Initial Experience with
the 355º Keraring
Luis Cadarso
Hospital Meixoeiro Vigo
Clinica Cadarso
Vigo. Spain
No financial interests related to this topic
Keraring SI-355º
• Arc Length 355º
• Inner ∅ 5 mm
• Outer ∅ 6,4 mm
• Thickness: 200 µm, 300 µm
Long Arc Length ICR for Central KC
• Main Indication
• Central Nipple KC
• Requisites:
• Central Cone w Low Astigmatism
• K max < 70 D
• CCT > 400 µm
• Central Cornea must be transparent
Keraring SI-355º
Nomogram
• SI 355º 200µm →SE ≤ 6 diopt
• SI 355º 300µm →SE > 6 diopt
Keraring SI-355º
The 5º gap must be along the incisional axis
Tunnel made w Femtosecond laser is mandatory
• 80% thickness at ∅ 5,7 mm
• Minimum depth 300µm
• Inner ∅ 5 mm
• Outer ∅ 6,5 mm
• Incision axis: Steep Meridian
Femtosecond Laser Tunnel
Visumax 500Hz (Zeiss)
Femtosecond Laser Tunnel
Visumax 500Hz (Zeiss)
• 4 eyes of 4 pat. with central KC
• 3 OD and 1 OS
• Age: 17, 28, 29, 37 yo
• Sex: 2 ♂ and 2♀
Study Population
Results 1 month Follow-up
Preop Postop
UDVA 0.08 0.19
CDVA 0.4 0.55
Sphere -9,69 ± 5,7 -4,88 ± 4,31
Cylinder -2,38 ± 1,9 -1 ± 1,41
Km 52,46 48,89
Keraring SI 355 / 200µm in all the patients
Preop Postop
PreopPostop Dif
CONCLUSIONS
Implantation of the Keraring 355º
• Improved Visual Acuity
• Reduced Myopic and Astigmatic components
• Flattened and Regularized the central cornea
• Safe in this small group of patients

Initial Experience with the 355º Keraring - by Dr. Luis Cadarso

  • 1.
    Initial Experience with the355º Keraring Luis Cadarso Hospital Meixoeiro Vigo Clinica Cadarso Vigo. Spain No financial interests related to this topic
  • 2.
    Keraring SI-355º • ArcLength 355º • Inner ∅ 5 mm • Outer ∅ 6,4 mm • Thickness: 200 µm, 300 µm Long Arc Length ICR for Central KC
  • 3.
    • Main Indication •Central Nipple KC • Requisites: • Central Cone w Low Astigmatism • K max < 70 D • CCT > 400 µm • Central Cornea must be transparent Keraring SI-355º
  • 4.
    Nomogram • SI 355º200µm →SE ≤ 6 diopt • SI 355º 300µm →SE > 6 diopt Keraring SI-355º The 5º gap must be along the incisional axis Tunnel made w Femtosecond laser is mandatory
  • 5.
    • 80% thicknessat ∅ 5,7 mm • Minimum depth 300µm • Inner ∅ 5 mm • Outer ∅ 6,5 mm • Incision axis: Steep Meridian Femtosecond Laser Tunnel Visumax 500Hz (Zeiss)
  • 6.
  • 7.
    • 4 eyesof 4 pat. with central KC • 3 OD and 1 OS • Age: 17, 28, 29, 37 yo • Sex: 2 ♂ and 2♀ Study Population
  • 8.
    Results 1 monthFollow-up Preop Postop UDVA 0.08 0.19 CDVA 0.4 0.55 Sphere -9,69 ± 5,7 -4,88 ± 4,31 Cylinder -2,38 ± 1,9 -1 ± 1,41 Km 52,46 48,89 Keraring SI 355 / 200µm in all the patients
  • 9.
  • 10.
  • 11.
    CONCLUSIONS Implantation of theKeraring 355º • Improved Visual Acuity • Reduced Myopic and Astigmatic components • Flattened and Regularized the central cornea • Safe in this small group of patients