Normal value of SCA in eye examination?

summary

Vision plays an important role in life. With the rapid development of electronic products, people will be short-sighted if they don't pay attention to it. It's also very sad to see that they are wearing glasses when they are young. What does SCA on the examination result sheet represent when they have a vision examination?

Normal value of SCA in eye examination?

These are the abbreviations used to record the results of ophthalmic examination and optometry. S represents spherical lens (simple myopia or hyperopia), C represents cylindrical lens (astigmatism), and a represents the axial position of astigmatism. S and C are preceded by a plus sign for hyperopia and a minus sign for myopia.

In most cases, vision loss is related to poor light (too bright or too dark), especially in the study, work and life with high eye intensity.

Close eye posture is another factor affecting the incidence of myopia. When using the eyes at close range, the body should be still, sitting upright, and the books should be placed about 30cm away from the eyes.

matters needing attention

There are high-energy blue light in LED screens of computers, televisions and digital products. Blue light is a kind of visible light with strong penetration, which is harmful to human eyes if exposed for too long. Young people who are developing should shorten the time of watching the screen as much as possible. It is best to stick an anti blue light film on the screen for protection.