The Relationship with the Density of Lens Nucleus and Phacoemulsification Time.

Koo, Tae Hyung; Chung, Sung Kun; Baek, Nam Ho

Original Article

Journal of the Korean Ophthalmological Society 1998;39(5):912-917.
Published online May 1, 1998.

The Relationship with the Density of Lens Nucleus and Phacoemulsification Time.

Tae Hyung Koo, Sung Kun Chung, Nam Ho Baek

Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Korea.

수정체의 혼탁정도가 수정체유화술 소요시가에 미치는 영향

구태형(Tae Hyung Koo),정성근(Sung Kun Chung),백남호(Nam Ho Baek)

Abstract

To investigate the relationship of the density, thickness of lens nucleus and cortex with phacoemulsification time, we measured the preoperative density and length of lens nucleus and cortex of 100 eyes with a Scheimpflug camera. We performed phacoemulsification on the same phacoemulsification technique using a phacoemulsifier aspirator by the same surgeon. The preoperative mean values of the density of lens nucleus and cortex were 127. 09+/-57.44 and 30. 33+/-15. 24, respectively. The mean values of the thickness for both were 3.05+/-0.42mm and 0.65+/-0.17mm, respectively. The mean value of phacoemulsification time was 92.68+/-56.98 seconds. The phacoemulsification time was increased significantly as the density of lens nucleus was increased (P<0.0001). However, the thickness of the lens nucleus and cortex and the density of cortex had no significant effect on the phacoemulsification time (p=0. 235, p=0.811). Preoperative evaluation with a Scheimpflug camera is particularly valuable for cataractous patients with corneal endothelial disease deciding on phacoemulsification.

Key Words: Density of lens nucleus;Phacoemulsification time;Scheimpflug camera