Efficacy of krypton yellow laser for polypoidal choroidal vasculopathy outside the macular
SHEN Ran1 WANG Fenghua2▲ GUO Lixia1 YANG Liping1 WANG Yanna1
1.Department of Ophthalmology, Handan City Eye Hospital the Third Hospital of Handan, Hebei Province, Handan 056001, China;
2.Department of Ophtalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
Abstract:Objective To observe the effect of krypton yellow laser for polypoidal choroidal vasculopathy (PCV) outside the macular. Methods Eleven cases (11 eyes) with PCV located out of the macular central fovea with 500 μm were selected in Handan City Eye Hospital from June 2015 to June 2017, that were diagnosed by clinical features, medical history, fundus fluorescence angiography (FFA), indocyanine green angiography (ICGA) and optical coherence tomography (OCT). All patients were treated with krypton yellow laser 2-3 times with interval of 15 days to 1 month. The re-treatment indications were according to the color fundus lesions, the reaction of laser, fundus angiography (FFA and ICGA) and OCT examination. All the patients were followed up for 6 to 12 months. Visual acuity, the best corrected visual acuity, FFA, ICGA and OCT results were observed. Results There were 3 eyes that were treated with laser 2 times, while 8 eyes were treated with 3 times. There were 6 patients (6 eyes) replied that the visual acuity improved compared with that before treatment and visual deformation mainly eliminated. There were 2 patients (2 eyes) that had a slightly improvement in the visual acuity and the shadow decreased. Three patients (3 eyes) had significant visual improvement with shadow disappearing. The best corrected vision acuity was 0.1-0.6. FFA and ICG results showed atrophy of PCV lesions. Conclusion Effect of krypton yellow laser treatment for PCV located out of the macular central fovea with 500 μm was reliable, that can stabilize and improve patients′ vision acuity effectively, preventing the further progress of PCV, inexpensive and effective.