2. HISTORY
1950 - Barraquer, J., Intracorneal implants for high myopia
1966 - Blavatskaya - Corneal rings from corneal tissue
1986 - Simon, G. - Silicon Rings
1987 - Fleming - Adjustable rings
1991 - Nosé, W - Single piece rings for low myopia
1991- Ferrara, P., Single piece rings for high myopia
1996 - Ferrara, P. - Ring segments for Keratoconus
1997 - Colin, J.- Ring segments for Keratoconus
6. HISTORY
1986 - Ferrara, P - Ferrara Rings
Questions to be answered:
Optical zone?
Shape?
Surgical technique?
Depth?
Tolerance and stability?
Pocket incision
13. HISTORY
The coincidence of the incision and the ring
impaired the healing process and led to extrusion
in several cases.
The full ring is “splitted” in 2 segments
21. Developed BY
Dr. Leonardo Torquetti
Shares and Comments are well come.
Editor's Notes
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.
