What are tortuous eye vessels?

Tortuous retinal arteries and veins are associated with hypertension, diabetes and genetic disorders [8, 20, 22, 78, 79, 80, 81]. Tortuous conjunctival arteries and veins are also reported in patients with diabetic retinopathy [8, 82, 83, 84] and hypertension [84, 85].

What are the abnormal findings in the retinal vessels?

Observable changes in retinal vascular architecture, such as increased retinal vein caliber (decreased artery-to-vein ratio), retinal vascular tortuosity, increased prominence of the retinal arterial reflex, venous nicking, “copper” or “silver wire” appearance as well as the discovery of cholesterol, calcium or …

What causes attenuated retinal vessels?

Retinal vessel attenuation is recognized as an almost universal finding in eyes with RP, 1 and is mainly thought to reflect decreased metabolic demand of the degenerating retina, 2 where loss of oxygen consumption leads to increased local oxygen levels in the inner retina that in turn results in vasoconstriction.

What causes vessel tortuosity?

Buckling stimulates wall remodeling and the interaction between artery dynamics, buckling and wall remodeling leads to further development of vessel tortuosity. Tortuosity may be caused by multiple factors: genetic factors, degenerative vascular diseases and an alteration in blood flow and pressure.

What does a damaged retina look like?

If the damage is near the macula, one could notice various visual effects such as general poor vision, distortion of images such as straight lines appearing wavy, blurry spots in one’s central vision, and/or vision with images appearing and disappearing. Typical symptoms of a damaged retina include: Dim central vision.

How do you identify retinal veins and arteries?

There are mainly four different characteristics that have been used in the literature to distinguish between retinal arteries and veins: (I)arteries differ in color from veins; (II) arteries are thinner than adjacent veins; (III) the central reflex is wider in arteries than in comparably sized veins, and (IV) arteries …

How is arterial tortuosity diagnosed?

Molecular genetic testing confirms or excludes a diagnosis of ATS. Molecular genetic testing can detect mutations in the SLC2A10 gene known to cause the disorder but is available only as a diagnostic service at specialized laboratories.

What does high tortuosity mean?

Higher tortuosity or curviness retards mass transfer as it acts obstructively on the drug particles within the formulation.

What is the significance of tortuosity of retinal vessels?

Tortuosity of retinal vessels has been suggested as an indicator of arterial hypertension, retinopathy, cerebral vessel disease, stroke and ischemic heart disease [49, 51, 86, 87, 88]. Tortuosity of Capillaries

What are some common vessel tortuosities and their associated diseases?

Below is a summary of some commonly seen vessel tortuosities and their associated diseases. Carotid Artery Tortuosity Clinical studies have shown that internal carotid artery tortuosity may lead to symptoms including dizziness, vertigo, syncopes, blackout or persistent tinnitus (ringing in the ears) [61].

What causes tortuosity of the conjunctival artery?

Tortuous conjunctival arteries and veins are also reported in patients with diabetic retinopathy [8, 82, 83, 84] and hypertension [84, 85]. Tortuosity of retinal vessels has been suggested as an indicator of arterial hypertension, retinopathy, cerebral vessel disease, stroke and ischemic heart disease [49, 51, 86, 87, 88].

What is the pathophysiology of a tortuous artery?

Tortuosity is a common anomaly in arteries and veins associated with various vascular diseases and aging. The mechanisms underlying the initiation and development of tortuous arteries remain unclear.