1. Far vision mainly refers to the ability to see far away, mainly to go to the ophthalmology department for examination. When measuring far vision, you should stand at a distance of five meters from the eye chart and identify it. At this time, the identified vision is called far vision.
2. Near vision: it mainly refers to the ability to see near. If ophthalmology needs to distinguish, the near vision is mainly to give the patient a near vision chart. The near eye chart is a small eye chart placed on the table. The patient takes a sitting position and puts the near eye chart 33cm away from his eyes for identification. If you can clearly recognize the visual target on the near vision chart, especially the bottom visual target, it means that there is no problem with near vision. Therefore, near vision refers to the visual acuity of about 33cm in front of the eyes. The basis for judging the patient's myopia is mainly to check the far vision and see if the vision can reach more than 1.. If you don't reach more than 1., you may suffer from myopia. Checking near vision is mainly to check whether the patient has presbyopia. The clinical manifestation of presbyopia patients is often that they can't recognize the small fonts nearby within a distance of 33cm, so they need to wear presbyopia glasses to correct them.
For more information about myopia, Guiyang Aier Eye Hospital is recommended. Guiyang Aier Ophthalmology is a tertiary specialized hospital in Guizhou Province, which integrates medical treatment, scientific research, teaching and academic exchange. The hospital is designed and arranged according to the international standardized mode, and the medical environment is comfortable and elegant. It is equipped with all kinds of ophthalmological examination and surgical treatment equipment, and has gathered a large number of professional and technical personnel in ophthalmology at home and abroad to provide comprehensive and full-service eye medical care and health care for every patient. Welcome to click to learn more.