Prediction of refractive outcome in penetrating keratoplasty for keratoconus.
Cornea
; 15(5): 441-5, 1996 Sep.
Article
en En
| MEDLINE
| ID: mdl-8862918
ABSTRACT
We carried out a retrospective study to evaluate the relationship between vitreous cavity length, graft size, and final spherical equivalent refraction after penetrating keratoplasty (PK) for keratoconus. We found a straight-line relationship between vitreous cavity length and spherical equivalent for a one-surgeon series using the same technique throughout. The use of 0.25-mm undersized grafts shifted the results an average of 2.2 Dioptres in a more hypermetropic direction (p = 0.07 for the whole group, p < 0.01 for paired eyes). Hence the final spherical equivalent following PK for keratoconus can be predicted. Also, by altering the size of the donor graft button, the final refraction can be manipulated to some extent towards acceptable ametropia or to match the refraction of the fellow eye.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Refracción Ocular
/
Queratoplastia Penetrante
/
Córnea
/
Queratocono
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Cornea
Año:
1996
Tipo del documento:
Article
País de afiliación:
Reino Unido