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Abstract Background To explore the predictive value of Ellipsoid Zone (EZ) -related angle parameters for the outcome of primary macular hole surgery. Methods This was a retrospective study. Patients diagnosed with large macular hole (MH) (minimum diameter > 500 μm) between 2018 and 2021 were enrolled. All patients underwent 25-gauge pars plana vitrectomy, internal limiting membrane (ILM) peeling and air tamponade. Spectral-domain OCT (SD-OCT) and best corrected visual acuity (BCVA) were measured in preoperative and 2-week post-operative. Classic and angle related parameters were measured via ImageJ. Angle regularity (AR) were defined as the standard deviation of the angle parameters in vertical and horizontal direction. Results Seventy-six eyes were included for analysis; 24 eyes showed an unclosed macular hole at the 2-week postoperative and 52 eyes showed a closed hole. Preoperatively, MLD (P

With the development of new power systems, the construction concept imposes new requirements on the internal environment of the equipment in terms of moisture protection. The study addresses the requirements of dehumidification and temperature control in the internal environment of prefabricated substations and builds the test platform for prefabricated substations to investigate the effect of coordinated operation of distributed thermoelectric dehumidifier (DTD) and centralized thermoelectric dehumidifier (CTD) on the prefabricated bay environment. It is found that: distributed dehumidifiers are effective in dehumidifying environments with humidification rates less than 2.848 ml/min; CTD should be used when the humidification rate is greater than 2.848 ml/min. DTD its relative humidity regulation can be strong but cause the ambient temperature to rise, CTD power consumption is low and the ambient temperature change is small. When the coordinated operation of the distributed and centralized dehumidifier is used to reduce the relative humidity from 95% to 69.5%, its total power consumption is only 0.260 kWh and the ambient temperature increases by 3.2 °C. Therefore, the comprehensive performance advantage is obvious, which is conducive to improving the ability to resist sudden changes in the environment and ensuring stable equipment operation.