多点扫描激光及其在治疗视网膜血管疾病中的应用

Multi-spot scanning laser and its application in treatment of retinal vascular disease

多点扫描激光是采用半自动模式的视网膜扫描光凝器,与传统单点激光相比,曝光时间短、能量密度低、定位更精准,踩一次脚踏开关可以连续发射多个激光脉冲,通过预设模式形成不同排列形状的激光光斑,如圆型、矩型、弧型和“黄斑型”等.在治疗糖尿病视网膜病变时,一次或两次治疗即可完成全视网膜光凝术,采用弧型或“黄斑型”预设模式一次脚踏开关即可完成黄斑区光凝.此外,还可用于治疗视网膜中央静脉阻塞和视网膜分支静脉阻塞、新生血管性青光眼及Coats病等视网膜血管疾病,其疗效与传统单点激光相似,且不良反应少,患者的舒适度好.

Multi-spot scanning laser,a semi-automated patterned scanning retinal photocoagulator,allows for shorter pulse duration,lower fluence,greater precision than single spot application.Up to 56 （the smallest number being 1） laser spots can be delivered by a single foot pedal depression.And this system has a collection of adjustable predetermined pattern shapes and sizes,including lines,squares,circular arcs,as well as user-defined patterns,and an adjustable ＆quot;foveal exclusion zone＆quot;.Clinically,while treating diabetic retinopathy,panretinal photocoagulation can be accomplished in one or two sessions,and by applying the particular pattern,the macular coagulation can be finished in one foot pedal depression.Moreover,in treatment for retinal vascular diseases,such as central or branch retinal vein occlusion,neovascular glaucoma,Coats disease and so forth,compared with traditional lasers,multi-spot scanning laser has similar clinical efficacy but less adverse reactions,more patients＆#39; comfort.