| Short-term Change of Corneal Endothelium after Phacoemulsificatin using Phaco-drill Technique. |
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Yong Hae Kim, Choun Ki Joo |
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Department of Ophthalmology, Kangnam St. Mary Hospital, The Catholic UniversityMedical College. |
| Phaco-drill방법을 이용한 초음파유화술후 각막 내피세포의 단기 변화 |
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김용해(Yong Hae Kim),주천기(Choun Ki Joo) |
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| Abstract |
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Phaco-drill technuque, is a method of phacoemulsifying cataractous lens with a bevel down position of phacotip, thus concentrating vacuum and ultrasonic power on center of the lens. This enables the phacoemulsification to be completed with a lower setting of energy. In this study, we evaluated the efficacy of the phaco-drill technique by measuring corneal endothelial cell damage. Since August 1997, we examined 170 patients who had under-gone phacoemulsification using phaco-drill technique, for uncorrected visual acuity, number, shape and size of corneal endothelial cell, and corneal thickness before and 2 months after surgery. the mean visual acuity was 0.26+/-0.24 before operation,and the mean visual acuity at 1 day and 2 months postlperatively was 0.59+/-0.32 and 0.82+/-0.26, respectively. The mean time of phacoemulsification was 58+/-41 seconds, and the average power(surgeon mode)was 8.6+/-0.26%. Mean volume of irrigating solution used in the operation was 116.12+/-52.10cc and that of aspirated solution was 63.34+/-30.37cc. The number of endothelial cells decreased from 2450+/-308.6 cell/mm2 before operation to 2234+/-372.2 cell/mm2 2 months after operation(9.2% decrease). The size of endothelial cells increased from 33.78+/-5.53/micrometer(2) before operation to 34.70+/-5.79/micrometer(2) 2 months after the operation(2.7% increase). The regularity of the cells (hexagonality) showed a decrease of 3%, from 57.47+/-10.16 before operation to 55.81+/-10.49% 2 months after the operation. The corneal thickness increased from 528+/- 36micrometer before operation to 590+/-8micrometer 1 dat(11.7% increase) and 531+/-4micrometer(0.5% increase) after the operation. From the results of this study we suggested that phaco-drill technique might be one of effective methods of phacoemulsification for less damage of corneal endothelial cells and less fluid consumption. |
| Key Words:
Phaco-drill technique;The number of corneal endothelial cell;Hexagonality;The size of cell;The thickness of cornea |
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