What is an eye scan

summary

Some people may have heard the word ophthalmography, but they don't know what it's used for or how it works. Experts said that a variety of macular diseases, a variety of retinal, choroidal, optic nerve diseases and systemic diseases caused by retinopathy can use this method for examination.

What is an eye scan

Ophthalmography is a kind of examination method in which dye which can produce fluorescence effect is injected into blood vessel quickly, and fundus lens or fundus camera with color filter is used to observe or take pictures at the same time.

As the dye runs with the blood flow, it can draw the shape of blood vessels dynamically. With the fluorescence phenomenon, the contrast and visibility of blood vessels are improved, and some subtle changes of blood vessels can be identified. In this way, many situations that can not be found by using the fundus lens alone can be detected. Moreover, the fundus examination results can be more objective, accurate and dynamic by using the fluorescent fundus camera for continuous photography, so as to make the fundus examination results more objective, accurate and dynamic It provides valuable basis for clinical diagnosis, prognosis evaluation, treatment, curative effect observation and pathogenesis.

But when the renal function is abnormal, it can not be done, because the fluorescent contrast agent needs to be excreted from the kidney. When the renal function is not complete, the contrast agent can not be excreted, causing accumulation. The main diagnosis is that the serum creatinine is not higher than normal.

matters needing attention

In general, very few patients may have sodium fluorescein allergic reaction, but we should pay attention to it. During the examination, vomiting may occur, which is a normal phenomenon. Don't worry.