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Anonymous users2024-02-15Our eyeballs are made up of spherical shells and contents. Among the contents, mainly the vitreous, is a clear and transparent gel. It plays a vital role in maintaining the shape of the eyeball and vision.
When a detailed examination of the fundus by an ophthalmologist reveals observable opacities in the vitreous, it is called "vitreous opacity"; After examination, no turbidity was found, and there was no abnormality in the fundus, but the patient felt the floaters fluttering in front of his eyes, which was called "floaters".
myopia, various age-related intraocular degeneration, metabolic changes, etc., resulting in liquefaction and degeneration of the vitreous; Decomposes some cloudy opaque material out. Fluttering in the vitreous with the movement of the eyeball! This type of vitreous opacity floaters can be a**, and there is no need to panic.
Just like when people get old, their hair turns gray and their teeth fall out, it is a natural phenomenon; Fortunately, the vast majority of vitreous opacity floaters fall into this type.
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Anonymous users2024-02-14That's because your vitreous is very impuritous, medically called "floaters", it is the vitreous that contains opaque substances, so that when you look at white objects, you will see clearly, it will move, when you turn your eyes, it will move, when you set your attention, it will move.
It is also a common eye disease, but it is difficult to cure and does not affect vision.
This is related to myopia, which is more common in people with myopia and over 50 years of age. Nowadays, due to excessive use of eyes, there are more floaters in teenagers.
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Anonymous users2024-02-13When you look at bright places, white walls, and blue skies, you can see insects and thread-like things flying in front of you, and you can feel them moving with your eyes, and they don't disappear when you blink, but you can't feel them in dark places. This sensation of "floaters" in front of your eyes is called "floaters". Normally, most of the eyeball is filled with a gelatinous transparent substance called vitreous.
Light passes through the cornea, the lens, and then through the vitreous to the retina. However, if there is a "cloudiness" in the vitreous for some reason, and you are looking at the bright background, this "cloudy" shadow will be reflected on the retina and move with the movement of the eyeball, causing you to see "floaters" such as bugs or threads flying in front of you, thus creating the feeling of floaters. This vitreous "clouding" and the resulting floaters have both physiological and pathological causes.
Therefore, in medicine, they are called physiological floaters and pathological floaters. Physiological floaters can generally be divided into the following three types: congenital physiological floaters; senile physiological floaters; Myopic physiological floaters.
On the basis of eye examination, once the above three types of floaters are diagnosed, there is no need for a certain **.
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Anonymous users2024-02-12Hello, your symptoms may be vitreous opacity, slight vitreous opacity is also called floaters, related to myopia, most of them are normal, no need **, if you feel heavy, you can take Volitin orally, point aminoiodopeptide eye drops.
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Anonymous users2024-02-11Hello, according to your description, it is considered that the lens is cloudy, which should be caused by myopia. Guidance suggests that it is best to have your vision checked in this case. Take a break with your eyes. Wishing you good health.
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Anonymous users2024-02-10Go to the eye department of a regular hospital for an eye examination, after all, the eyes are very important, and the examination will be relieved, if there is a problem this morning**.
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Anonymous users2024-02-09In the resting state of ciliary muscle accommodation, parallel rays (light emitted by infinitely distant objects) pass through the refractive system of the eye (cornea, aqueous humor, lens, vitreous), and those focused on the retina are emmetropic eyes, those focused in front of the retina are myopic eyes, and those focused behind the retina are farsighted eyes. Hyperopia and myopia are blurred vision by forming an enlarged blurred spot on the retina, while astigmatism is the formation of a diffuse halo on the retina. Myopia, farsightedness, and astigmatism are collectively referred to as refractive errors.
Myopia (true myopia) and hyperopia are mainly caused by excessive curvature (myopia) or too small (hyperopia) of the surface of the cornea and lens, and too long (myopia) or too short (farsightedness) of the eye axis. When the corneal curvature changes by 1 mm diopter (i.e., the corneal curvature shrinks by 1 mm, myopia increases; farsightedness on the contrary); For every 1 mm change in the eye axis, the degree of change in refraction (i.e., 1 mm of axial growth, myopia growth; farsightedness on the contrary); Astigmatism is mainly caused by the inconsistent curvature of each meridian on the surface of the cornea and lens, and can also be caused by abnormal refractive index of the cornea or lens.
The conscious phenomenon presented when the vitreous is clouded, that is, when looking at the white bi or looking at the sky, there are black spots floating in the field of vision, sometimes like floaters, commonly known as "floaters", the number may be one or more than a several, and move with the change of sight, this is the image state of the optic cells to the optic translucent opacity, which is called the internal vision phenomenon, which is divided into physiological and pathological aspects.
When the vitreous is liquefied, the retina is often felt by the retina pulled by the reticular structure of the vitreous humor, which eventually leads to retinal detachment.
If so, it means that the liquefied vitreous reticular structure begins to pull the retina, which may lead to retinal detachment, if there is no flash symptoms, it is generally physiological, and the problem is not big, because the eye axis of the myopic eye is generally longer, so the node is relatively before the test, so the projection of floaters in the retina of the myopic eye is more obvious. It is recommended that you pay attention to controlling the growth of myopia to prevent pathological changes.
I've also seen it on TV, it may be a fruit fly germ, so let's go to the hospital and see if it's true, the consequences will be quite serious.
The eye can not focus on seeing things, which generally refers to the inability of the eye muscles to adjust normally when looking close, which may be caused by abnormal nerve conduction pathways from intracranial to ocular innervation, or abnormal function and degeneration of the ciliary muscle, and abnormal neuromodulation may be compressive lesions such as intracranial or orbital tumors, as well as neuroinflammation, congenital developmental abnormalities and other factors, which generally need to be treated for the cause, and there may be residual dysfunction after **. The ciliary muscle, the most important tissue in the eye, can change the convexity of the lens and adjust the focus of the eye to see near and far. Local inflammation, trauma, etc. can cause functional damage, the most common is senile degenerative changes, that is, presbyopia, the ability to regulate the ciliary muscle will gradually decline after the age of 40, and the ability to regulate after the age of 50 basically disappears, and reading glasses need to be worn to improve vision.
Hello: Dry eyes, blurred vision, this is a manifestation of dry eye syndrome, is a very common disease in ophthalmology, after this situation first go to the hospital for examination, such as dry eye related examinations, to understand the specific condition and severity. For mild dry eye syndrome, you can choose artificial tears to alleviate the symptoms, such as sodium hyaluronate eye drops, when buying eye drops, try to choose a type that does not contain preservatives, *** is relatively smaller, you can also choose the best contact lenses or wet room lenses, which can also relieve the symptoms of dry eye syndrome. >>>More
The structure sketch is not exactly the outer outline of the object that the eyes see, just like our human body, the structure of our human body cannot be as simple as the outer outline of the human body that we see, it also has the internal structure that we cannot see with the naked eye, such as the structure of the human body and other structures such as bone organs, and the same is true of geometry, in addition to the few lines and surfaces of the outer contour that we see with the naked eye, there are also internal structural lines and surfaces, as well as the relationship between the internal structure, etc., and because the internal structure we can't see it, we have to understand them. Then draw it, of course, on the picture should be represented by dotted lines, because in this way you can distinguish the relationship between the internal structure and the external structure, if you have a good grasp of the structural sketch, then your sketch will be greatly improved.
Blurred visionSometimes there is a fog in the eyes, which may be due to eye fatigue or pseudomyopia, or it may be refractive errors such as true myopia. If symptoms persist, it is recommended to go to the ophthalmology department of the hospital for tests such as visual acuity, dilated refraction, slit lamp, etc., to determine the specific cause. If you do have true myopia, you will need to wear glasses to correct your vision. >>>More