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Lasers Med Sci (2016) 31:10371039 DOI 10.1007/s10103-016-1915-x
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Efficacy of Pattern Scan Laser photocoagulation for superficial conjunctival nevi ablation
Young Min Park1,2 & Ji-Eun Lee1 & Jong Soo Lee3
Received: 24 December 2015 /Accepted: 16 February 2016 /Published online: 25 February 2016 # Springer-Verlag London 2016
Abstract This study reports the efficacy and safety of Pattern Scan Laser (PASCAL) photocoagulation in the removal of superficial conjunctival nevi. Superficial conjunctival nevi were removed from 10 eyes of 10 patients using PASCAL. The laser spots were 200 m in size, and the power delivered ranged from 250 to 300 mW. The duration of the laser pulse was kept at the minimum needed for adequate lesion removal. The duration of the laser pulse administered to the patients varied from 100 to 200 ms. Complete removal of the conjunctival nevus was observed in all the patients after PASCAL photocoagulation. Six months after treatment, complete reepithelialization of the overlying conjunctiva was noted. No signs of recurrence or scarring were found in any of the patients during the follow-up period. Pure thermal denaturation is the main mechanism of PASCAL photocoagulation for removal of superficial conjunctival nevi. PASCAL can be considered as an alternative to conventional argon laser treatment or surgery.
Keywords Conjunctival nevi . Laser . PASCAL . Pattern Scan Laser . Thermal denaturation
Introduction
Benign conjunctival melanocytic lesions are usually classified into two categories: superficial nevi and deep vascularized thickened nevi [1, 2]. Acquired superficial conjunctival nevi generally become clinically apparent in the first or second decade of life and rarely develop into malignant melanomas. However, acquired conjunctival nevi with nodularity, a high degree of pigmentation, or vascularized formation can develop into malignant melanomas. Treatment options for superficial and deep conjunctival nevi include surgical excision or argon laser photocoagulation [2]. Especially in cases of superficial flat nevi, most patients undergo removal using laser treatment to correct cosmetic problems.
Due to the many advantages of Pattern Scan Laser (PASCAL; Topcon Medical Laser Systems, Santa Clara, CA, USA), including safety, effectiveness, and less pain due to shorter exposure times,...