funduscopy

August 12, 2017 17:51 | First Aid

remaining sections of the eyeball (lens, vitreous, fundus) visible at ophthalmoscope research - a concave mirror with a small hole in the center.Examination with the ophthalmoscope is very valuable in the diagnosis method, not only the eye, but also in many diseases of internal organs and central nervous system, as this can be seen viewed from the bottom of the eye, the optic nerve, retina and its blood vessels, choroid.The fact that the optic nerve is a part of the brain, extended to the periphery, explains why the disk state recognized many central nervous system diseases, inflammatory and degenerative processes, tumors.Retinal vessels are an extension of the brain.They vividly react to the body's disease;very often vary vessels in hypertension, blood diseases, kidney disease, diabetes, infections and many other diseases.

myriad of optical media eyeball used method of research in transmitted light.The patient is seated in a dark room, and the lamp is set back, on his left, at the head.By directing the

light into the eye of the test ophthalmoscope, you can see the red glow of the pupil that occurs due to the reflection of light rays from the bottom of my eyes.If the path of these beams meet cloud point, the pupil on red visible spots, strips etc.If the cloud point is in front center of rotation of the eye (the cornea or anterior regions of the lens), then the eye movement are moved to the side to side movement;the localization of the opacity of the eyeball rotation center (the posterior pole of the lens, vitreous body), they move in the opposite direction from the movement of the eyes.

Ophthalmoscopy need to keep in front of the patient's eye loupe to 13.0 A at its focal length from the eyes.Rays of light, trapped in the eye, reflected from the fundus passes through a magnifying glass in front of it and going out of focus.At the same time exploring sees the opposite, large and real image of the fundus of the patient.In order for the doctor to see the patient's optic disc, which lies medially from the posterior pole of the eye, the patient must look at the ear, the doctor of the same name, iethe study of the right eye on the right ear doctor.If the patient looks straight into the ophthalmoscope, it becomes visible region of the macula, which normally has the form of a horizontal oval, fringed with brilliant light stripe.The same ophthalmoscope (and even better electric) can be seen in the fundus even more magnified and direct form.To do this, exploring the closest to the patient's eye and looking into the eye through the pupil.

The same study possible with the help of a slit lamp and other complex devices.On examination, fundus pay attention to the color of the disc and its borders, the state of the tissue and vascular net and vascular membranes, presence of any foci of inflammatory or degenerative nature, tumors, hemorrhages, and otherwise, that may occur in diseases of the kidneys, heartcardiovascular and central nervous systems, tuberculosis, syphilis, toxoplasmosis, diabetes and other diseases.