|
NR. 2/2006
|
|
|
|
|
|
|
|
|
Zastosowanie
pier¶cieni ¶ródrogówkowych w leczeniu stożka rogówki
Use of Intracorneal Rings in Keratoconus Treatment
Iwona Liberek1,3, Jerzy
Szaflik2,3, Justyna Izdebska2,3
1 Klinika Okulistyki Centrum Medycznego Kształcenia
Podyplomowego w Warszawie
Po. kierownika: dr n. med. Iwona Liberek
2 Katedra i Klinika Okulistyki II Wydziału
Lekarskiego Akademii Medycznej w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik
3 Centrum Mikrochirurgii Oka LASER w Warszawie
Kierownik: prof. dr hab. n. med. Jerzy Szaflik |
|
|
|
|
|
|
|
| Summary: |
Intacs represent a new
method for improving visual level in keratoconus
patients who cannot improve satisfactory visual acuity
in spectacle or contact lens correction. Each ring, made
of polymethyl methacrylate (PMMA), has a hexagonal
cross-section, with an outer diameter of 8.1 mm and
inner diameter of 6.8 mm. The rings are designed to
alter the anterior corneal curvature. The degree of
cornea flattening of keratoconus reduction depends on
how this ring is inserted in the peripheral cornea.
Intacs cause a local separation of the corneal layers,
thus having a direct effect on flattening of the cornea
and reducing myopia and myopic astigmatism. The thicker
the rings, the greater the layer separation and
flattening. The study discusses contraindications for
and technique of inserting intracorneal rings based on
own experience.
Conclusion: Based on literature and own observation, we
can say that although intracorneal rings do not
eliminate progression of keratoconus growth, they can
delay the necessity to transplant the cornea, slow down
the the process of corneal thinning and allow the
patients to return to wear contact lenses. |
| |
|
| Key words: |
keratoconus, Intracorneal
rings, INTACS. |
|
|
|
|
|
|
|
|
