microaneurysm


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microaneurysm

[¦mī·krō′an·yə‚riz·əm]
(medicine)
Dilation of the wall of a capillary, characteristic of certain disease entities.
References in periodicals archive ?
Du, "Automatic microaneurysms detection based on multifeature fusion dictionary learning," Computational and Mathematical Methods in Medicine, vol.
In children, although it is common to demonstrate ophthalmoscopic findings such as isolated retinal microaneurysms or small unilateral hemorrhages (all of which are signs of nonproliferative diabetic retinopathy (NPDR)), it is extremely rare to find preproliferative retinopathy, proliferative retinopathy, or macular edema, regardless of the degree of metabolic control or the time of evolution of diabetes [4], with a clear tendency in our days to the decrease in the detection of retinopathy [4, 9, 10].
The primary outcome was efficacy and secondary outcomes were microaneurysms, hemorrhage, exudate, vision, and FFA.
At baseline, the NORDIC Fundus Photography Reading Center of the University of Rochester (Rochester, NY) graded 30.0% of patients as having retinal hypopigmentation in [greater than or equal to] 1 field, unrelated to geographic atrophy, 47.4% as having drusen, and 6.5% as having retinal hemorrhage or microaneurysm. No photographs contained hard exudates, retinal edema, or whitening.
Meanwhile, the hypertension also induces the arteriolosclerosis and fibrinoid necrosis of the wall, and even causes the microaneurysm, which is easily ruptured.
The pathogenesis is not understood completely, but intraretinal fluid develops secondary to microaneurysm formation, increased vascular permeability, and breakdown of the blood-retinal barrier [5,16] (Figure 3).
In diabetic retinopathy, the blood vessels in the retina are only very mildly affected, they may bulge slightly (microaneurysm) and may leak blood (haemorrhages) or fluid (exudates).
Early retinopathy, defined as one microaneurysm or hemorrhage on seven-field stereoscopic fundus photography, was detected in 9% of the patients.
Early retinopathy, defined as one microaneurysm or hemorrhage on sevenfield stereoscopic fundus photography, was detected in 9% of the patients.
The occurrence and significance of intracerebral microaneurysm. J Pathol Bacteriol 1967;93: 393-411.
The fundus retinal images are directly captured from human eye that includes some other landmarks like microcirculation system of the retina, macula, optic disc, fovea, microaneurysm, and exudates [4].