What's the trouble with too big eyes?

1, easily damaged. Due to the large exposure area and long time of closing eyes (from eyelash reaction to complete closing eyes), foreign objects such as dust are easy to invade and cause injuries. Sudden glare is also the killer of big eyes. Therefore, people with big eyes had better prepare goggles when they go out; It's best not to be a welder or something.

2, big eyes, unable to dodge external targets such as branches and spikes, easy to get hurt. The so-called "big eyes and small eyes" is also true.

3, the eyes are infected by bacteria, there are many opportunities to be infected. Therefore, big eyes are prone to eye diseases such as pinkeye.

4, eyeball volume, mass is too big, inertia force is too big, sudden acceleration and deceleration may be too much. So big eyes are not suitable for driving, so be careful to throw your eyes out when you crash. Therefore, big eyes can't be astronauts. You see, Yang Liwei is just a small eye with a single eyelid.

5. Intraocular aqueous humor and vitreous body are good conductors. So it is easy to produce eddy current. Housewives should not share microwave ovens and mobile phones.

6. There are no temperature-sensitive cells on the eyeball. On the surface, eyes are not afraid of cold. In fact, there is a potential danger here: frostbite. The insulation of big eyes is difficult (the insulation of eyes only depends on the blinking of eyelids), so big eyes are not suitable for living in the north, especially for long-term outdoor activities in winter.

7. The eyeball is large, and the lens used to adjust refraction in the eye is also large, which requires the adjustment of ciliary muscles. Therefore, ciliary muscles are prone to fatigue, causing eye pain and headache.

8. The intraocular pressure is difficult to control, which is easy to cause glaucoma and lead to blindness. You may have noticed that blind people in movies used to have big eyes.

9. There are no blood vessels in the lens, which are all supplied by tissue fluid. If the lens is big, it is difficult to supply nutrition and it is easy to cause cataracts.

10, fundus capillaries play an important role in ocular circulation and metabolism. When suffering from arteriosclerosis or diabetes for some reason, the capillaries of big eyes are more likely to be damaged, leading to retinal hemorrhage and shedding.

1 1, the eyeball is large and the curvature is small. It is difficult to maintain the spherical shape with the help of the cohesion of intraocular liquid and the tension of the ocular membrane, so it is easy to deform, leading to myopia, astigmatism or hyperopia.

12. When big eyes are sick and need corneal transplantation, it is not appropriate to find such a big corneal donor.