Objective:To observe the clinical effect of prolonged photodynamic therapy (PDT) irradiation time combined with intravitreal injection of ranibizumab in the treatment of circumscribed choroidal hemangioma (CCH).Methods:A retrospective clinical study. From March 2012 to March 2018, 51 eyes of 51 patients diagnosed in Shenzhen Eye Hospital were included in the study. Among the patients, the tumor of 36 eyes were located in macular area, of 15 eyes were located outside macular area (near center or around optic disc). All patients underwent BCVA, color fundus photography, FFA, ocular B-scan ultrasonography and OCT examinations. The BCVA examination was performed using the international standard visual acuity chart, which was converted into logMAR visual acuity. OCT showed 48 eyes with macular serous retinal detachment. of 36 eyes with tumor located in macular area, the logMAR BCVA was 0.05±0.05, the tumor thickness was 4.5± 2.2 mm, the diameter of tumor was 9.7±3.6 mm. Of 15 eyes with tumor located outside macular area, the logMAR BCVA was 0.32±0.15, the tumor thickness was 3.8±1.4 mm, the diameter of tumor was 7.7± 1.9 mm. PDT was performed for all eyes with the irradiation time of 123 s. After 48 h, all patients received intravitreal injections of 0.5 mg ranibizumab (0.05 ml). At 1, 3 and 6 months after treatment, the same equipment and methods before treatment were used for related examination. BCVA, subretinal effusion (SRF), tumor leakage and size changes were observed. BCVA, tumor thickness and diameter before and after treatment were compared by t test. Results:At 6 months after treatment, the tumor was becoming smaller without scar formation. FFA showed that the blood vessels in the tumor were sparse compared with those before treatment, and the fluorescence leakage domain was reduced. OCT showed 43 eyes of macular serous detachment were treated after the combined treatment. The logMAR BCVA were 0.16±0.15 and 0.55±0.21 of the eyes with tumor located in or outside macular area, respectively. The difference of logMAR BCVA between before and after treatment was significant ( t=-2.511, -2.676; P=0.036, 0.040). Both the tumor thickness ( t=3.416, 3.055; P=0.011, 0.028) and diameter ( t=4.385, 4.171; P=0.002, 0.009) of CCH patients were significantly reduced compared with that before treatment. Conclusion:The tumor of CCH can be reduced by prolonged PDT irradiation time combined with intravitreal injection of ranibizumab.

With the population ageing, the number of elderly with noncommunicable diseases and functional disabilities is increasing. The assistive technology can improve the ability of older adults for daily living activities and reduce dependence on caregivers to facilitate home-based care for the elderly. However, the provision of assistive technology service in China is still in the early stage and lacks implementable model. This article introduces international experiences on the delivery of assistive technology service, and discusses the status quo and problems of assistive technology service in China, to provide insights for promoting assistive technology service in the primary health care.