In the clinical work of ophthalmology, we often encounter the phenomenon that the ocular abnormalities expressed by patients do not match with the actual concept, and the following is an explanation of the common misinterpretation of the concept. 1. “Fundus”: We often encounter patients who say they have a disease of the “fundus” and register for a specialist number specializing in “fundus”. However, the “fundus” described by the patient is actually the “ocular surface”. What is the “fundus”? If we compare the human eye to a camera, then the “fundus” is the “negative” part of the camera, the inner wall of the posterior part of the eye – the retinal tissue. Under normal circumstances, we cannot see our own fundus or retina with the naked eye. The term “fundus” refers to diseases of the retina. What is the “ocular surface”? The “surface of the eye” is the part of the eye that we can see, including the cornea and conjunctiva on the front surface of the eye, and the conjunctiva on the inside of the upper and lower eyelids. Blood and redness on the surface of the eye are usually caused by conjunctivitis, keratitis or subconjunctival hemorrhage, and are not part of fundus disease. “Fundus disorders are mainly associated with loss of vision and blurred vision, and are usually not painful or uncomfortable. Ocular surface diseases, on the other hand, often cause pain and discomfort. We hope that patients with eye diseases will be able to get the right number for their specialty so that they will not be delayed in their medical appointments. “It is recommended to register for general ophthalmology or ophthalmology specialists for “ocular surface” diseases. 2. “Macular”: Often people say, “Doctor, I have macular”, I will tell them, “We all have macular”. Macula” is an anatomical name, just like we have a nose on our face, “macula” is the central part of our retina at the bottom of our eyes, which is the area with the sharpest vision, usually we check the visual function of the “macula” area. The visual function of “macula” area. When there is a lesion in the macula, patients will have symptoms such as loss of vision, distortion of visual objects, central dark shadow obscuration. Therefore, if the above symptoms appear, you need to see the specialist clinic of “fundus disease”. There are many kinds of macular diseases, the common ones are: age-related macular degeneration, macular fissure, macular anterior membrane, highly myopic macular lesion and macular edema (caused by various diseases), etc.