• The white part of the eyeball is called the sclera (say: SKLAIR-uh). (kidshealth.org)
  • The sclera is made of a tough material and has the important job of covering most of the eyeball. (kidshealth.org)
  • The sclera gives the eyeball its white color. (medlineplus.gov)
  • The arteries of the uveal circulation, supplying the uvea and outer and middle layers of the retina, are branches of the ophthalmic artery and enter the eyeball without passing with the optic nerve. (wikipedia.org)
  • A thin, clear membrane that lines the inner surface of the eyelids and the outer surface of the eyeball, except for the cornea. (glaucoma.org)
  • The white outer layer of the eyeball is called the sclera. (northshore.org)
  • The posterior portion of the uvea is the choroid , which is sandwiched between the tough outer sclera of the eyeball and the retina in the back of the eye. (allaboutvision.com)
  • The tough outer coat that protects the entire eyeball. (brightfocus.org)
  • The outer layer of the eyeball made of fibrous connective tissue. (unboundmedicine.com)
  • It is ophthalmologically significant in that it appears on the outer surface of the eyeball as a slight furrow, marking the line between the clear cornea and the sclera. (bvsalud.org)
  • It contains connective tissues, and lies between the retina and the sclera. (wikipedia.org)
  • The choroid provides oxygen and nourishment to the outer layers of the retina. (wikipedia.org)
  • In all modalities, the cornea, anterior chamber, lens, vitreous humor, and retina were identified and had an appearance typical of the vertebrate eye, with the exception that the retina was located at approximately half of the anterior-posterior (A-P) depth of the globe and had a flatter contour than the posterior sclera (Figure 1). (vin.com)
  • Red asterisk=choroid, occupying the space posterior to the retina and anterior to the sclera. (vin.com)
  • The cornea, iris, lens, retractor lentis muscle, falciform process, retina, optic nerve, choroidal rete, and sclera (including scleral cartilage and ossicles) were identified and all had a gross appearance and histological architecture typical of the teleost eye (Figure 1). (vin.com)
  • Anatomically, the eye consists of three layers called the Tunica fibrosa (outer layer) , the Tunica vasculosa (mid layer), and the Tunica nervosa (retina) . (fountainmagazine.com)
  • Bioptigen's SDOCT systems enable researchers and clinicians to resolve the microstructure of the retina in finest detail, including the nerve fiber layer, inner and outer plexiforms, retinal pigment epithelium layers, Bruch's membrane, and vessels of the choriocapillaris. (medgadget.com)
  • Volume intensity projections generate en-face images (similar to the fundus images taken of the retina) that enable accurate cross-sectional image registration. (medgadget.com)
  • The retina is approximately 0.5 mm thick and has a diameter similar to that of the sclera, around 24 mm. (barraquer.com)
  • The highly vascular choroid, located between the retinal pigment epithelium and the sclera, supplies oxygen and nutrients to the outer retina and plays an essential role in vision-guided eye growth. (bmj.com)
  • Rugged and robust, the sclera works to protect the inner, more sensitive parts of the eye like the retina and choroid. (qldblind.org.au)
  • The choroid lies between the retina and the sclera, which provides blood supply to the eye. (md-health.com)
  • This is a thin and transparent membrane that covers both the sclera and the inside of the eyelids. (barraquer.com)
  • The lamina cribrosa are small openings within the sclera where the fibers forming the optic nerve travel through. (histology-world.com)
  • This structure is located in the cytoplasm of the choroidea layers in between the innermost light sensitive ocular layer and sclera, and it acts like a biological reflector. (fountainmagazine.com)
  • Oftalmológicamente, se manifiesta al aparecer en la superficie externa del globo ocular como un surco ligero, delimitando la línea entre la córnea transparente y la esclerótica. (bvsalud.org)
  • 2021. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/748617/all/sclera. (unboundmedicine.com)
  • Small openings around the outer edge of the iris. (glaucoma.org)
  • Are there beings or people among us whose sclera, pupils and iris are completely BLACK? (rense.com)
  • It surrounds the iris and cannot be seen because it's located behind the opaque sclera (white of the eye) . (allaboutvision.com)
  • The drainage angle is the point in the eye where the coloured part of the eye (iris) and the white covering over the eye (sclera) meet. (alberta.ca)
  • The episclera contains blood vessels that nourish the sclera with oxygen and nutrients. (qldblind.org.au)
  • This is where fluid within the inner eye (which is different from tears that lubricate the eye's outer surface) drains. (alberta.ca)
  • Globe rupture may occur when a blunt object impacts the orbit, compressing the globe along the anterior-posterior axis causing an elevation in intraocular pressure to a point that the sclera tears. (medscape.com)
  • The sclera is a fibrous connective tissue consisting of 90% collagen and a small percentage of proteoglycans and glycoproteins. (molvis.org)
  • In general, mRNA levels of ECM and collagen genes have been found to be downregulated in both the adult mouse sclera [ 6 ] and cornea [ 7 ] when compared with samples from an earlier developmental stage. (molvis.org)
  • 6 ], the transforming growth factor beta 1 ( Tgfβ1 ) gene and several collagen genes were significantly downregulated in 8-week-old B6 mice scleras when compared with 3-week-old B6 mice scleras. (molvis.org)
  • The rupture site most commonly is near the globe's equator posterior to the insertion of the rectus muscles, which is where the sclera is weakest and thinnest. (medscape.com)
  • The sclera is a very thin tissue made of several layers, with a total thickness varying between .3mm and 1mm thick depending on where on the eye it's measured. (rense.com)
  • The diameter of the sclera is typically around 24 mm, and its thickness can vary, being thinnest at the front and thickest at the back. (barraquer.com)
  • A tiny, very thin needle is used and is inserted through the sclera - the white part of your eye - typically in the lower, outer part. (texasretina.com)
  • The white part of a human eye is called the sclera, which comprises 5/6 of the outer surface of the eye. (rense.com)
  • The sclera is the white outer surface of the eye. (betterpet.com)
  • HN - 2008 MH - Superior Sagittal Sinus UI - D054063 MN - A07.231.908.224.667 MS - The long large endothelium-lined venous channel on the top outer surface of the brain. (bvsalud.org)
  • There are special drugs in the form of eye-drops which doctors and researchers use that temporarily cause the white sclera of the eye to become transparent. (rense.com)
  • There is no long- lasting effect from temporarily making the sclera transparent. (rense.com)
  • The bluish-black sclera in his eyes is a rare disease called alkaptonuria. (rense.com)
  • Regardless of race, most healthy humans have a white color (or nearly white) sclera. (rense.com)
  • Inspired by the monster from the popular game Dragon Quest VII, Cerabus contact lenses feature a striking design that stretches across your entire sclera for a look that brings the ultimate shock factor. (lens.com)
  • This unique and creepy design features pale yellow irises, with a burst of orange shooting out in a flame-like pattern around the outer edge, to create a shocking fiery look. (lens.com)
  • Green notes that one useful rule to keep in mind is that if the white portion of the eye (sclera) isn't red and there are no visual complaints like blurred or distorted vision, it's unlikely that the headache is related to an eye problem. (allaboutvision.com)
  • The vibrancy of these colors is intensified by a jet black background covering the sclera. (lens.com)
  • Other life-forms such as horses, dogs, lizards etc often have a dark brown or black sclera. (rense.com)
  • Globe rupture occurs when the integrity of the outer membranes of the eye is disrupted by blunt or penetrating trauma. (medscape.com)
  • Any full-thickness injury to the cornea, sclera, or both is considered an open globe injury and is approached in the same manner in the acute setting. (medscape.com)