Veins & arteriesInsectsResearchersMammalsButterflies & mothsLasers[...]in collaboration with Naomi Pierce, a butterfly specialist at Harvard University, he has now shown, in a paper published this week in Nature Communications, that butterfly wings are, indeed, very much alive. In their ...
arteria ciliaris, ciliary artery - one of several arteries supplying the choroid coat of the eye arteria lacrimalis, lacrimal artery - an artery that originates from the ophthalmic artery and supplies the lacrimal gland and rectal eye muscles and the upper eyelid and the forehead ...
Arteries, veins, and the optic nerve interface with the eye through the optic disc, which has no photoreceptors. As such, it's the location of our so-called visual "blind spot." Photoreceptor cell density map Cones (shown in color) increase in density near the center of vision while rods...
The primary blood supply to the eye is the ophthalmic artery, a branch of the internal carotid artery. The ophthalmic artery gives rise to the ciliary arteries and the central retinal artery. The posterior ciliary arteries supply the choroid. Oxygen-rich blood is able to diffuse from the smalle...
In three cases sodium fluorescein was injected into the rat circulation and was subsequently noted to fill the major retinal arteries and veins in two of these animals, the third angiogram was not technically satisfactory for interpretation.19 Sher20 was the first to successfully demonstrate ...
Ophthalmoscope- a device used to illuminate the inside of the eye and enlarge the image for examining the retina, optic nerve entrance, arteries, and veins. Optic Nerve- is a bundle of nerve fiber that connects each eye to the brain and transmits images from the retina to the brain. ...
The retinal vasculature is relatively sparse in order to minimise optical interference in the light path. This results in a large oxygen tension difference between retinal arteries and veins which can easily be compromised if damage occurs to the vascular bed. Capillary nonperfusion, loss of retinal...
With an ophthalmoscope, doctors shine light into the eye to examine the cornea, lens, vitreous humor (the jellylike substance that fills the back of the eye), retina, optic nerve, and the retinal veins and arteries (see Structure and Function of the Eyes). The person looks straight ahead ...
Arteries, veins, and the optic nerve interface with the eye through the optic disc, which has no photoreceptors. As such, it’s the location of our so-called visual “blind spot.” Photoreceptor cell density map Cones (shown in color) increase in density near the center of vision while ro...
Uveitis is inflammation to the middle layers of the eye (the uvea). The uvea is the layer of the eye that contains the arteries and veins that feed the important structures used in vision. Causes of uveitis include trauma or injury to the eye, infections, or rheumatologic or inflammatory di...