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Causes of Floaters原因飞蚊症
The back of the eye is filled with a jelly like substance called the vitreous humour.后面的眼睛充满了一果冻样物质，称为玻璃体的幽默感。 As the vitreous humour gets older, strands of a protein called collagen start to become visible within it.由于玻璃体的幽默感得到老年人，组成一种蛋白质，称为胶原蛋白开始成为可见。 These strands swirl gently when the eye moves.这些strands旋流轻轻时，眼睛的动作。 Rather than being solid blobs, floaters are actually shadows cast on the retina by these pieces of collagen.而不是固体冒出的气泡，飞蚊症，其实阴影落在视网膜的这些件胶原蛋白。 This is because light travels through the vitreous in order to reach the retina, so any objects in the vitreous reflect on the retina.这是因为光透过玻璃，以达到视网膜，所以任何物体在玻璃体反映在视网膜。
Floaters are linked to the age of the eye and generally affect people over the age of 40.飞蚊症是连在一起的年龄眼睛和广泛影响的人， 40岁以上的。 They are most common in people in their 60s and 70s.他们是最常见的在人在其六十年代和七十年代。 This is when the vitreous humour starts to shrink away from the retina, causing it to thicken and clump together, and leading to floaters.这是当玻璃体幽默开始萎缩，远离视网膜，造成它增厚和丛在一起，并导致飞蚊症。 This is called posterior vitreous detachment (PVD).这就是所谓的玻璃体后脱离（ PVD法） 。 The debris left at the site where the vitreous separates from the retina become floaters.碎片留在网站上玻璃体分离视网膜成为飞蚊症。
Sometimes, as the vitreous humour pulls on the retina, it cause tiny blood vessels in the retina to burst and bleed into the vitreous slightly.有时，由于玻璃体的幽默，拉动对视网膜，造成微小血管在视网膜破裂和出血进入玻璃体轻微。 Red blood cells in the blood appear as tiny black dots, or may look like a swarm of gnats, or like smoke.红血球在血液中出现细小的黑点，或可能看起来不像一窝蜂gnats ，或想吸烟。 As the blood is re-absorbed, these sort of floaters generally go away, although it can take a few months.由于血液重新吸收，这类飞蚊症一般消失，虽然它可能需要数个月。
In about half of all people, the vitreous humour has separated from the retina by the age of 50.在约半数的所有的人，玻璃体的幽默，已脱离视网膜由年满50岁。 This normally doesn’t cause any problems and most people aren’t aware that it has happened.这通常doesnâ € ™吨引起任何问题和最广大人民arenâ € ™吨意识到，它已经发生了。 In some cases, however, the vitreous remains attached to parts of the retina, and tears the retina as it pulls away.在某些情况下，不过，玻璃体仍然是重视的部分视网膜，视网膜的眼泪，因为它放弃了。 If the retina tears, some blood can escape into the vitreous, causing a ‘shower’ of lots of floaters at once.如果视网膜眼泪，血液中某些可以逃生进入玻璃体，造成â € 〜 showerâ € ™大量飞蚊症一次。 You may also see flashes of bright, white light in your vision that look a little like lightening streaks.您也可能会看到闪烁光亮，白光在您的视觉，看起来有点象减轻条纹。
These types of flashes aren’t necessarily a sign of retinal detachment – they sometimes happen because of a migraine.这些类型的闪烁arenâ € ™吨一定的标志性视网膜脱离â € ： “他们有时会发生，因为一个偏头痛。
Retinal detachment 视网膜脱离
Tears in the retina need to be treated straightaway, because they can lead to retinal detachment.泪水在视网膜需要加以治疗直截了当，因为他们可导致视网膜脱离。 This is when the retina separates from the wall at the back of the eye, leading to sight damage.这是当视网膜政企分开，从围墙后面的眼睛，从而导致视线的损害。 The retina is responsible for changing light into meaningful, electric signals.视网膜是负责改变光进入有意义的，电动的信号。 These are sent through the optic nerve to the brain, where the brain translates the signals into the images we see.这些都是发送通过视神经向大脑，而大脑信号转换成图像，我们看到的。 If the retina is damaged, the pictures received by the brain become patchy or may be lost completely.如果视网膜损坏，照片所收到的大脑成为片状或可能会丢失。
People who are short-sighted, have diabetes, or who have had a cataract operation or an eye injury, are at a higher risk of retinal tears and retinal detachment.人谁是短视的，有糖尿病，或谁了白内障手术或一眼部受伤，正处于一个风险较高的视网膜裂孔视网膜脱离。
In some cases, floaters can be caused by eye disease or injury that causes inflammation (swelling) inside the eye.在某些情况下，飞蚊症，可造成的眼科疾病或伤害导致的炎症（肿胀）内眼。
