Astigmatismo induzido após facoemulsificação através de incisões auto-selantes escleral superior e corneana temporal^*

Induced astigmatism after phacoemultification by self sealing superior scleral and temporal clear corneal incisions

RESUMO

Objetivos:

Verificar o astigmatismo induzido (AI) quando a facoemulsificação endocapsular é realizada através de indecisões auto-selantes de 3,2 mm esclerais superiores e corneanas temporais; e comparar o AI entre os dois tipos de incisões.

Materiais e Métodos:

A amostra do trabalho foi constituída de 24 pacientes selecionados prospectivamente e submetidos à facoemulsificação endocapsular através de incisões auto-selantes de 3,2 mm esclerais superiores (grupo 1-12 pacientes) e corneanas temporais (grupo 2-12 pacientes). Foram realizadas medidas com topografia computadorizada de córnea que permitiram a avaliação do AI através de Cravy's em 5,30 e 90 dias de pós-operatório.

Resultados:

O AI foi não significativo em 5,30 e 90 dias de pós-operatório nos dois grupos (0,36, 0,21 e 0,01 - grupo 1; 0,19, 0,16 e -0,04 -grupo 2); não houve diferença significativa entre o AI dos dois grupos.

Conclusão:

A facoemulsificação endocapsular quando realizada através de incisões auto-selantes de 3,2 mm esclerais superiores e corneanas temporais não induzem astigmatismo significativo em 5,30 e 90 dias de pós-operatório. Não houve diferença entre os achados dos dois grupos.

Palavras-chave:
Astigmatismo induzido; Facoemulsificação; Incisões auto-selantes

SUMMARY

Purpose:

To verify the induced astigmatism (IA) when endocapsular phacoemulsification is made with a 3,2 mm self seading superior scleral and temporal clear corneal incisions; and to compare the IA between the two types of incisions.

Methods:

The sample comprised 24 patients selected prospectively and submitted to endocapsular phacoemulsification with superior scleral (group 1-12 patients) and temporal clear corneal (group 2-12 patients) incisions. Measurerments by corneal computerized topography enabled evaluation using Cravy's method of the induced astigmatism after 5,30 and 90 days post-operatively.

Results:

It was demonstrated that the IA was not significant at 5,30 and 90 days in both groups (0.36, 0.21, and 0.01 -group 1; 0.19, 0.16, and -0.04 group 2); in addition no significant difference between the IA of both groups was demonstrated.

Conclusions:

Endocapsular phacoemulsification with superior scleral and temporal clear corneal 3.2 mm incisions does not induce significant astigmatism at 5,30, and 90 days post-operatively. There was no difference between the outcomes of both groups.

Key words:
Induced astigmatism; Phacoemulsification; Self sealing incisions

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• *
  Parte da tese de mestrado (UFRJ). Apresentado como tema livre no IX Congresso Internacional da SBO, junho 1996.

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Datas de Publicação

• Publicação nesta coleção
  Feb 1998