Classification of Ptosis in Korea.

Kim, In Sik; Choi, Jung Bum; Rah, Sang Hoon; Lee, Sang Yeul

Original Article

Journal of the Korean Ophthalmological Society 2005;46(8):1262-1269.
Published online August 31, 2005.

Classification of Ptosis in Korea.

In Sik Kim, Jung Bum Choi, Sang Hoon Rah, Sang Yeul Lee

¹The Institute of Vision Research, Department of Ophthalmology, College of Medicine, Yonsei University, Seoul, Korea. sylee@yumc.yonsei.ac.kr
²Department of Ophthalmology, Hallym University College of Medicine Seoul Eye Center, Seoul, Korea.
³Department of Ophthalmology, Wonju Christian Hospital, Yonsei University, Wonju College of Medicine, Wonju, Korea.

한국인에서 안검하수의 원인별 분류

김인식¹,최정범²,라상훈³,이상렬¹

The Institute of Vision Research, Department of Ophthalmology, College of Medicine, Yonsei University¹, Seoul, Korea Department of Ophthalmology, Hallym University College of Medicine Seoul Eye Center², Seoul, Korea Department of Ophthalmology, Wonju Christian Hospital, Yonsei University, Wonju College of Medicine³, Wonju, Korea

Correspondence: In-Sik Kim, M.D.¹

Abstract

PURPOSE
To classify blepharoptosis in Korean patients, investigate the type of surgery used, and to compare the results with the data from Western countries. METHODS: A total of 913 patients (1147 eyes) who underwent surgery for blepharoptosis from 1991 to 2003 were classified as either being congenital or acquired blepharoptosis, and then further subclassified into myogenic, aponeurotic, mechanical, or neurogenic ptosis according to Freuh's mechanistic classification. The type of surgery for each type of blepharoptosis was investigated. RESULTS: Of the 913 patients, 695 (76.1%) were congenital type, and 218 (23.9%) were acquired type. Freuh's mechanistic classification by type was 84.7% myogenic type, 10.5% aponeurotic, 3.4% neurogenic, and 1.6% mechanical. By order of frequency, the type of surgery used was 60% frontalis suspension, 26.4% levator resection, 12.2% aponeurosis repair, and 1.4% conjunctivomullerectomy. CONCLUSIONS: Congenital type was more common than acquired type. The proportion of congenital type was higher than the results reported from Western countries, but lower than those of previous Korean studies. This is probably due to the increased number of adults undergoing surgery for blepharoptosis compared to the past, and is a reflection of influence of socio-economic levels.

Key Words: Acquired type;Blepharoptosis;Congenital type;Mechanistic classification