What is Farsightedness? What is the concept of farsightedness

Hyperopia refers to the fact that the eye is in a state of relaxation, and the parallel rays are refracted by the refractive system of the eye to form a focus behind the retina, forming a diffusion ring on the retina, and cannot form a clear image. After the eye is adjusted, the tortuous force is enhanced, the refraction of hyperopia is partially reduced, and the slight hyperopia can even disappear completely, which is manifested as an emmetropic eye, which can only be manifested when the cycloplegic agent is applied.

Classification according to the nature of hyperopia: axial hyperopia, the eye axis is shorter than the normal eye, which is the most common type of hyperopia;

Curvature hyperopia, hyperopia manifested by reduced curvature of any refractive surface of the refractive system of the eye, flattening of the cornea; Refractive index hyperopia, which is caused by a decrease in the refractive index of the refractive medium;

Aphakic hyperopia, postoperative aphakic eye or total lens dislocation can show high hyperopia.

Classification according to the degree of hyperopia: mild hyperopia below 300 degrees, moderate hyperopia between 300 and 500 degrees, and high hyperopia above 500 degrees. Hyperopia refers to the fact that the eye is in a state of relaxation, and the parallel rays are refracted by the refractive system of the eye to form a focus behind the retina, forming a diffusion ring on the retina, and cannot form a clear image.

After the eye is adjusted, the tortuous force is enhanced, the refraction of hyperopia is partially reduced, and the slight hyperopia can even disappear completely, which is manifested as an emmetropic eye, which can only be manifested when the cycloplegic agent is applied.

Classification according to the nature of hyperopia: axial hyperopia, the eye axis is shorter than the normal eye, which is the most common type of hyperopia;

Curvature.

Hyperopia refers to the fact that the main focus of parallel rays falls behind the retina after the reflexion of the eye after the refraction of the eye, mainly due to the short eye axis, and cannot form a clear image on the retina when the adjustment state is not used.

Farsightedness in children refers to a refractive state in which the parallel beam of light is refracted by the adjusted and relaxed eyeball and imaged behind the retina, which occurs when the refractive power of the eyeball is insufficient or the axial length of the eye is insufficient.

The optical focus of this eye is behind the retina, so the image on the retina is blurred. In order to see near objects clearly, it is necessary to use the adjustment force to move the focus behind the retina to the retina, which is generally corrected with a convex lens, so the hyperopic eye is often in a state of adjustment, and eye fatigue is prone to occur.

Farsightedness should be paid attention to and corrected in time. Surgery can be done for farsightedness, but it also depends on the individual's condition, and the doctor will do a detailed examination before the operation. If the degree of farsightedness is not high, it is not recommended, after all, the surgery is ***.

It is safer to wear glasses for correction, pay more attention to eye hygiene, and remember to go to the hospital regularly or use a home optometry to check your eyesight, so as not to deepen the prescription unconsciously.

Hyperopia is a kind of refractive error, generally as long as it is in the period of vision development, that is, under the age of 18, timely detection and timely **, farsightedness can be recovered.

One of the commonly used correction methods for farsightedness is to correct it with glasses, and the other is to take drugs together. It is recommended to take two sachets of Leyan Vision Nutrients every day, and insist on taking it for a period of time, the degree of farsightedness will be reduced, and the vision will be improved. The younger you are, the easier it is to recover.

Hyperopia refers to a refractive state in which the parallel beam of light is refracted by the adjusted and relaxed eyeball and imaged behind the retina, which occurs when the refractive power of the eyeball is insufficient or its axial length is insufficient.

1. Axial hyperopia: It is the most common type of hyperopia in the eye, which is due to the fact that the anterior and posterior diameter of the eyeball is shorter than normal, and every 1 mm short can produce degree hyperopia.

2. Curvature hyperopia: caused by the curvature of the refractive surface such as the cornea or lens becoming smaller due to various reasons.

3. Exponential hyperopia: It can often be caused by the decrease of the refractive index of the cornea, lens or aqueous humor and the increase of the refractive coefficient of the vitreous.

When the accommodation is relaxed, the parallel rays pass through the refractive system of the eye and focus behind the retina, which is called hyperopia.

The far point of the hyperopic eye is behind the eye, which is the virtual focus, so the typical hyperopic person has unclear vision, and the near vision is even more unclear. When the degree of farsightedness is low, the patient can use its accommodative ability to increase the refractive power of the eye and focus the light on the retina to achieve clear vision. However, due to the overuse of the adjustment of the well, the symptoms of visual fatigue in farsighted patients are more obvious.

Hyperopia is a refractive state in which the parallel light lines from 5 meters away are refracted through the refractive system of the eye and focused on the central gyrus of the retinal macular when the human eye adjusts to rest.

Hyperopia is due to the short axis of the eye, and when the accommodation state is not used, the main focus of parallel light rays falls behind the retina after the refraction of the eye. On the retina, a clear image cannot be formed. For this reason, the hyperopic eye often needs to use adjustments to strengthen the refractive power of the eye, so that the light entering the eye can be collected on the retina and become a clear image.

Mild hyperopia generally does not require glasses, but those with symptoms of visual fatigue or esotropia should be corrected as soon as possible. Preschool children with high prescription should be retested as soon as possible, and the prescription of the lenses should be re-examined once a year as they grow older, so as to meet the needs of vision growth.

That is the so-called presbyopia, the closer you get to the object, the more you can't see it clearly, and the farther away you can see it more clearly.

Hyperopia refers to the fact that when the ciliary muscle of the eye is relaxed, parallel light from the outside world shines into the eyeball and focuses behind the retina after passing through the refractive interstitium. For younger children or adolescents, as well as people with relatively low farsightedness, the eye is more accommodative, and it is often overlooked because it can be constantly adjusted to focus light on the retina. However, frequent use of the adjustment force can also cause eye fatigue, and in severe cases, orbital pain and headache will occur.

Usually a typical patient with farsightedness, the symptom is that the vision is not clear in the distance, and at the same time the near is not clear, so it is very difficult to affect daily life. It needs to be detected early, early**, especially in younger children, to avoid other eye diseases in the future.

The so-called hyperopia refers to the fact that the eyeball is in a static refractive state, that is, when the eyeball is in a relaxed state, the far parallel rays from the outside world cannot be focused on the retina through the refractive interstitium to form a clear focus, but are focused on the back of the retina to form a virtual focus, which is called hyperopia. Is farsightedness clear from a distance, but not from a near distance? Not exactly.

Mild farsightedness may not have much of an impact on vision. However, children with high levels of farsightedness may develop amblyopia, that is, they become blurred when they are farsighted and nearsighted. The above knowledge is for reference only, and the specific situation should be judged by a professional doctor, do not diagnose and ** by yourself.

远视 yuǎnshì [long sight; farsightedness] Visual images focus on the back of the retina.