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借助眼睛这个光学系统,从眼球外面照明眼球内部,观察视神经乳头、视网膜等眼底状态的仪器,称为检眼镜。根据观察到的眼底像的情况,分为直接检眼镜和间接检眼镜。直接检眼镜是我国目前眼科临床应用的主要器械,缺点是视野小,检查时,医师和病人的脸部贴得很近。间接检眼镜早在二十多年前就已经在西欧、日本、美国等国家普遍采用,成为比直接检眼镜更重要的眼底诊察器械,优
With the aid of the optical system of the eye, the inside of the eyeball is illuminated from the outside of the eyeball and instruments for observing the status of the fundus, such as the optic nerve head and the retina, are called ophthalmoscopes. According to the observed fundus image, divided into direct ophthalmoscope and indirect ophthalmoscope. Direct ophthalmoscopy is the main clinical application of ophthalmic instruments in our country, the disadvantage is the field of vision is small, check, the doctor and the patient’s face paste close. As early as 20 years ago, indirect ophthalmoscope has been widely used in Western Europe, Japan, the United States and other countries to become more important than direct ophthalmoscope fundus examination equipment, excellent