A Laboratory Study of Diathermy Capsulorhexis.

Paek, Kwang Uk; Hur, Young Keun; Hur, Jun

Original Article

Journal of the Korean Ophthalmological Society 1999;40(8):2138-2144.
Published online August 1, 1999.

A Laboratory Study of Diathermy Capsulorhexis.

Kwang Uk Paek, Young Keun Hur, Jun Hur

Department of Ophthalmology, Pusan Paik Hospital, The Inje University Medical College, Pusan, Korea.

수정체낭투열절개술의 실험적 연구

백광욱(Kwang Uk Paek),허영근(Young Keun Hur),허준(Jun Hur)

Abstract

This study was performed to evaluate histopathologic and physical characteristics of anterior capsule during capsulorhexis with a new high-frequency diathermy.The authors investigated the histopathologic characteristics of anterior capsule according to coagulation time and anterior capsular diameter in diathermy capsulorhesxis(DC),comparing with those in continuous curvilinear capsulorhexis(CCC). Thermally induced histopathologic alter-ation was localized at anterior capsule with coagulation for 0.5 second, while it was extended into cortex with coagulation for 2 seconds.When capsulorhexis was performed with diameter of 6 mmand the margin was pulled with iris retractor,anterior capsular edge was fully extended both in CCC and DC.But with diameter of 3.5 mm,DC mostly led to tear of capsular edge on its extension,while CCC permitted full extension of anterior capsular edge.These results suggest that strength of anterior capsular edge in DC is inferior to that in CCC.However diathermy capsulorhexis is a useful alternative technique in cases,which CCC is difficult to perform,such ashypermature or congenital cataracts.

Key Words: Anterior capsule;Diathermy capsulorhexis;High-frequency diathermy