Long-term effect of orthokeratology on choroidal thickness and choroidal contour in myopic children.

PURPOSE: To investigate the long-term effect of orthokeratology (ortho-k) on the choroidal thickness and choroidal contour in myopic children. METHODS: Subjects were from a conducted 2-year randomised clinical trial. Children (n=80) aged 8-12 years with spherical equivalent refraction of -1.00 to -6.00D were randomly assigned to the control group (n=40) and ortho-k group (n=40). Optical coherence tomography images were collected at the baseline, 1-month, 6-month, 12-month, 18-month and 24-month visits, then the choroidal thickness and choroid contour were calculated. Axial length (AL) and other ocular biometrics were also measured. RESULTS: During 2 years, in the control group, the choroidal thickness became thinning and the choroidal contour became prolate with time at all visits (all p<0.001). Ortho-k can improve the choroidal thickness (all p<0.001) and maintain the choroidal contour at all visits (all p<0.05). In the ortho-k group, the choroidal contour was less changed in the temporal than nasal (p=0.008), and the choroidal thickness was more thickening in the temporal 3 mm (p<0.001). Two-year change in choroidal thickness was significantly associated with the 2-year AL change in the control group (r=-0.52, p<0.001), however, this trend was broken by ortho-k (r=-0.05, p=0.342). After being adjusted by other variables in the multivariable regression model, the effect of ortho-k on choroidal thickness was stable. CONCLUSIONS: In the current 2-year prospective study, ortho-k can improve the choroidal thickness and maintain the choroidal contour, but this effect diminished in a long term. Further study with larger sample size and longer follow-up is warranted to refine this issue.

Green technologies, government stability, and green energy transition in a globalized world: evidence from E-7 nations.

Unsustainable development and rising environmental degradation are major challenges for emerging nations that tend to promote human welfare by expanding economic development. Green energy transition (GETR) can help these nations to continue their development, reduce fossil fuel utilization, and achieve environmental sustainability. However, previous literature overlooks the importance of green technologies, government stability, and economic globalization in the GETR process. Accordingly, this research takes a step forward and assesses the impacts of green technologies (GT), government stability (GOV), and economic globalization (EGL) on green energy transition including population density (POP) and economic growth (GDP) in emerging seven (E-7) countries from 1992 to 2020. The research applied the "continuously updated fully modified (CuP-FM)" methodology to acquire the long-run findings robust to endogeneity stationary regressors, autocorrelation, and cross-sectional dependence (CD). The results highlighted that green technologies can be enhanced to accelerate the energy transition process since GETR and green technologies are positively connected. Also, government stability and economic globalization support the green energy transition. However, both population density and economic growth obstruct the energy transition process. The Emirmahmutoglu and Kose test unveiled that green technologies, economic globalization, and government stability Granger cause the green energy transition. Based on these findings, policies are directed to promote the GETR by enhancing green technologies, economic globalization, and government stability for achieving ecological sustainability.

The construction of green finance and high-quality economic development under China's SDGs target.

The study of top economic growth with the goal of Sustainable Development Goals (SDGs) has become an important issue in the world, and scholars have analyzed high-quality economic development(HED) influencing factors from many perspectives, but there are few studies on green finance(GF) and high-quality economic development(HED). we examine the logical link between green financing and high-quality economic development, as well as the transmission mechanism behind this relationship. Using data from 30 Chinese regions from 2011 to 2021, our empirical study shows that green financing may improve high-quality economic development. Several robustness tests show that this association exists. Furthermore, our findings indicate that more robust government governance and market synergy may promote green finance for high-quality economic development. Green finance can enhance high-quality economic development by minimizing resource mismatch and encouraging green technology advancement. Simultaneously, green finance for high-quality economic development is significantly heterogeneous. Green credit and green insurance are important forms of support for promoting high-quality economic development, with significantly higher impacts in the eastern regions than in the central and western regions. Our research offers policymakers insights on encouraging green finance growth in China.