The popular term “old flower” “old eye” refers to a phenomenon which, with age, reduces the force of eye lashes and hardens the crystals, leading to a physiological decline in eye regulation, leading to a close eye problem。
Old-age is the visual mark of the time. Only by scientifically recognizing it, responding positively, intervening and correcting it as soon as possible will we remain relatively clear, comfortable and of high quality in the second half of our lives。
01
What's old-fashioned
Many people can't tell the difference between old and distant vision. Although the main symptoms in both cases are near ambiguity and similar corrective lenses, the mechanism of action is completely different. Far-sightedness is one of the ill-regulated types, most of which is caused by congenital defects in the eyeball “hardware” (shorter or less luminous) and can occur at any age. The ageing of the “software” is a corollary of age growth, caused by a decrease or loss of eye-regulating capacity. It is worth noting that people who look away may be older or near fatigue。
The crystals in the eyes are like an elastic lens, and the lashes are like a spring. As age increases, the lens becomes hardened, the crystals slowly lose their elasticity and become more rigid, unable to change shapes and focus as they become more comfortable. At the same time, the spring will become less resilient。
These changes are an irreversible natural function decline. From the moment we were born, the ability of the eyes to regulate is slowly declining. Early on, the human eye was about 15. 00-25. 00d. From childhood onwards, as age increases, the control power of the eyes decreases gradually, by about 0. 25 to 0. 40 d per year. By the age of 40, the eye is less than 5. 00 d, starting to be less than comfortable with close work, and older persons are more likely to be found after 45 years of age. By the age of 50, it's about 200 degrees. After the age of 60, the maximum control power of the eyes is close to zero, with the number of old flowers growing to around 300 degrees, and the follow-up is largely not increased。
Measures to maintain visual health require early prevention, early detection and early disposal. People should take a good look at old age, develop good eye habits, change the intensity of closeness and actively correct old age in order to give themselves a clear “vision”。
02
How to make a scientific correction
In terms of age, the problem of near fatigue, which is younger than 40 years of age, can be intervened through the development of the right eye habits and, if not improved, through normative visual training or correction. The main claim of the 40 to 50-year-old population is to alleviate near-vision fatigue and, if the symptoms of old age are increasing, appropriate corrective methods should be adopted as soon as possible, rather than being carried out, so as to avoid symptoms such as headaches and eye swelling. People over 50 years of age are constantly falling in eye regulation and tend to prepare an old mirror. It should be noted that older middle-aged persons should go to specialized institutions for a full eye health check and maintain near-sightedness through formal corrective measures。
In particular, how can science choose the means of redress
1.
Frame glasses
At present, the majority of older-sighted patients are using single-slight mirrors, which are cheap, but only for nearness, which must be removed from the distance and are not easy to move. For groups with long-sighted eyes, old mirrors alone are more popular and need only be “emergency” when looking at the near future。
Another framework lens is the internationally recommended progressive multi-focus lens, which can be divided into the three functional areas of distance, proximity and ability to provide continuous visual clarity and meet the full range of visual needs. Such glasses are designed to look like ordinary glasses and fit easily, but at relatively high prices, the first-timers need to insist on a period of time before they can adapt and can be adapted to a variety of activities。
2.
Contact lenses
One-eyed contact lenses: like single-focus lenses, one eye's degree is used for remote views, the other eye's degree is suitable for closeness and can be satisfied by looking far. This approach is more appropriate for older middle-aged persons who used to wear contact lenses, which are easy to match and cheaper, but may have a stereovision that affects the eyes of the human person and reduces the sensitivity of the contrast。
Multi-focus contact lenses: designed through special contact lenses, while providing long, medium and near vision, suitable for those who pursue beauty and freedom of movement. Such contact lenses have a high level of requirements, such as pre-compatibility assessment and the degree selection of lenses, and the degree of satisfaction that they are to be worn is highly relevant to the nerve adaptive capacity of the user and takes some time to adapt。
3.
Surgical correction
Caption laser surgery: the multi-focus area is carved on the corneal by laser, which simulates the effects of a gradual lens and is suitable for persons with a good or no serious eye disease and may require a short period of adaptation. This approach is particularly appropriate for people who have a mild and moderate vision and are reluctant to wear a mirror。
Optical crystal implantation: a type of cataract surgery, with multiple focus functions, can simultaneously address the problems of old, near-sighted, distant and already emerging cataracts. It should be noted that there may be some risk in any operation, and that patients should go to regular health facilities for rigorous pre-operative assessment and surgical design。
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Drugs
In recent years, a variety of drugs for old-fashioned use have emerged and are gradually being used in clinical applications. For example, a chorus alkaline eye droplet can constrict pupils, producing a “puncture effect”, increasing the depth of the view, improving near, medium vision and not affecting distant vision, but may cause side effects such as headaches. Other types of eyedrops, such as some medium or medium medicine, can increase the oxidation of the lashes to a certain extent, reduce the fatigue, improve the visual function and improve the visual quality. It should be noted that drugs must be used under the guidance of a professional ophthalmologist。
03
It makes the eyes more anti-age
While we cannot prevent the advent of old age, the development of good eye habits and living habits can slow down the process and alleviate such discomfort as near fatigue。
Proper eye relief
One can use “apocalyptic + proximate” pre- and post-regulating exercise to relax the eyes, or to turn the eyeballs by clockwise, counter-clockwise, and to mitigate the lashes spasm. After 20-30 minutes of close range, it is recommended to look up at a remote object for dozens of seconds, with proper light. In everyday life, reading in a dark environment or in strong light should be avoided. Following professional inspection of visuals, if less flexible reconciliations are found, appropriate adjustment training can be conducted at an early stage in the appearance of old vision, thus avoiding over-eye use。
Dietary advice
The omega-3 fatty acids, such as deep sea fish, seed seed, are supplemented by a large intake of diets containing chlorophyll, vitamins such as kale, corn, blueberries, etc. Properly improving the immune function and body quality of the body also helps to maintain the health of parts such as crystals and staves。
Periodic eye examinations
After the age of 40, it is recommended that a comprehensive eye examination be conducted annually, including eye, reconciliation, etc. This will not only improve the accuracy of the examination of the old lenses, but will also lead to the early detection of potentially blind eye diseases such as glaucoma, yellow-stained variability, etc。
Author: kim wanqing wang jian, department of alteration (near fatigue) at the eye-observance hospital, wenzhou medical university
Member of the national college of health specialists and professor of optical optical hospital, winzhou medical university
