This study evaluated age-related changes in the superficial and deep retinal capillary plexus (SCP and DCP, respectively) and in the foveal avascular zone (FAZ). SCP and DCP perfusion density (PD) were measured in optical coherence tomography angiography (OCTA) macular scans of 145 eyes of 145 healthy Japanese subjects, and findings were compared with SCP FAZ and clinical data. We found that age was negatively correlated with SCP and DCP PD (r = -0.17, P = 0.04 and r = -0.20, P = 0.02, respectively) and positively correlated with FAZ area (r = 0.18, P = 0.03). SCP and DCP PD were correlated with each other (r = 0.67, P < 0.001). FAZ area was negatively correlated with SCP PD, DCP PD and central macular thickness (CMT) (r = -0.18, P = 0.03; r = -0.25, P < 0.01; and r = -0.39, P < 0.001, respectively). FAZ was larger and CMT was lower (P = 0.01 and P < 0.001, respectively) in women than men. SCP and DCP PD were positively correlated with estimated glomerular filtration rate (r = 0.17, P = 0.03 and r = 0.24, P < 0.01, respectively). Multiple regression analysis confirmed that age independently affected DCP PD and FAZ (P = 0.02 and P < 0.01, respectively) and that CMT independently affected FAZ area (P < 0.001). Thus, normal subjects showed age-related decreases in macular PD and renal function. FAZ and CMT were related, suggesting that age-related changes in macular thickness also affect capillary vasculature.
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http://dx.doi.org/10.1038/s41598-019-45336-3 | DOI Listing |
Viruses
December 2024
Department of Infectious Diseases and Hepatology, Medical University of Białystok, 15-540 Białystok, Poland.
The SARS-CoV-2 infection manifests with diverse clinical manifestations, with severity potentially influenced by the viral variant. COVID-19 has also been shown to impact ocular microcirculation in some patients, but whether this effect varies by viral lineage remains unclear. This prospective study compared clinical features and ocular parameters assessed via optical coherence tomography angiography (OCTA) in patients recovering from SARS-CoV-2 infections during the dominance of two distinctive viral lineages, Alpha (B.
View Article and Find Full Text PDFInt J Ophthalmol
January 2025
Department of Ophthalmology, Kasr ElAini Hospital, Cairo University, Cairo 1141, Egypt.
Aim: To compare the macular and optic nerve perfusion and vascular architecture using optical coherence tomography angiography (OCTA) in normal eyes of Egyptian (Caucasians) and South Asian (Asians) volunteers.
Methods: Cross-sectional analytical OCTA study performed on 90 eyes of South Asian (=45) and Egyptians (=45) were analyzed. All participants underwent best-corrected visual acuity test, slit lamp, and fundus examination.
Photodiagnosis Photodyn Ther
January 2025
Department of Ophthalmology, Fuyang Hospital Affiliated to Bengbu Medical University(Fuyang People's Hospital), Fuyang, 236400, Anhui Province, China. Electronic address:
Purpose: To evaluate optic disc and macular microvasculature changes in children with anisometropic amblyopia before and after treatment.
Methods: In all, 60 children with unilateral anisometropic amblyopia between the ages of 6 and 12 were randomly selected from the ophthalmology clinic of Fuyang People's Hospital, while 60 children with non-amblyopia in the same age range were randomly selected as a normal control group. The right eye was uniformly taken in the control group with at least 6 months of follow-up.
Diagnostics (Basel)
January 2025
Department of Ophthalmology, Haseki Training and Research Hospital, 34096 Istanbul, Turkey.
: To evaluate the long-term effects of coronavirus disease (COVID-19) on optic disc and macular microvasculature. : 40 post-COVID-19 and 40 healthy subjects were included. Optical coherence tomography angiography (OCTA) was performed for all subjects at the first visit and repeated in the fourth and twelfth months.
View Article and Find Full Text PDFPhotodiagnosis Photodyn Ther
January 2025
Southwest Hospital/Southwest Eye Hospital, Army Medical University, Chongqing 400038, PR China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, PR China; Jinfeng Laboratory, Chongqing, PR China. Electronic address:
Purpose: Utilizing Swept source optical coherence tomography angiography (SS-OCTA) investigates the changes in the vascular characteristics of the choriocapillaris and larger vascular layers, including Sattler's and Haller's layers, in the macular region of young myopia patients, in order to Enhance our comprehension of the underlying mechanisms of the pathogenesis of myopia.
Methods: A retrospective analysis was performed on 103 young adults (154 eyes) that underwent SS-OCTA. Axial lengths (AL) were measured, 64 eyes with AL < 26.
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