1,148 results

... propor- tional to the other. Thus a slight mist, which gives the idea of in- creased distance, will also augment the apparent size; because, in order that an object two miles off should produce a picture upon the retina of the same extent with that made by ...

... as being most likely to ensure the patient's safety, on the presumption, probably, that a portion of the optic nerve ought to be removed as well as the retina; an operation so painful and so hazardous to ...

... disordered, and even its texture destroyed. But the retina exhibits a considerable power of accommodation to different amounts of light, and thereby the utility of the organ is much enhanced, as well as its safety provided for. After a short stay in the ...

... forward, that the needle would hurt the cornea retina &c, but this objection ... of couching are 1st the ease and safety it is performed as you may see the ...

... light are intercepted on their way to the retina, and vision thus impaired or reduced to a mere perception of light and shade. In the commence- ment of the complaint, all objects appear enveloped in a mist, dirty and dusty; the flame of the candle ...

... dovetailed into it. It has, by some anato- mists, been consider- ed a prolongation of the dura mater, ac- companying the op- tic nerve; whilst the choroid has been re- garded as an exten- sion of the pia mater, and the retina, of the pulp of the nerve. The sclerotic ...

... dovetailed into it. It has, by some anato- mists, been consider- ed a prolongation of the dura mater, ac- companying the op- tic nerve; whilst the choroid has been re- garded as an exten- sion of the pia mater, and the retina, of the pulp of the nerve. a. 1ns— ...

... the latter affections, the sen- sibility of the retina being impaired, the indi- vidual generally sees better in strong lights, and his sight is not improved by belladonna. In the commencement of cataract, objects seem as if surrounded by a mist or fog ; the pa- tient fancies that there ...

... objects are at first seen as through a mist; light bodies appear to fly before the eyes, and not until after months or years is sight wholly lost. Operation alone will obviate the evil by removing obstacle to passage of light to the retina. The following methods are employed for this purpose, ...

... before the eyes when they are shut. The retina is quite sensitive to the light in the incipient stages of the disease, and all objects seem covered w7ith a dense mist, and frequently every object seems double. Again, they ...