A blind spot, scotoma, is an obscuration of the visual field. A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes through the optic disc. Because there are no cells to detect light on the optic disc, the corresponding part of the field of vision is invisible. Processes in the b… The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye. Because there are no rods or cones overlying the optic disc, it corresponds to a small blind spot in each eye. The ganglion cell axons form the optic nerve after they leave the eye. The optic disc represents the beginning of the … Zobacz więcej The optic disc is placed 3 to 4 mm to the nasal side of the fovea. It is a vertical oval, with average dimensions of 1.76mm horizontally by 1.92mm vertically. There is a central depression, of variable size, called the Zobacz więcej • Megalopapilla: a non-progressive condition in which the optic disc is enlarged (diameter exceeding 2.1 mm) with no other … Zobacz więcej • Blood flow in the optic disc revealed by holographic laser Doppler imaging. • Local direction of blood flow with respect to the optical axis revealed by the Doppler spectrum asymmetry in out-of-plane retinal vessels by holographic laser Doppler imaging Zobacz więcej The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye. Because there are no rods or cones overlying the … Zobacz więcej The eye is unique because of the transparency of its optical media. Almost all eye structures can be examined with appropriate optical equipment and lenses. Using a modern direct ophthalmoscope gives a view of the optic disc using the principle of … Zobacz więcej • Optic disc pallor Zobacz więcej • Diagram at Moorfields Eye Hospital • Diagram at Ballard Optical • Retinal Vein Pulsation Is in Phase with Intracranial Pressure and Not Intraocular Pressure Zobacz więcej

The blind spot syndrome: does it exist? - PubMed

Witrynablind spot: [noun] the small circular area at the back of the retina where the optic … WitrynaWhat is the blind spot and why does it exist? The optic disc is called the blind spot … the ozark general store smithville ar

What to Know About Blind Spots (Scotoma) - WebMD

Witryna15 maj 2024 · The blind spot (BS) 1,2,3,4 corresponds to the optic disk on the retina, where blood vessels and ganglion-cell axons converge to form the optic nerve, which leads away from the eyeball to the ... WitrynaTest yourself to see if you are blind. Be ready to pause the video if needed and watch … Witrynaelevation of the optic disc Paton's lines (radial retinal lines cascading from the optic disc) On visual field examination, the physician may elicit an enlarged blind spot; the visual acuity may remain relatively intact … shutdown netapp ontap 9