History

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  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • The rings were first designed in 1950 by J. Barraquer in Colombia. Since then, there was a continuous improvement in its shape and design. It was initially indicated for myopia correction. In 1996, Dr Paulo Ferrara from Brazil began to use the rings for the keratoconus treatment which remains as the main indication for the ring implantation.
  • History

    1. 1. History Ferrara RingPaulo Ferrara, MD, PhDLeonardo Torquetti, MD, PhD
    2. 2. HISTORY1950 - Barraquer, J., Intracorneal implants for high myopia1966 - Blavatskaya - Corneal rings from corneal tissue1986 - Simon, G. - Silicon Rings1987 - Fleming - Adjustable rings1991 - Nosé, W - Single piece rings for low myopia1991- Ferrara, P., Single piece rings for high myopia1996 - Ferrara, P. - Ring segments for Keratoconus1997 - Colin, J.- Ring segments for Keratoconus
    3. 3. HISTORY1950 - Barraquer JRings implanted for correction of highmyopia
    4. 4. HISTORY1986 - Simon, G. - Silicon RingsRings implanted through a small pocket.
    5. 5. HISTORY1987 - FlemingAdjustable rings - cornealsteepening and flatteningadjusted by the ring.
    6. 6. HISTORY1986 - Ferrara, P - Ferrara RingsQuestions to be answered:Optical zone?Shape?Surgical technique?Depth?Tolerance and stability? Pocket incision
    7. 7. HISTORY1991 - Ferrara RingMicrokeratectomy incision Single piece ring
    8. 8. HISTORYSingle piece ring
    9. 9. HISTORY1994 - Ferrara RingTunnel incision Tunnelization instruments
    10. 10. HISTORY
    11. 11. HISTORY
    12. 12. HISTORY
    13. 13. HISTORY The coincidence of the incision and the ringimpaired the healing process and led to extrusion in several cases. The full ring is “splitted” in 2 segments
    14. 14. HISTORY
    15. 15. HISTORY1995 - Ferrara RingLow predictability for myopiaNew indication:Keratoconus patients intolerantto contact lens
    16. 16. HISTORY1996 - Ferrara RingFirst nomogram for keratoconusImprovement of the design,including the holes at the tip ofsegments.
    17. 17. HISTORY2000 - Ferrara RingUse of asymetric segments andsingle segments
    18. 18. HISTORY2002 - Ferrara RingNomogram based on sphericalequivalent.2006 - Ferrara RingNomogram based on topographicastigmatism
    19. 19. HISTORY2006 - Ferrara RingLaunching of the yellow ringto reduce halos and glare/
    20. 20. HISTORY2009 - Ferrara RingNomogram based on cornealasphericity.
    21. 21. Developed BY Dr. Leonardo TorquettiShares and Comments are well come.

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