A Treatise on the Physiology and Diseases of the Eye:: Containing a New Mode of Curing Cataract Without an Operation; Experiments and Observations on Vision, Also on the Inflection, Reflection, and Colours of Light; Together with Remarks on the Preservation of Sight, and on Spectacles, Reading-glasses, &c, Volumen1Longman, Rees, Orme, Brown, Green, and Longman, 1833 - 222 páginas |
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Página 39
... frequently varying . When the fluid escapes , the pupil contracts for want of support ; the watery humour accordingly fills the opening of the pupil , and a small quantity of it also lies behind the iris . Formerly , the quantity of the ...
... frequently varying . When the fluid escapes , the pupil contracts for want of support ; the watery humour accordingly fills the opening of the pupil , and a small quantity of it also lies behind the iris . Formerly , the quantity of the ...
Página 42
... frequently the seat of disease , it has been very minutely ex- amined . We may consider it as made up of very transparent threads , beautifully figured and waved . Between the scales there is a transparent fluid , clear and colourless ...
... frequently the seat of disease , it has been very minutely ex- amined . We may consider it as made up of very transparent threads , beautifully figured and waved . Between the scales there is a transparent fluid , clear and colourless ...
Página 48
... frequent intercourse with the nomadic tribes of Asia , had the best opportunities of observing their capabilities in various respects . " The Calmucks , " he says , " have a fine nose , a good ear , and an extremely acute eye . On their ...
... frequent intercourse with the nomadic tribes of Asia , had the best opportunities of observing their capabilities in various respects . " The Calmucks , " he says , " have a fine nose , a good ear , and an extremely acute eye . On their ...
Página 70
... distinctions are of the utmost importance in regard to the treatment . Inflammation of the eye in a purulent form frequently occurs in infants , beginning in the conjunctiva palpebralis , to which it is often con- fined 70.
... distinctions are of the utmost importance in regard to the treatment . Inflammation of the eye in a purulent form frequently occurs in infants , beginning in the conjunctiva palpebralis , to which it is often con- fined 70.
Página 75
... frequently . Or , Take Extract of Opium , twenty . four grains . Dissolve it in six ounces of pure tepid Water , and add acetated Liquor of Am- monia two ounces . Mix them , and make a wash for the eyes . lotions , astringent collyria ...
... frequently . Or , Take Extract of Opium , twenty . four grains . Dissolve it in six ounces of pure tepid Water , and add acetated Liquor of Am- monia two ounces . Mix them , and make a wash for the eyes . lotions , astringent collyria ...
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A Treatise on the Physiology and Diseases of the Eye: Containing a New Mode ... John Harrison Curtis Sin vista previa disponible - 2016 |
A Treatise On the Physiology and Diseases of the Eye: Containing a New Mode ... John Harrison Curtis Sin vista previa disponible - 2023 |
Términos y frases comunes
affected amaurosis anatomy angle animals anterior chamber Antimony appear applied aqueous humour bathing the eyes becomes blind blisters blood blood-vessels body capsule cataract causes cetacea chamber choice of spectacles choroid ciliary coat colour concave conjunctiva consequence contracted convex cornea crystalline lens cure dark deafness disease distance drachms epiphora external eyeball eyelids fluid frequently ganglia ganglion glasses grains half an ounce healthy inch inflammation inflection injury inner iris iritis Jalap lachrymal gland leeches lens light luminous lymph means membrane motion muscles nature objects observed ointment opacity opaque operation ophthalmia opium optic nerve organ pain patient peculiar persons pills posterior produced Pulv pupil rays reflection refraction remarks remedies retina sclerotic sclerotica semi-circular canal sensibility shew sight species staphyloma substance Sulphate surface symptoms taken takes place tears Tinct tion transparent treatment ulcer unfrequently vessels vision vitreous humour
Pasajes populares
Página 133 - Truly the light is sweet, and a pleasant thing it is for the eyes to behold the sun...
Página 165 - ... and it often happens that the rays must be made not only to diverge less than before, but even to converge towards a focus behind such an eye, in order to make its vision distinct. Presbyopic persons have in general a small pupil, and, therefore, seldom acquire the habit of covering any part of it with their eyelids.
Página 45 - Calmuck had not perceived, at ihe estimated distance of thirty versts, the smoke and dust of the hostile army' and pointed it out to other equally experienced eyes, when the commander, Colonel Kischinskoi, could discern nothing with a good glass.
Página 119 - The characteristic features of this disease are the extraordinary slowness of its progress, the peculiar condition of the edges and surface of the ulcer, the comparatively inconsiderable suffering produced by it, its incurable nature, unless by extirpation, and its not contaminating the neighbouring lymphatic glands.
Página 143 - Thus he commences with characteristic boldness and confidence : — " It has always appeared wonderful to me, since Nature seems to delight in those close analogies which enable her to preserve simplicity and even uniformity in variety, that there should be no dispositions in the parts of light, with respect to inflection and reflection, analogous or similar to their different refrangibility. In order to ascertain the existence of such properties, I began a course of experiments and observations,...
Página 47 - ... the posterior portion very thick, almost cartilaginous. The whole eyeball was surrounded with very strong muscles ; and it may be easily understood how their action, modified according to circumstances, produces the requisite changes ; how the axis of the eye is shortened when the animal sees in the air, by bringing the lens nearer to the back of the globe, in order to obviate the strong refraction which the rays of light undergo in PHOCID^E.
Página 164 - ... to adjust itself to the veil's vibrations, that I have known not a few young ladies who have brought on great visual debility by this means alone. Again, tight clothing is manifestly hurtful to the sight ; for it needs not to be demonstrated, that the effective state of the eyes, as well as that of every part of the body, cannot be maintained without a free circulation of blood, which is obstructed when the body is too straitly laced or buttoned.
Página 166 - Rays converge sooner, so as to convene distinctly at the bottom of the Eye if the Glass have a due degree of convexity. And the contrary happens in shortsighted Men whose Eyes are too plump. For the Refraction being now too great, the Rays converge and convene in the Eyes before they come at the bottom; and therefore the Picture made in the bottom and the...
Página 116 - ... application of a small blister to the nape of the neck, or behind the ears, which should be kept open some weeks. After the chronic inflammation is subdued, the cataract is to be touched every morning with a solution of the potassa cum calce, beginning with a weak solution, and increasing it gradually. In the incipient stage of cataract I am convinced much good may be done, and a cure effected ; but when the disease is become confirmed, and the patient is old and feeble, there is little to be...
Página 44 - have a fine nose, a good ear, and an extremely acute eye. On their journeys and military expeditions, they often smell out a fire or a camp, and thus procure quarters for the night, or obtain booty. Many of them can distinguish, by smelling at the hole of a fox or other animal, whether the creature be there or not. By lying flat, and putting their...