Contact Transscleral Continuous-wave Nd:YAG Laser Retinopexy: Comparison with Cryoretinopexy.

Park, Yeoung Geol; Lee, Moon Key

Original Article

Journal of the Korean Ophthalmological Society 1993;34(2):122-129.
Published online February 1, 1993.

Contact Transscleral Continuous-wave Nd:YAG Laser Retinopexy: Comparison with Cryoretinopexy.

Yeoung Geol Park, Moon Key Lee

Department of Ophthalmology, Chonnam University Medical School, Korea.

접촉성 경공막 연속파 YAC laser 망막유착술 - 냉동망막유착술과의 비교

박영걸(Yeoung Geol Park),이문기(Moon Key Lee)

Abstract

We studied clinical applicability of the contact transscleral retinopexy using the continuous-wave Nd:YAG (CW-YAG) laser. CW-YAG laser photocoagulation was done over sclera through contact probe in the pigmented rabbit eyes. Cryoretinopexy was also done and their morphologic findings were compared. Acute lesions produced with the laser photocoagulation were noted to have the characteristic white-colored distinct depigmentation. Its microscopic findings were oharacterized by choroidal necrosis, disruption of Bruch's membrane, dispersion of retinal pigment epithelial cells, and disorganization of sensory retina. Acute lesions after the cryoretinopexy were much more broader in its area and showed slight tanslucent retinal edema. Its microscopic findings showed relatively well-preserved choroid including Bruch's membrane. These data demonstrated that the contact transscleral CW-YAG laser retinopexy is capable of inducing more localized, stronger chorioretinal adhesion than the cryoretinopexy.

Key Words: Chorioretinal adhesion;Continuous-wave Nd:YAG laser;Cryoretinopexy;Diathermy;Laser retinopexy