Grid-based analysis of three-dimensional choroidal Sattler's and Haller's layer vascularity volume index and its relation to age and axial length in adults by ultra-widefield swept-source optical coherence tomography angiography.

Background: This study was to evaluate the features of choroidal Sattler's and Haller's layer (CSHL) vessels in adults and explore its relationship with factors such as age, axial length (AL) and body mass index (BMI) by using ultra-widefield swept-source optical coherence tomography angiography (ultra-widefield SS-OCTA).

Methods: 24mm × 20mm fovea centered rectangular SS-OCTA scans were acquired. They were divided into 9 identical grids, with each equal size of 8 mm × 6.

Preparation of lightweight daisy-like magnetic molecularly imprinted polymers via etching synergized template immobilization for enhanced rapid detection of trace 17β-estradiol.

17β-estradiol (E2), as one of the pharmaceutical and personal care product, frequently contaminates environmental water as estrogen pollutant and possesses great risk to human survival as well as the sustainable development of the ecosystem. Herein, to achieve an effective adsorbent system for the selective removal of E2 from the environmental water, FeO nanoparticles are subjected to chemical etching to reduce the overall mass and then employed as carriers to prepare a novel type of lightweight daisy-like magnetic molecularly imprinted polymers (LD-MMIPs) adopting template immobilization strategy. The LD-MMIPs based etched magnetic nanoparticles not only exhibit light mass but also have plentiful imprinted sites in the etched channels, which significantly increases the adsorption capacity for E2.