over years post-fixation (Vounotrypidis et al., 2018). Pediatric cases show higher complication rates due to eye growth (Self et al., 2020). Multicenter reviews report variable 1-year outcomes (Czajka et al., 2019).
Technique Standardization
Variations in needle gauge, flanging, and glued methods lead to inconsistent results (Yamane et al., 2013; Canabrava et al., 2019). Trocar-assisted approaches differ in foldable IOL handling (Totan et al., 2012). Lack of unified protocols complicates comparisons (Ohta et al., 2013).
Essential Papers
Sutureless 27-Gauge Needle–Guided Intrascleral Intraocular Lens Implantation with Lamellar Scleral Dissection
Shin Yamane, Maiko Inoue, Akira Arakawa et al. · 2013 · Ophthalmology · 330 citations
Simplified and safe method of sutureless intrascleral posterior chamber intraocular lens fixation: Y-fixation technique
Toshihiko Ohta, Hiroshi Toshida, Akira Murakami · 2013 · Journal of Cataract & Refractive Surgery · 135 citations
We report a new surgical technique that allows intrascleral fixation of a posterior chamber intraocular lens (IOL) without sutures. The Y-fixation technique does not involve complicated intraocular...
Effect of Intraocular Lens Tilt and Decentration on Visual Acuity, Dysphotopsia and Wavefront Aberrations
Zahra Ashena, Sundas Maqsood, Syed Naqib Ahmed et al. · 2020 · Vision · 115 citations
Tilt and decentration of intraocular lenses (IOL) may occur secondary to a complicated cataract surgery or following an uneventful phacoemulsification. Although up to 2–3° tilt and a 0.2–0.3 mm dec...
Glued posterior chamber IOL in eyes with deficient capsular support: a retrospective analysis of 1-year post-operative outcomes
D. Ashok Kumar, Anika Agarwal, Gaurav Prakash et al. · 2010 · Eye · 98 citations
Secondary intraocular lens implantation: a large retrospective analysis
Efstathios Vounotrypidis, Iris Schuster, Marc J. Mackert et al. · 2018 · Graefe s Archive for Clinical and Experimental Ophthalmology · 90 citations
Trocar-assisted sutureless intrascleral posterior chamber foldable intra-ocular lens fixation
Yüksel Totan, Remzi Karadağ · 2012 · Eye · 90 citations
Four-Flanged Intrascleral Intraocular Lens Fixation Technique: No Flaps, No Knots, No Glue
Sérgio Canabrava, Ana Carolina Canêdo Domingos Lima, Guilherme Ribeiro · 2019 · Cornea · 86 citations
Purpose: To develop a novel, sutureless, single-piece, nonfoldable intraocular lens (IOL) intrascleral fixation technique based on the existing Malbran IOL scleral fixation and Yamane double-needle...
Reading Guide
Foundational Papers
Start with Yamane et al. (2013, 330 citations) for needle-guided intrascleral technique; Ohta et al. (2013, 135 citations) for simplified Y-fixation; Kumar et al. (2010, 98 citations) for glued IOL baselines.
Recent Advances
Study Canabrava et al. (2019, 86 citations) for flangeless four-flanged method; Czajka et al. (2019, 63 citations) for multicenter three-piece IOL review; Ashena et al. (2020, 115 citations) for tilt impacts.
Core Methods
Core techniques: 27-gauge needle with lamellar dissection (Yamane); trocar-assisted foldable fixation (Totan 2012); flanging haptics without glue/knots (Canabrava); glued capsular bag alternatives (Kumar).
How PapersFlow Helps You Research Sutureless Intraocular Lens Fixation
Discover & Search
Research Agent uses citationGraph on Yamane et al. (2013, 330 citations) to map 50+ intrascleral fixation derivatives, then findSimilarPapers reveals glued variants like Kumar et al. (2010). exaSearch queries 'sutureless IOL fixation complications' across 250M+ OpenAlex papers for latest multicenter data.
Analyze & Verify
Analysis Agent runs readPaperContent on Todorich et al. (2017) for structural metrics, then verifyResponse with CoVe cross-checks tilt data against Ashena et al. (2020). runPythonAnalysis imports citation counts into pandas for statistical comparison of techniques; GRADE assigns high evidence to Yamane (2013) randomized outcomes.
Synthesize & Write
Synthesis Agent detects gaps in pediatric sutureless fixation via Self et al. (2020), flags contradictions between Y-fixation and four-flanged stability (Ohta et al., 2013 vs. Canabrava et al., 2019). Writing Agent applies latexEditText for surgical workflow diagrams, latexSyncCitations integrates 20 papers, and latexCompile exports review manuscript; exportMermaid visualizes technique evolution.
Use Cases
"Compare complication rates in Yamane vs. four-flanged IOL fixation using Python stats."
Research Agent → searchPapers 'intrascleral IOL fixation complications' → Analysis Agent → runPythonAnalysis (pandas meta-analysis of Todorich 2017 and Canabrava 2019 rates) → bar plot of erosion incidences.
"Draft LaTeX review of intrascleral techniques with citations."
Synthesis Agent → gap detection across Yamane 2013, Ohta 2013 → Writing Agent → latexEditText (structure sections), latexSyncCitations (20 papers), latexCompile → PDF with technique flowchart.
"Find code for simulating IOL tilt aberrations."
Research Agent → paperExtractUrls from Ashena 2020 → Code Discovery → paperFindGithubRepo (wavefront simulation repos) → githubRepoInspect → Python script for 3D IOL decentration modeling.
Automated Workflows
Deep Research workflow scans 50+ papers via searchPapers on 'sutureless IOL fixation', structures report with GRADE-scored outcomes from Yamane (2013) and Czajka (2019). DeepScan applies 7-step CoVe to verify tilt metrics across Ashena (2020) and Todorich (2017), checkpointing statistical significance. Theorizer generates hypotheses on haptic material impacts from Ohta (2013) and Canabrava (2019) technique contrasts.
Frequently Asked Questions
What defines sutureless IOL fixation?
Techniques fix IOL haptics intrasclerally, via gluing, or fibrin without sutures, for capsular deficiency (Yamane et al., 2013).
What are main methods?
Intrascleral: Yamane needle-guided (2013), Y-fixation (Ohta 2013), four-flanged (Canabrava 2019); glued IOL (Kumar 2010).
What are key papers?
Yamane et al. (2013, 330 citations) for needle technique; Ohta et al. (2013, 135 citations) for Y-fixation; Ashena et al. (2020, 115 citations) for tilt effects.
What open problems remain?
Standardizing techniques across IOL types, long-term haptic stability in pediatrics, minimizing tilt/decentration (Czajka et al., 2019; Self et al., 2020).
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Part of the Intraocular Surgery and Lenses Research Guide