J Korean Ophthalmol Soc.  1993 Feb;34(2):122-129.

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

• Park YG
• Lee MK

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.

Keyword

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

MeSH Terms

Bruch Membrane
Choroid
Diathermy
Epithelial Cells
Light Coagulation
Necrosis
Papilledema
Retina
Retinaldehyde
Sclera
Retinaldehyde