And again, when we wish to see a blue or violet thing distinctly, the ciliary muscle must be relaxed and the convexity of the lens as far as possible diminished, just as if the gaze were directed to the horizon.
The characteristic feature of this group of bivalves is the filamentous gill, that is, a gill with the filaments long, doubled back, and united to each other only by ciliary junctures.
The alimentary canal has no anal aperture, the excretions being carried off by a water-vascular system consisting of branching vessels which end in minute bundles of vibrating cilia, called ciliary flames.
The gill-filaments are entirely free, there being even no ciliary junctions.
When the solution is originally saturated it thus becomes supersaturated, and deposits these long ciliary crystals on the surface of the growth.
Some of these ciliary hairs are evidently osmotic in their origin, being localized as a tuft at the summit of the growth.
There are also dilatation of the pupil from paralysis of the circular fibres of the iris, and loss of accommodation and reaction to light from paralysis of the ciliary muscle.
Corodialysis, or separation of the iris from its ciliary attachments, is the method most easily performed, and most generally applicable.
Snell reports a case in which a piece of steel was imbedded and encapsulated in the ciliary process twenty-nine years without producing sympathetic irritation of its fellow, but causing such pain as to warrant enucleation of this eye.
Rider speaks of the lodgment of a fragment of a copper percussion cap in the left eye, back of the inner ciliary margin of the iris, for thirty-five years; and Bartholinus mentions a thorn in the canthus for thirty years.
The absence of ulceration and the very slight degree of accompanying sclerotic or ciliary congestion are also valuable features.
A to B, and B to C, by the growth and ciliary movements of the filaments.
Reproduction takes place by endogenous budding, and the swarm spores are flat or lenticular with a distinct ciliary girdle.
The ciliary muscle is generally thought to effect the change of form of the crystalline.
Each canal corresponds to a ciliary streamer, and forms ovaries at one border and testicles at the other; and these are so arranged that the eight intercostal fields (the spaces between the eight streamers) are alternately male and female.
Baxa relates the case of a soldier in whom paralysis of the left side persisted after recovery from the disease,[27] and that of a woman in whom paralysis of the left lower limb continued along with right ciliary paralysis.
I have known otorrhoea and ciliary blepharitis to occur as sequelæ.
Footnote: This should not be confounded with the long sight of old people, which is caused by the stiffness of the ciliary muscles, whereby the lens can not adapt itself to the varying distances of objects.
The lens is kept in place by the ciliary processes, g, arranged like the rays in the disk of a passion flower.
Anteriorly it forms the ciliary processes and the iris.
The crystalline lens is a transparent, biconvex body sustained by theciliary processes.
The ciliary body comprises three muscles for its make-up and connects the choroid to the circumference of the iris.
The ciliary body connects the choroid to the circumference of the iris.
The posterior chamber is a narrow chink between the peripheral part of the iris, the "suspensory ligament" of the lens and the "ciliary processes.
By its circumference it is continuous with the ciliary body, and its inner or free edge forms the margin of the pupil.
On examination the lids are found swollen and red, the eyeball shows congestion in the cornea and ciliary body, with some congestion of the conjunctiva.
There is an inflammation involving the choroid, ciliary body and iris.
The second tunic or coat (membrane) is formed from behind forward by the Choroid, the ciliary body and the Iris.
But when we look at nearer things the rays require to be more bent or refracted, so without any conscious effort on our part this ciliary muscle contracts and allows the lens to bulge out slightly in front.
For example, not only is the iris always ready to expand or contract according as we need more or less light, but there is a special muscle, called the ciliary muscle (cm, Fig.
The vascular membrane (iris, ciliary body and chorioid) and the retina become atrophic, the atrophy varying in degree in various parts.
In some cases the iris becomes adherent to the head of the ciliary processes and, when atrophy of the ciliarybody occurs, is drawn backward at the base of the iris by the receding tissues.
Dilatation and tortuosity of the anterior ciliary veins are due apparently to excessive flow of blood through them on account of the abnormally small amount carried off by the venae vorticosae.
Domec is of the opinion that this method succeeds in two ways, namely, in producing analgesia by traction on the ciliary nerves, and in reducing intra-ocular tension.
I admit that this intervention exposes the root of the iris and the ciliary body, but I have never yet had the slightest infection of the wound.
The openings for the passage of the anterior ciliary vessels are enlarged in many, particularly in advanced cases.
During the acute attack, the vitreous may become slightly turbid by transudation of serum from the vessel of the ciliary body and the chorioid and may become filled with fibrin.
The only change observed in these tissues is a reflex edema, excited apparently by pressure on the ciliary nerves and, probably, irritation of the vaso-motor fibers of the sympathetic.
The vessels of the ciliary process, which are larger and more tortuous in adults of advanced years than in the young, become enormously distended, causing almost complete obliteration of the perilental space.
He believes that dionin not only does not reduce the tension but hinders the filtration through the anterior lymph channels by the pressure of the edema which is produced on the veins and by the increased secretion of the ciliary processes.
This insures establishing our fistula in the most anterior position possible, and, therefore, as far away as possible from the ciliary body and the angle of the chamber.
Another cause he thinks may be from the librations to one side, and to the other, of the crystalline lens in the eye, by means of involuntary actions of the muscles, which constitute the ciliary process.
The nervous structures of the retina terminate at a wavy line, the ora serrata, behind the ciliary processes.
The aqueous humor occupies a chamber which is bounded in front by the posterior surface of the cornea and behind by the capsule and suspensory ligament of the lens and by the ends of the ciliary processes.
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 ciliary processes form a fringe around the slightly inverted rim of the choroid.
Between the two the ciliary vessels and nerves pass forward.
Behind it is pierced by the optic nerve; in front it is continued as the ciliary processes, which form, as it were, the rim of the bell.
In the former case the ciliary muscle adjusts the lens in order to produce a defined image upon the retina.
It was I who resolved the singular problem of rotation in the cells and hairs of plants into ciliary attraction, in spite of the assertions of Mr. Wenham and others, that my explanation was the result of an optical illusion.
On more violent irritation and after the death of the #Acanthometra# the myophriscs separate from the radial bars and remain attached to the distal ends of the conical gelatinous sheaths as free "ciliary coronas.
In viewing objects very near the eye, the ciliary processes are called into action to produce a proper inclination of the crystalline lens, so that the rays of light may be properly refracted to form a perfect image on the retina.
It is supposed that the muscular substance of the ciliary body and processes changes, by its contraction, the inclination of the crystalline lens.
The posterior chamber is the narrow space, less than half a line in depth, bounded by the posterior surface of the iris and pupil, in front, and by the ciliary processes and crystalline lens, behind.
In looking at objects at a great distance, the ciliary processes are called into a different action, to produce a different inclination of the lens.
Just behind the pupil is the lens of the eye, which also is adjustable by the action of a little muscle, called the "ciliary muscle".
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ciliary" in a variety of sentences. We hope that you will now be able to make sentences using this word.
