sclerotic


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scle·rot·ic

(sklē-rot'ik),
1. Relating to or characterized by sclerosis.
2. Synonym(s): scleral

sclerotic

/scle·rot·ic/ (sklĕ-rot´ik)
1. hard or hardening; affected with sclerosis.
2. scleral.

sclerotic

(sklə-rŏt′ĭk)
adj.
1. Affected or marked by sclerosis.
2. Anatomy Of or relating to the sclera.
n.
See sclera.

sclerotic

[sklirot′ik]
Etymology: Gk, skleros, hard
pertaining to induration or hardening.

scle·rot·ic

(sklĕr-ot'ik)
1. Relating to or characterized by sclerosis.
2. Synonym(s): scleral.

sclerotic

1. The white outer coat (sclera) of the eye.
2. Pertaining to the SCLERA.

sclerotic

see SCLERA.

sclera 

The tough, white, opaque, fibrous outer tunic of the eyeball covering most of its surface (the cornea contributes 7% of, and completes, the outer tunic). Its anterior portion is visible and constitutes the 'white' of the eye. In childhood (or in pathological conditions) when the sclera is thin, it appears bluish, while in old age it may become yellowish, due to a deposition of fat. The sclera is thickest posteriorly (about 1 mm) and gradually becomes thinner towards the front of the eyeball. It is a sieve-like membrane at the lamina cribrosa. The sclera is pierced by three sets of apertures: (1) the posterior apertures round the optic nerve and through which pass the long and short posterior ciliary vessels and nerves; (2) the middle apertures, 4 mm behind the equator which give exit to the vortex veins; and (3) the anterior apertures through which pass the anterior ciliary vessels. The tendons of insertion of the extraocular muscles run into the sclera as parallel fibres and then spread out in a fan-shaped manner. The sclera is commonly considered to be divided into three layers from without inward: (1) the episclera, (2) the scleral stroma and (3) the suprachoroid (lamina fusca) which is interposed between choroid and sclera. Syn. sclerotic. Note: some authors consider the suprachoroid as belonging to the choroid. However, when choroid and sclera are separated part of the suprachoroid adheres to the choroid and part to the sclera. See cribriform plate; evisceration.
blue sclera A hereditary defect in which the sclera has a bluish appearance. The sclera is thinner than normal and is susceptible to rupture if the person engages in contact sports. It is often associated with fragility of the bones and deafness as part of a condition called osteogenesis imperfecta (fragilitas ossium, van der Hoeve's syndrome), with keratoconus or with acquired scleral thinning (e. g. necrotizing scleritis). Syn. blue sclerotic (Fig. S3). See Ehlers-Danlos syndrome; Marfan's syndrome.
Fig. S3 Blue scleraenlarge picture
Fig. S3 Blue sclera
References in periodicals archive ?
Comparative evaluation between tympanoplasty alone & tympanoplasty combined with cortical mastoidectomy in non-cholesteatomatous chronic suppurative otitis media in patients with sclerotic bone.
8) Sclerotic acetabular pagetic bone may be at risk for fracture with an under reaming technique.
Hematological conditions (sickle cell disease), malignancy (leukemia, myeloproliferative diseases, metastatic bone disease), chemical poisoning (fluoride, lead), and congenital diseases (osteopetrosis, pyknodysostosis) can cause sclerotic bone lesions.
Radiographically, these tumors present as a cystic lesion with increased radiolucency and a sclerotic rim.
b) Microscopically, it shows a well-defined tumor composed of two cell types with round stromal cells and surface cells arranged in papillary, sclerotic, solid, and hemorrhagic pattern.
After that, the outlook swiftly worsens, and by 2038 the study projects that the annual deficit will be a sclerotic 6.
The right eye opening at the anterolateral corner of the skull, surrounded by sclerotic plates, is comparatively well preserved, whereas the nasal opening and especially the foramen of the endolymphatic duct are hardly traceable.
Radiographs taken with the bird manually restrained showed limited swelling and moderate sclerotic reaction on the left side of the nasal bone, with loss of the characteristic radiolucency on the proximal third of the upper beak (Fig 2).
It has substantial oil reserves, a great agricultural and manufacturing base, and a large and intelligent population, but Nigeria also has a sclerotic government, which is deeply mired in endemic corruption.
But France's problems also stem from high government spending, a sclerotic labor market and sliding competitiveness among its companies.
The move was the latest twist in a long-running saga that has seen CEZ at loggerheads with the Albanian government since it bought, with World Bank backing, the distribution company for EUR102m in 2009 as a way to help improve the sclerotic power sector in the country.
The Mab/PF grafts were then injected into mice, directly into the chronically inflamed and sclerotic regions typical of the advanced stages of muscular dystrophy.