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Can perifoveal pseudocyst area be a prognostic factor in macular hole surgery? a prospective study with quantitative data

Abstract: To evaluate the effect of perifoveal pseudocysts on the anatomical outcomes of the idiopathic macular hole surgery as a prognostic factor. Twenty-one eyes of 20 consecutive patients with a Gass stage 3 or 4 idiopathic macular hole were enrolled in this prospective study between March 2012 and May 2013. Demographic data, medical history, and ocular examinations were recorded preoperatively and on postoperative day 1, week 1, and month 1, 3, and 6. Five spectral domain optical coherence tomography (SD-OCT) parameters were analyzed: macular hole (MH) basal diameter, MH minimum diameter, MH height, macular hole index, and a new parameter, the area of ​​macular pseudocysts via the software of SD-OCT device at the widest cross section of the MH formation. The mean preoperative best-corrected visual acuity was 0.86 0.29 logarithm of the minimum angle of resolution (LogMAR) (between 0.4 and 1.3) and improved to 0.64 0.28 LogMAR (between 0.22 and 1.23) postoperatively (P¼0.004). there w

Continue ReadingCan perifoveal pseudocyst area be a prognostic factor in macular hole surgery? a prospective study with quantitative data

Normative data assessment of peripapillary and macular vessel density and foveal avascular zone metrics using optical coherence tomography angiography in children.

Purpose: To quantify the vessel density (VD) of the macula and optic disc and foveal avascular zone (FAZ) in healthy children and to evaluate the effects of age, gender, axial length (AL), body mass index (BMI), and refractive errors on VD and FAZ. Methods: This study enrolled 92 eyes of 92 participants (42 boys and 50 girls).

Continue ReadingNormative data assessment of peripapillary and macular vessel density and foveal avascular zone metrics using optical coherence tomography angiography in children.

The impact of coronavirus disease 2019 (covid-19) on retinal microcirculation in human subjects.

Background: The aim of the study was to assess retinal microcirculation in patients with coronavirus disease 2019 (COVID-19) through the use of optical coherence tomography angiography (OCT-A) and compare the results with those obtained in healthy controls. Methods: The study enrolled 39 patients who had fully recovered from COVID-19 and 40 healthy controls. OCT-A image acquisitions were obtained using AngioVue software (version 2017.1.0.151) and the RTVue XR Avanti imaging system (Optovue Inc., Fremont, CA, USA). Nonflow area in the superficial capillary plexus (SCP), foveal avascular zone (FAZ) area in the whole retinal vasculature, FAZ perimeter, acircularity index of FAZ, and foveal density were automatically obtained with the FAZ assessment tool. Vessel density (VD) at the SCP and deep capillary plexus were also measured. Results: Compared to the control group, the nonflow area and the FAZ area in the whole retina was greater in the COVID-19 group; however no statistically signifi

Continue ReadingThe impact of coronavirus disease 2019 (covid-19) on retinal microcirculation in human subjects.