Fundus examination

Fundus examination is an important method to examine the vitreous, retina, choroid, and optic nerve diseases. Direct ophthalmoscopy. What you see is a 16x magnification. The construction of the mirror includes an illumination system and an observation system. The light is reflected by a small mirror into the eye to be inspected, and the eye examiner can inspect the fundus through a series of mirror plates with adjustable refractive errors. Before inspecting the fundus, you should first check the refractive interstitial for turbidity. Check the fundus to check the nipple, macula and retina. Basic Information Specialist Category: Ophthalmic Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: Inappropriate people: glaucoma patients. Normal value The normal optic disc of the optic disc is slightly elliptical, reddish, with clear boundaries, a funnel-shaped depression in the center, and a slightly lighter color, called a physiological depression. The central and venous arteries of the retina are bright red, the veins are dark red, and the ratio of arterial to venous diameter is 23. The macular part is located at the side of the eyeball 2 to 2.5 PD (the diameter of the optic disc), slightly below, about one disc or slightly larger, no blood vessels, and the center has a large point of reflective point called the central concave light reflection. . The retina retina is normal and transparent, and the fundus is evenly dark orange. When there is choroidal vascular permeability, a leopard-like fundus is formed. Clinical significance Abnormal results: There are edema, exudation, hemorrhage, detachment and pigmentation spots in the retina, and there are new blood vessels and tumors. The elderly who need to be examined are susceptible to disease and eye disease. Precautions Forbidden before examination: Allergy to drugs should be explained. Requirements for inspection: first dilute and then check. Inspection process 1 direct ophthalmoscopy. What you see is a 16x magnification. The construction of the mirror includes an illumination system and an observation system. The light is reflected by a small mirror into the eye to be inspected, and the eye examiner can inspect the fundus through a series of mirror plates with adjustable refractive errors. Before inspecting the fundus, you should first check the refractive interstitial for turbidity. Check the fundus to check the nipple, macula and retina. Generally from the rear pole to the peripheral part. 2 indirect ophthalmoscopy. What you see is an inverted image that is magnified 4 times. The range of the fundus is large, and the stereoscopic effect is strong. At the same time, the lesions whose eyes are not on the same plane can be seen at the same time. The scleral compressor can be used to check the fundus of the periphery. Not suitable for the crowd Inappropriate people: glaucoma patients.

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