Pars plana vitrectomy combined with air tamponade can yield satisfactory morphological and functional outcomes in the treatment of idiopathic macular holes of different diameters. For some large idiopathic macular holes that do not close after primary surgery, an additional air injection can support closure and achieve a similar prognosis.

The introduction of hybrid energy storage can improve the tie line power of the micro grid. This paper proposes a capacity optimization method of hybrid energy storage system in order to optimize the micro grid tie line power. Firstly, the capacity optimization method for hybrid energy storage is modelled, and the net present value is chosen as the objective function. Then, the problem of hybrid energy storage power allocation is transformed into the problem of determining the frequency of the optimal boundary between different compensation frequency bands, and the genetic algorithm is used to solve this model, after which the optimal capacity of hybrid energy storage is calculated. Finally, a case of a micro grid system in Tianjin eco city shows the effectiveness of the method.

BackgroundThis study aimed to summarize the features of perforating scleral vessels (PSVs) in patients with myopic choroidal neovascularization (CNV) (mCNV) using optical coherence tomography angiography (OCTA) and to identify the associations with the response after intravitreal anti-vascular endothelial growth factor (anti-VEGF) therapy.MethodsA consecutive series of naïve patients who had mCNV and received intravitreal anti-VEGF therapy with a follow-up duration of 12 months or more were enrolled. The prevalence, location, and branches of PSVs were analyzed. Projection-resolved OCTA (PR-OCTA) was used to analyze the neovascular signals between CNV and PSVs. Best corrected visual acuity (BCVA) and central macular thickness (CMT) were measured. The proportion of CMT change relative to baseline was used to assess therapeutic response.ResultsA total of 44 eyes from 42 patients with mCNV were enrolled. PSVs were identified in 41 out of 44 eyes. Branches were identified in the PSVs of 24 eyes (57.14%), and 20 eyes did not have PSV branches (47.62%). In eight eyes (18.18%), PSVs were adjacent to mCNV, and in 36 eyes (81.82%), PSVs were not adjacent to mCNV. After anti-VEGF therapy for mCNV, BCVA increased (F = 6.119, p < 0.001) and CMT decreased (F = 7.664, p < 0.001). In the eyes where PSVs were adjacent to mCNV, BCVA improvements (F = 7.649, p = 0.009) were poor, and changes in CMT were small.ConclusionThe eyes with PSVs adjacent to mCNV showed poor therapeutic responses after intravitreal anti-VEGF therapy.