Optic nerve head alterations after COVID-19: an optical coherence tomography angiography-based longitudinal study.

Objective: To evaluate longitudinal changes in peripapillary vessel density (VD) following coronavirus disease 2019 (COVID-19) using optical coherence tomography angiography.

Methods: As part of a prospective longitudinal observational study, we studied healthy individuals with a history of mild COVID-19 confirmed via real-time polymerase chain reaction. After recovery, we used the Optovue RTVue XR Avanti machine to perform optic nerve head (ONH) imaging.

Longitudinal Alterations of Retinal and Choroidal Structure in Patients Recovered from COVID-19.

Objective: To evaluate the midterm longitudinal changes in chorioretinal structures in patients with coronavirus disease 2019 (COVID-19).

Methods: Thirty-four eyes of 17 COVID-19 patients were enrolled. The patients underwent retinal and choroidal imaging upon the recovery (baseline) after 1 and 3 months.

Peripapillary Nerve Fiber Layer Thickness and Optic Nerve Head Parameters in Patients Recovered from COVID-19: A Longitudinal Study.

Purpose: To quantify the longitudinal changes of the optic nerve head (ONH) parameters and peripapillary retinal nerve fiber layer (pRNFL) thickness in patients recovered from coronavirus disease 2019 (COVID-19) using spectral-domain optical coherence tomography (OCT) analysis.

Materials And Methods: In an observational longitudinal study, in patients recovered from COVID-19, ONH OCT images were recorded at least two weeks after recovery from the systemic disease as the baseline and after one and three-month follow-up. Ganglion cell complex (GCC) analysis, ONH parameters, and pRNFL thickness changes were measured.

Seasonal trend and source identification of polycyclic aromatic hydrocarbons associated with fine particulate matters (PM) in Isfahan City, Iran, using diagnostic ratio and PMF model.

Particulate matters (PMs) and their associated chemical compounds such as polycyclic aromatic hydrocarbons (PAHs) are important factors to evaluate air pollution and its health impacts particularly in developing countries. Source identification of these compounds can be used for air quality management. The aim of this study was to identify the sources of PM-bound PAHs in Isfahan city, a metropolitan and industrialized area in central Iran.

Heavy metals and their source identification in particulate matter (PM) in Isfahan City, Iran.

The presence of heavy metals (HMs) in particulate matters (PMs) particularly fine particles such as PM poses potential risk to the health of human being. The purpose of this study was to analyze the contents of HMs in PM in the atmospheric monitoring stations in Isfahan city, Iran, in different seasons between March 2014 and March 2015 and their source identification using principle component analysis (PCA). The samples of PM were taken using a high volume sampler in 7 monitoring stations located throughout the city and industrial zones since March 2014 to March 2015.

Photocatalytic removal of SO using natural zeolite modified by TiO and polyoxypropylene surfactant.

Air pollution due to emission of various hazardous gases such as SO into the atmosphere and its control is an important environmental issue. Application of photocatalysts is considered as a suitable process to control the gaseous pollutants. In this study, the efficiency of clinoptilolite as a natural zeolite (Ze) modified by TiO (Ze-Ti) and a polymeric surfactant polyoxypropylene (Ze-Ti-POP) for removal of SO was investigated.