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Fyodorov Eye Microsurgery Complex, Moscow, Russia

Fyodorov Eye Microsurgery Complex, Moscow, Russia. Calibrated Vacuum Ring for Intrastromal Corneal Ring Segment Implantation in Different Types of Keratectasia K. Takchidi , B. Malyugin , S. Izmaylova , I. Latipov , S. Avramenko.

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Fyodorov Eye Microsurgery Complex, Moscow, Russia

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  1. Fyodorov Eye Microsurgery Complex, Moscow, Russia Calibrated Vacuum Ring for Intrastromal Corneal Ring Segment Implantation in Different Types of Keratectasia K. Takchidi, B. Malyugin, S. Izmaylova, I. Latipov, S. Avramenko

  2. Intracorneal ring segmentScientific Experimental Production Plant, Fyodorov Eye Microsurgery Complex, Russia • Arc length – 160º • Cross-section – hemisphere • Inner diameter – 5.0 mm • Outer diameter – 5.6 mm • Thickness range – 0.15– 0.45 mm • Material - PMMA

  3. Classical Ferrara method Post-op “Leakage effect”

  4. Our method of implantation • Implantation of 1 segment • 80% of corneal thickness • Incision doesn’t depend on meridian (steep, flat) • ICRS should cover the most ectatic area

  5. Total: 65 patients (68 eyes)1st group – II stage keratoconus (40 eyes)2nd group – IIIstage keratoconus (18 eyes)3rd group – pellucid marginal degeneration (4 eyes)4th group – post-Lasik keratectasia (6 eyes)

  6. Calibrated Vacuum Ring (CVR)

  7. UCVA and BCVA dynamic in 4 groups:

  8. Pre-op OCT Visante 2 mon post-op 1 mon post-op

  9. Pachymetry dynamic

  10. pre-op post-op

  11. Confocal microscopy pre-oppost-op

  12. Our results: Single ICRS implantation into the area of maximal corneal ectasia showed satisfactory orthopedic and functional result Best functional results gained patients with II stage keratoconus and post-Lasik keratectasia

  13. Our results: • The use of new device – CVR helps to fix the eye properly, precisely mark corneal zones, ease tunnel formation and segment insertion that lead to reduction of surgery duration • Final conclusion should be based on further observation

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