Peyman G A, Li M, Yoneya S, Goldberg M F, Raichand M
Ophthalmic Surg. 1981 Jul;12(7):481-90.
Photocoagulation of the monkey fundus with an argon-krypton laser photocoagulator was performed. Lesions produced by argon and krypton wavelengths were compared at various power settings, spot sizes, and exposure durations. At low energy levels argon laser lesions appeared clinically stronger than those produced by the krypton mode. Lesions in the foveal area produced with the argon laser demonstrated more extensive microscopic damage to the inner retinal layers than did those produced with the krypton laser. Histologically, both modalities affected the outer layers of the retina. However, the krypton wavelength affected more of the choriocapillaries and the larger choroidal vessels than the argon wavelengths. Conversely, argon laser coagulation of the retinal vessels damaged the perivascular tissue in the nerve fiber layer more than the krypton laser did. Rupture of Bruch's membrane and choroidal hemorrhage occurred frequently with the krypton laser at low energy levels when a small spot size and a short coagulation time were used. Both complications were less likely to occur with argon burns at similar dosage parameters. By choosing larger spot sizes and longer coagulation times for the krypton laser, these complications were prevented.
使用氩氪激光光凝器对猴眼底进行光凝。比较了在不同功率设置、光斑大小和曝光持续时间下，氩光和氪光波长产生的病变。在低能量水平下，氩激光病变在临床上似乎比氪模式产生的病变更强。与氪激光产生的病变相比，氩激光在黄斑区产生的病变对视网膜内层的微观损伤更广泛。组织学上，两种方式均影响视网膜外层。然而，氪波长比氩波长对脉络膜毛细血管和较大的脉络膜血管影响更大。相反，氩激光对视网膜血管的凝固对神经纤维层血管周围组织的损伤比氪激光更大。当使用小光斑尺寸和短凝固时间时，低能量水平的氪激光经常会导致布鲁赫膜破裂和脉络膜出血。在相似的剂量参数下，氩激光灼伤发生这两种并发症的可能性较小。通过为氪激光选择更大的光斑尺寸和更长的凝固时间，可以预防这些并发症。
