Globe of the eye: the one on the left is perfect, but that on the right has the sclerotic and choroid coats removed, to show the retina.
The bevelled junction of the cornea and sclerotic coats.
The cornea (This connects with thesclerotic coat by a bevelled edge.
Anteriorly, the sclerotic coat presents a bevelled edge, which receives the cornea in the same way that a watch-glass is received by the groove in its case.
The sclerotic coat not only gives form to the body of the eye, but protection to the interior and more delicate parts.
Defn: The optic capsule; the scleroticcoat of the eye.
The sclerotic is lined with a highly pigmented membrane, the choroid, and this is turn is lined in the back half of the eyeball with the nearly transparent retina, in which the fibers of the optic nerve ramify.
By some writers a distinction is made, sclerotic parenchyma being applied to tissue composed of cells with the walls hardened but not thickened, and sclerenchyma to tissue composed of cells with the walls both hardened and thickened.
Defn: Of or pertaining to the sclerotic coat of the eye; sclerotical.
The outer membrane is converted into the white protective or sclerotic coat--in front, the transparent cornea.
The outermost and thickest of these envelopes is the white sclerotic coat of the eye.
The outer ends of these fibers are attached to the sclerotic coat, which is unyielding; hence, when they contract, the pupil enlarges to receive more light.
It may be viewed as a part of the sclerotic specially modified to permit the passage of light into the interior of the eye.
The sclerotic is the white, opaque part of the outer tunic, of which it forms about the posterior five-sixths, being coextensive with the larger sphere already mentioned.
It does not line the cornea, but terminates behind the line of junction of that coat with the sclerotic by a thickened edge--the ciliary processes.
The retractor oculi envelops the optic nerve between the brain and the ball of the eye and becomes attached upon the external face of the sclerotic tunic.
The venous canal of Schlemm runs circularly around the eyeball at the line of junction of the sclerotic and cornea.
The sclerotic is a strong, opaque, fibrous membrane, which, in a great measure, maintains the form of the eyeball and protects the more delicate structures within it.
The circumferential border is attached within the junction of the sclerotic cornea.
This is an inflammation of the cornea proper, although the sclerotic at the corneal border becomes involved to some extent.
In front of the eye, the white sclerotic passes into the transparent cornea (c.
In infectious diseases, especially septic, widespread sclerotic changes occurred in the aorta.
The fact that the vessels in the splanchnic area are frequently attacked by sclerotic changes means, as a rule, increase of work for the heart.
Without existing arteriosclerosis the peripheral veins may be sclerotic usually in conditions of debility, but not infrequently in young persons.
The initial lesion is in the media but the resulting sclerotic changes depend upon the kind of vessel, the strength of the coats, the pressure in the vessel, and other causes.
Aneurysms, single or multiple, have been found in the arteries of children, and even the pulmonary artery may show sclerotic changes.
One gets the impression that the smallsclerotic lesions are the result of anemia and gradual replacement of scattered glomeruli by fibrous tissue.
The sclerotic process in the arteries is due to the lack of thyroid as in cases of myxedema.
It is convex anteriorly and projects forward from the sclerotic in the same manner that a watch glass does from its case.
The sclerotic (means dense and hard) serves to maintain the form of the globe, the eyeball.
In the arterio-sclerotic variety the urine may be normal or diminished in quantity, specific gravity normal or increased, the casts are more numerous, and the albumin is usually more abundant.
Upon the sclerotic it is loosely attached to the globe.
The outmost line ALLB represents the sclerotic coat, and the part ACB the transparent cornea.
The next coat is the cornea, so called from its resemblance to transparent horn; it arises where the sclerotic coat ends, and forms the fore part of the eye.
Of or pertaining to the sclerotic coat of the eye; sclerotical.
In bad cases the scissors must be carried up and down as far as the contiguous straight muscles, so as to denude completely the sclerotic coat for more than one-third of its circumference.
The proper point is the lower and outer part of the cornea, about a line anterior to its junction with the sclerotic coat.
The cornea, and the sclerotic immediately surrounding it, frequently appear to be almost entirely covered with meshes of their dilated capillaries.
The base of the pterygium is always on the circumference of the eye, generally at the inner corner, and its apex is seldom, if ever, situated beyond the centre of the cornea: frequently the sclerotic conjunctiva alone is affected.
The thinning of the sclerotic at these points allows the dark hue of the choroid to shine through, and this, together with the bunched-like appearance of the protruded portions, has entailed upon it the name of Staphyloma Racemosum.
By long-continued chronic inflammation the scleroticcoat appears to lose its powers of resistance—the accumulating fluid pushes before it the weakened tunic, and Staphyloma Scleroticæ is produced.
The same remark is applicable to the wounding of the sclerotic coat, and the escape of the humours of the organ; an accident which has happened several times in the hands of ignorant bunglers.
Sometimes four or even five of such divisions are called for, while care is taken not to wound the scleroticcoat beneath.
The points of the hook should be fairly implanted into the substance of the sclerotic tunic, but no more.
Auricular fibrillation may occur in hearts which are suffering from valvular lesions, especially mitral stenosis, and may occur in syphilitic hearts, in various sclerotic conditions of the heart, and in hyperthyroidism.
If the foregoing management does not reduce hypertension, the kidneys are generally beginning to become involved in the sclerotic degeneration, whether the urine shows such a condition or not.
The surgeon then enters the needle close to the sclerotic margin of the cornea, carries it fairly on in the anterior chamber, till the centre of the pupil is reached.
In most cases it will be found sufficient merely to raise the lax portion over the sclerotic with forceps, and divide it freely, removing a transverse portion.
Then with successive snips of the scissors he divides the tendon on the hook, close to its sclerotic margin.
To remove the included elliptical portion, Mr. Critchett pierces the sclerotic with a Beer's knife, just in front of the tendinous insertion of the external rectus.
The point of the knife must then be introduced about a line from the outer sclerotic margin of the transverse diameter of the cornea (Fig.
Insert the blade of a pair of sharp scissors at the junction of the sclerotic rotic coat with the cornea and cut from this point nearly around the entire circumference of the eyeball, passing near the optic nerve.
The choroid coat lies immediately beneath the sclerotic coat at all places except a small margin toward the front of the eyeball.
The sclerotic coat covers the greater portion of the larger spherical segment and is recognized in front as "the white of the eye.
Near where the sclerotic coat joins the cornea, the choroid coat separates from the outer wall and, by folding, forms many slight projections into the interior space.
Between the ciliary processes and the sclerotic coat is a small muscle, containing both circular and longitudinal fibers, called the ciliary muscle.
The cornea forms the transparent covering over the lesser spherical segment of the eyeball, shading into the sclerotic coat at its edges.
The Outer Coat* surrounds the entire globe of the eye and consists of two parts—the scleroticcoat and the cornea.
The nasal capsules are always cartilaginous, and the eye, as a general rule, has a cartilaginous sclerotic investment.
There is generally a ring of bones in the sclerotic coat of the eye.
The eye is frequently enclosed in a cartilaginous sclerotic capsule, and in this a number of scale-like bones are often developed.
The sclerotic capsules of the eyes greatly modify the cranium, although they never become completely united with it.
The orbits are enormous, and there is a ring of bones in the sclerotic (fig.
The sclerotic coat of the eye is the continuation of the brain's dura mater.
The limbs or members of the eye are repeated in the ocular muscles and the sclerotic or bony ring; in many Fishes the eye stands upon a flexible pedicle, as in the Crabs.
The sclerotic corresponds to the corium, the cornea to the digital unguis, or finger-nail.
The sense of sight, its bones in a ring surrounding the sclerotic coat and in the eyelids, its muscles in the ocular muscles.
It affords protection to the extremely delicate interior parts of the eye; and the little muscles which effect its movements are inserted into the sclerotic a short distance behind the cornea (see Fig.
Under the sclerotic coat, in front, the eye bulges outward a little.
An outer tough white coat, of connective tissue, is called the sclerotic coat.
Sclerotic acid is sold in commerce, and has been employed subcutaneously in midwifery practice in Russia and Germany for some time.
From the experiments of Nikitin, it is probable that the least fatal dose of sclerotic acid for an adult man is 20 mgrms.
Sclerotic acid forms with lime a compound that is not decomposed by carbonic acid, and which upon combustion leaves from 19 to 20 per cent.
The terminations of the sensory nerves are paralysed by the direct action of sclerotic acid, but they remain intact with general poisoning.
The cause of death from sclerotic acid seems to be paralysis of the respiration.
Cold-blooded animals are very sensitive to sclerotic acid; of the warm-blooded the carnivorae are more sensitive than the herbivorae.
The rings of the windpipe may be seen in situ, the sclerotic plates of the eye, and the sheaths of the claws.
Some forms of sea-serpent had sclerotic plates in the eye, such as we found in the fish-lizard, or Ichthyosaurus (p.
I once purposely stepped backward to the horse's flank, so that he had to turn his eye far back and thus the outer border of the iris and the white sclerotic coat became visible and all doubt concerning the line of vision was removed.
This imperfection consists in an irregular formation of the sclerotic coat and of the lens of the eye.
The filtered liquid is now mixed with absolute alcohol, whereby sclerotic acid is precipitated in conjunction with certain bases and other substances.
The greater part of these admixtures may be removed, and the sclerotic acid obtained free, by adding before the final precipitation with absolute alcohol a considerable quantity of hydrochloric acid (for every 100 c.
On the internal surface of the sclerotic is a vascular membrane called the choroid.
The scleroticis a tough fibrous coat, and is the part to which the phrase 'white of the eye' is applied.
About the place where the sclerotic passes into the cornea the choroid becomes continuous with the iris, a round curtain, the structure seen through the cornea, differently coloured in different individuals.
In the front of the globe the sclerotic is abruptly transformed into the transparent portion (the cornea), which is circular, and which forms a window through which one can see into the interior.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sclerotic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
