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Advantages of LASIK with Thin Flaps using Moria One Use-Plus Microkeratome

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gracebrown
12 diapositives · 319 Views · Dec 19, 2019

Learn about the benefits of thin flaps in LASIK surgery using the Moria One Use-Plus microkeratome with disposable heads. Discover advantages such as improved corneal texture, reduced dry eyes, and enhanced safety. Get insights into the ergonomics and features of the Moria One Use-Plus keratome, ensuring precise and safe procedures. Explore results from a prospective study and understand the superior flap quality and outcomes achieved with this innovative technology.

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Advantages of LASIK with Thin Flaps using Moria One Use-Plus Microkeratome
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  1. LASIK with thin flapsusing theMoria One Use-Plus microkeratomewith the130 disposable heads Jérôme C. VRYGHEM, M.D. Brussels Eye Doctors Brussels, Belgium No financial interest

  2. Advantages of Thin Flaps • Cut through more superficial layers of the cornea • More solid texture: less tendency to form tension lines/wrinkle • The large corneal nerves trunks are below: • corneal sensation – more intact • less dry eyes • Less epithelial defects • The thinner the flap, the less epithelial trauma • Plastic is more gently to the epithelium • Thicker residual corneal bed • Greater safety: Further away from the 250 µm ectasia barrier • More possibilities: • Thinner corneas can be treated • Larger optical zones if needed can be treated • Enhancements still possible without going too thin

  3. Moria One Use-Plus keratome with metal ring • Ergonomic, pre-assembled and one-handed usage possible • Metal suction ring • 4 stops (7.5, 8, 8.5, 9) to change hinge size • 4 metal ring sizes to fit all keratometries (-1, 0, +1, +2) • 2 motors, one for blade oscillation, one for advancement

  4. Moria One Use-Plus keratome Sterile device Potentially lower incidence of DLK Decreases risk of transmission of disease Translucent head Makes it easier to visualize placement on the suction post Easy to assemble No risk of blade damage during assembly Single Use heads 130 head (for 130-µm flaps)

  5. Settings One Use Plus with 130 head and metal ring • One surgeon: Dr. J. C. Vryghem • Private clinic: Brussels Eye Doctors • Wavelight Allegreto laser for excimer ablation • Prospective study in 68 eyes of 34 patients • 2 months in 2007

  6. Methods One Use Plus with 130 head and metal ring • Flap thickness by subtractive pachymetry • Flap dimensions measured with calipers • Complications reported intraop and postop

  7. Results Flap Thickness One Use Plus with 130 head and metal ring • Microkeratome head • Speed • Average Thickness • Range 130 µ 2 (Fast) 123 +/- 12 µ 97 to 149 µ

  8. Results Flap Thickness versus Preop pachymetry Flap thickness (microns) Preop pachymetry (microns) n =68

  9. Results Vertical Flap Diameter Hinge size One Use Plus with 130 head and metal ring 9.9 mm ± 0.25 min 9.0 max 10.25 5.11 mm ± 0.56 min 4 max 6.5 Flap Diameter Hinge size

  10. Results Complications n = 68 • Button-hole • Free cap • Irregular flap • Thin flap requiring BCL • Epithelial sloughing • DLK • Epithelial ingrowth • Microstriae • Bleeding 0 0 0 0 3 0 0 25

  11. Results Flap and bed quality 28/68 eyes • Centration 95 % excellent • Edge quality 60 % excellent • Shape of the flap 100 % excellent • Bed quality 96 % excellent

  12. Conclusion Moria One Use Plus with metal head • My keratome of choice in LASIK • Excellent flap thickness predictability • Excellent safety profile • Ongoing study with 90 Head