The scientific experiments were led by Leibniz Institute of Animal and Wildlife (Leibniz-IZW) and chaired by Professor Richard A. Holland (Bangor University, UK) and Dr. Gunārs P ē tersons (Latvia University of Life Sciences and Technology). It shows that now the cornea of ​​the eye is the site of an important sense in bat migration. A bat’s directional sense is its eyes. If the cornea is anesthetized, the otherwise reliable sense of orientation will be disturbed while the ability to detect light remains unaffected. The paper was published in the scientific journal Communications Biology. In the bats of one experimental group, the scientists locally anesthetized the cornea with a drop of oxybuprocaine. This surfactant is widely used in ophthalmology, where it is used to temporarily desensitize the cornea when the human or animal eye is over-irritated. However, an effect on orientation has not been noted before. In another experimental group of bats, the team anesthetized the cornea of ​​one eye. Individuals in the control group were not given anesthesia, but were instead given isotonic saline as eye drops. All animals in this scientific experiment were captured in a migratory corridor on the Baltic coast and released individually in the open field 11 km from the place of capture. First, the scientists used bat detectors to ensure that no other bats were in the field at the time of releasing the test animals. The direction of movement of the released bats was observed without knowing how the bats were treated experimentally. Dr. Oliver Lindecke, first author of the paper, explains: “The control group and the anesthetized group with unilateral corneas clearly oriented to the expected south, while the bats with corneas were anesthetized. both sides fly in random directions.” He added: “This clear difference in behavior suggests that corneal anesthesia has disrupted the sense of direction, but orientation seems to still work well with one eye. The corneal treatment wore off after a short time, and the bats were able to continue their journey south after the trial.” To rule out the possibility that an irritated cornea also affects visual sensation and that the scientists could therefore draw erroneous conclusions, they performed an additional test. Again, they examined whether the bats’ response to light changed after anesthetizing the corneas on one or both sides. “We know from previous research that bats prefer a illuminated exit when leaving a simple Y-shaped maze,” explains PD Dr Christian Voigt, head of the Leibniz-IZW Department of Evolutionary Ecology . “In our experiment, animals that were anesthetized either unilaterally or bilaterally also showed this preference; we can therefore rule out that light vision has been altered after corneal treatment. The ability to see light will of course also affect long-distance navigation. ” For instance, many vertebrates such as bats, dolphins, whales, fish and turtles can safely navigate in the dark, whether it’s under the open night sky, when it’s cloudy at night or in caves and tunnels as well as in the depths of the ocean. For decades, scientists have searched for a sense or a sensory organ that enables animals to perform navigational and orientation tasks that seemed unimaginable to humans. Magnetic sensation, so far only demonstrated in certain mammalian species. Experiments show that iron oxide particles in cells can act as “microcompass needles”, as is the case with some species of bacteria. The team’s experiments on Lindecke and Voigt provide for the first time reliable data for determining sensory orientation in migratory, free-migrating mammals. Exactly what a bat’s cornea looks like, how it works, and whether it is a long-sought magnetic sense need to be pointed out in future scientific investigations.

However, contact lenses can cause serious damage to vision when not used correctly. Sharon Copeland – ophthalmologist – shares 3 common mistakes when wearing it. Fashionable contact lenses are very popular in recent times. Photo: Femina. Avoid contact with water Contact lenses are usually cleaned with a special solution. Forgetting to take off your glasses and being in direct contact with water will make your eyes susceptible to infection. Sharon emphasized: “All kinds of water are not good for contact lenses. If you accidentally step into the bathroom with contact lenses, close your eyes and do not come into contact with water. When stepping outside, need to dry your hands and remove them. them”. Water can contain Acanthamoeba bacteria when it gets on contact lens surfaces, which can easily infect the eyes. This leads to keratitis, red eyes, blurred vision, sensitivity to light and, more seriously, vision damage. Avoid direct contact with water when wearing contact lenses. Photo: The Sun. Do not rub your eyes Pollen, dirt or makeup causes us to rub our eyes. But for contact lens wearers, this is more prone to tearing or the lens being pushed up above the eyelid. In addition, when rubbing the eyes, bacteria easily penetrate from the hands into the cornea. Sharon added: “If your eyes feel uncomfortable, use some eye drops to relieve pain. Cooling cloths placed on the eyes can also ease the pain. Remove contact lenses. when you feel irritation”. Avoid rubbing your eyes while wearing contact lenses. Photo: The Sun. Wear contact lenses to sleep Wearing contact lenses to bed puts you at a higher risk of eye infections. Ophthalmologist Jennifer Fogt said: “Wearing contact lenses while sleeping reduces the amount of oxygen to the eyes. That can lead to eye infections such as keratitis or worsen dry symptoms. This happens when you don’t have enough water to lubricate your eyes, scratching the cells inside.” Contact lenses need to be cleaned every night. If you accidentally deflect the glass, do not attempt to remove it. Instead, gently rub your eyes and use eye drops to reduce the condition. You need special solutions to reduce irritation. Photo: The Sun.

The bat’s sense of direction are the eyes. Mammals see with the eyes, hear with the ears, and smell with the nose. But which senses or organs allow them to direct their migration, sometimes beyond their feeding area and thus require extensive orientation? Scientific experiments led by the Leibniz Institute for Animal and Wildlife Research (Leibniz-IZW) led by Professor Richard A. Holland (Bangor University, UK) and Dr. Gunārs P ē tersons (Latvian University of Life Sciences and Technology). It shows that the cornea of ​​the eye is now an important sensory site for bat migration. If the cornea is anesthetized, another sense of reliable direction is disturbed while its ability to detect light remains unaffected. The article was published in the scientific journal Communications Biology. In the bats of an experimental group, the scientists localized the cornea with a drop of oxybuprocaine. This surface anesthetic is widely used in ophthalmology, where it is used to temporarily desensitize the cornea when the human or animal eye is overly irritated. However, the influence on the orientation has not been noted before. In another group of experimental bats, the team anesthetized the cornea of ​​one eye. Individuals in the control group received no anesthesia, but instead received an isotonic saline solution as eye drops. All animals in this scientific experiment were caught in a migration corridor on the Baltic coast and released individually in open fields 11 km from the capture site. First, scientists used bat detectors to ensure that there were no other bats in the field at the time of releasing the test animals. One observes the movement of the released bats not knowing how the bats have been treated experimentally. Dr. Oliver Lindecke, the first author of the paper, explains: “The control group and the one-sided corneal anesthetic group had a clear orientation to the expected south, while the bats with the cornea were anesthetized. the two sides fly in random directions. ” “This obvious difference in behavior suggests that corneal anesthesia disrupted the sense of direction, but the ability to orient seems to still work well with one eye,” he added. After a short time the corneal treatment ended, the bats were able to resume their journey south after the test. ” To rule out the possibility that an irritated cornea also affects visual sensations and so scientists could have come to the wrong conclusion, they performed an additional test. Again, they tested to see if a bat’s response to light changed after anesthesia on one or both sides. “We know from previous research that bats prefer a illuminated exit when leaving a simple Y-shaped maze,” explained PD Dr. Christian Voigt, head of the Leibniz-IZW Department of Evolutionary Ecology. . “In our experiment, animals under one or two side anesthesia also showed this preference,” he said; we can therefore rule out that light vision has been altered after corneal treatment. Light visibility will of course affect long-distance navigation as well. ” For example, many vertebrate species such as bats, dolphins, whales, fish and turtles can navigate safely in the dark, whether it is under the open night sky, when it is cloudy at night. or in caves and tunnels as well as in the depths of the ocean. For decades, scientists have been searching for the senses or a sensory organ that makes it possible for animals to perform navigation and navigation tasks that seem unimaginable to humans. The magnetic sensation has so far been demonstrated only in some mammals. Experiments have shown that iron oxide particles in a cell can act as “microscopic compass needles”, as is the case with some species of bacteria. The team’s experiments on Lindecke and Voigt provide, for the first time, reliable data for the determination of sensory orientation in free-migrating, migratory mammals. Exactly what a bat’s cornea looks, how it works, and whether it is a long-sought magnetic sense needs to be pointed out in future scientific investigations.

Dr. Robert Dorin (New York) warns, fake eyelash adhesive is made from formaldehyde, a substance that is toxic to the body when people come into contact with it. However, manufacturers often hide this ingredient by printing very small text on the tube. Illustration. When used regularly, in addition to affecting the eyes, this amount of toxic substance will penetrate and go deep into the body, leading to toxicity and affecting the functioning of other parts of the body. . Currently, fake eyelashes and eyelash glue are widely sold on the market with their origin and quality difficult to determine. An unidentified eyelash adhesive can become the cause of epilepsy, more so, damage to the hair follicles, making the eyelashes no longer able to regenerate and grow. Illustration. False eyelashes are made from synthetic materials, easy to catch dust, very unhygienic when we use glue attached to the eyelids, thereby causing irritation to the eyes and skin. The rate of allergy when applying fake eyelashes is quite high because the material to make the eyelashes and the composition of the adhesive is not good enough, easily irritating to the eyes. Not only does it make your eyes uncomfortable, but in the long run can cause eye infections and lead to blindness. Therefore, choose quality fake lashes and glues. If you feel itchy or show signs of red, swollen eyelids when attaching fake eyelashes, remove them immediately. Illustration. The fake eyelashes are stuck to the eyelids often causing the eyes to be stained, rubbing a lot of the eyes, causing damage to the eyes. When you wash your face, sweat it or leave it on for a long period of time, the glue will come off and fall into your eyes, which will create a favorable environment for bacteria to multiply. In the long run, it can cause eye inflammation, blepharitis, conjunctivitis and even damage to the cornea. Illustration. Using fake lashes means that these fake lashes will weigh on real lashes, cause real lashes to bear a lot of weight and inadvertently damage real lashes and lids. When removing fake eyelashes, the glue is so tightly attached that you may accidentally drop the real eyelashes. From there, your real eyelashes will become thinner and thinner and you will want to use more fake lashes if you want to look beautiful. In addition, the substances contained in the fake eyelash glue are not good for the eyes. If used regularly, it will stop the growth of natural eyelashes, even damaging and damaging the hair follicles, preventing eyelashes from regrowth. Illustration. Eyelids are inherently sensitive, and the use of fake eyelashes, even expensive fake lashes, is advertised as being super light, which can make the eyelids feel heavy, increasing the risk of drooping them. This can not be detected early, but it takes a long time to attach false lids to the eyelids before you feel the eyelids are heavy. Eyelid droppings are very difficult to treat, so you should consider them before using them on a regular basis. According to leading doctors, applying false eyelashes can affect the color of the eyes. The amount of brown pigment in the iris is altered, causing iritis, which leads to a change in eye color. Illustration. The visible harms of applying false eyelashes are dangerous. Therefore, use fake lashes only when absolutely necessary and should choose good quality lashes and scissors, despite the high cost. Instead of using fake eyelashes, you can naturally lengthen and darken your lashes by applying coconut oil, olive oil … regularly.

Dang Tuan (Hanoi) The type of glasses you ask are contact lenses placed at night. These are glasses that help people with nearsightedness, astigmatism achieve the best vision naturally without having to wear any kind of conventional frames or contact lenses. Glasses can be used for the following cases: People with nearsightedness (less than 10 degrees) without or with astigmatism of 3 degrees or less; Children are increasing during development; Those who are not suitable for the use of traditional frames during the day; Children are not old enough for surgery; Those who are ineligible or ineligible for eye surgery to cure refractive errors. With contact lenses placed at night, users just need to put on specially designed contact lenses before going to bed, then remove them when waking up. While you sleep, the lenses gently reshape the front surface of the eye (cornea) so that the user can see clearly the next day. However, the glasses must be tailored to each person and special equipment such as dedicated corneal mapping system, state-of-the-art refractometer system is required to provide accurate visual results. Night-time contact lenses are an option for those wanting to remove their lenses, in addition to Lasik surgery. Night contact lenses must be tailored to the individual

Your cornea will have to absorb most of the UV radiation when exposed to sunlight, causing cataracts or macular degeneration, keratitis, corneal keratocytes … many Eye diseases can arise with the negative impact of UV rays. Especially the days UV rays are as dangerous as they are now . Sunglasses are not merely a fashion accessory but also a protective item for the eyes. Therefore, choosing the right glasses is extremely important to keep your eyes safe. You need to pay special attention to this index on the glass to choose the most effective UV protection. Standard UV resistant sunglasses UV400 glass is recognized as having the highest UV protection standards. With the ability to block radiant light rays with a wavelength up to 400 nanometers. This standard is considered quite high and strict for maximum UV protection for your eyes when going in the sun. Wholesale Assorted Colors Metal UV400 Square Aviator Fashion Sunglasses Womens Bulk. From the ability to protect eyes from dust, smoke and solar radiation, when choosing UV400 glasses, you should pay attention to choosing glasses according to the following standards: * According to Australian standard AS 1067 . Sunglasses are divided into 5 categories, from UV filter category 0 to UV filter category 4, based on the amount of light the glasses absorb. UV filter category 0 has the least ability to block UV rays and sunlight. UV filter category 04 has the best level of protection. * The US standard is ANSI Z80.3-1972 . Under this type of standard, lenses should be able to keep UVB rays no more than 1% and UVA rays no more than 0.5 times that of visible light. * The European standard is EN 1836: 2005 . According to this type of standard, the UV filter category 0 is the glass that does not block UV at the necessary level, the UV filter category 1 is sufficient, the UV filter category 2 is the good compartment, and the UV filter category 3 is the complete compartment. The standard size for a UV-protective eyewear according to European standards is EN 1836: 2005. The material of the sunglasses resists UV rays In the old days, sunglasses were simply made of glass. But today, most of the better, more durable lenses are made of plastic because it filters ultraviolet rays. This special plastic, called polycarbonate, is capable of withstanding strong bumps. There is a special type of glass called high index (more clearly high index of refraction, meaning high index of refraction) that is resistant to large amounts of ultraviolet radiation and also thinner glass thickness. In addition, there are also reflective mirror lenses on the market. This type has good light blocking ability but is not effective against UV rays. Note – Choose sunglasses with large lenses that fit perfectly to your face, and wrap around your eyes to better block out the sun. – Never look directly at the sun, even when wearing sunglasses to avoid chronic eye diseases. – Some types of contact lenses are also UV resistant but do not cover the eyes. So, you should still use sunglasses for full protection.

Two patients with corneal patient. Photo: BV. Information from Hue Central Hospital said that recently, under the direction of Prof. Dr. Pham Nhu Hiep – Director of Hue Central Hospital, the Hospital’s Eye Center has conducted corneal transplant surgery for 2 diseases. benevolent corneal donor in Gia Lai. Before that, when receiving information from the National Organ Transplant Coordination Center about the case of a patient from Gia Lai who wishes to donate cornea, the physician of the Eye Center and the Organ Transplant Center, Hue Central Hospital went to visit the patient. After studying the feelings and aspirations of the corneal donor, the doctors returned to the hospital to conduct examination and selected the 2 most suitable patients from the long list of patients waiting for corneal transplant. When the corneal donor took the last breath, the physician of Hue Central Hospital took cornea and performed the transplant immediately for the ready patient. The first is a 43-year-old female patient in Quang Ninh district, Quang Binh. This patient with necrotic corneal ulceration that leads to perforation without early corneal transplantation is at higher risk of intraocular infection and eye damage. Thanks to the timely corneal transplant, the patient has preserved his eyes and restored his eyesight and can see within a distance of 3m. If the postoperative treatment results are good, the patient’s vision will surely increase much. The second person to receive a corneal transplant is a 74-year-old male patient residing in Huong Thuy, Thua Thien Hue. 2 eyes with corneal scarring for many years with both eyes vision can only distinguish light and dark. After a week of surgery, the patient’s vision was partially restored, he was able to walk and see everything within a distance of 2 meters. The patient’s foresight will be well restored in the future.

Milia is hidden deep under the skin, the sebum accumulates to create small tumors on the surface of the skin.

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Milia is hidden deep under the skin, the sebum that accumulates to create small growths on the surface of the skin that you cannot remove. Milia usually appears around the skin in the eyes, 2 cheeks, under the chin …

At first, the milia will be a small white color, then it will grow gradually and can spread all over the face and can not be controlled without early and proper treatment. Depending on the skin condition and the health of each person, milia appears in a different state, mainly based on age.

The cause of milia

Due to the excess of the glue under the epidermis (this glue functions to make the skin morphology) or due to the lack of minerals in the skin, it changes the structure of the skin cells, which creates wrinkles under the skin. In addition, the unscientific living regime, often staying up late, smoking a lot of cigarettes and drinking alcohol are also the causes of milia.

Milia usually emerges around the eyes, nose, sometimes spreads to the forehead, neck, chest, back … Although it is not inflamed, irritable, painful, does not affect the eyes, but causes great loss of aesthetics, leaving a burden. In psychology.

Cure milia with garlic

Fresh garlic is used in folklore as a “fairy” remedy that can cure many diseases, and is effective in treating milia to beautify the skin.

Fresh garlic is used in folklore as a “fairy” remedy that can cure many diseases, and is effective in treating milia to beautify the skin. So do you know how to process garlic to treat milia properly? The following article will guide you with the “simple as a basket” garlic milia recipe and notes when it comes to safe practice at home.

Way 1 : Fresh garlic juice: Fresh garlic juice is the easiest way to do it. You just need to take 1 clove of purple garlic, peel it and smash it. Continue to take a cotton swab (small tip like a needle) to absorb the juice and use to gently dab on the bumps. Close the eyes and relax for about 30 minutes (so that the tear gas does not enter the cornea) then rinse with cool water. Persistently perform this garlic acne treatment 2-3 times / week.

Method 2 : Garlic + lemon juice: Lemon contains a lot of citric acid, if combined with the active ingredient allicin in garlic, it will create a very powerful active ingredient that is able to remove dead skin cells and inhibit the spread of acne. especially milia. How to treat milia with this garlic is very simple, you just need to mix 3 drops of lemon juice with 3 drops of garlic juice. Rinse the eye skin thoroughly with warm water and then dab the mixture evenly to create pimples. Leave it on for about 20 minutes, then rinse it off with cold water.

Method 3 : Garlic in vinegar: The process of making garlic in vinegar can be more complicated, but it’s the friendliest and least damaging way to the skin. With this method, you only need to peel 100g of fresh garlic and then soak it with 150ml of vinegar (pure). Leave it on for about 2-3 months before it can be used as usual. Note that only dab on milia should not be applied to other healthy skin areas.

Notes on treating milia at home with garlic

The way to treat milia around the eyes with garlic is simple and cost-effective, but this method can cause the skin of your eyes to wear out. Not only that, but the garlic gas can penetrate the cornea, making your eyes feel stinging. This condition, if prolonged, will seriously affect eyesight, so you must adhere to the following precautions when doing home remedies with garlic.

Only dab the garlic juice on the affected area. Be sure to use a cotton swab or small soft object (just like a toothpick) to evenly dab the garlic juice without spreading the garlic juice to other skin areas.

When performing milia treatment around the eyes with garlic, do not sit in the wind, do not apply too close to the eyelids. After you finish applying, you should close your eyes and relax. About 30 minutes later, open your eyes and rinse with cold water.

For the method of using fresh garlic, you must smash the garlic so that the Allicin compound is released. At the same time, garlic juice must be used immediately after beating to take effect, the longer it is left, the more oxidized it will be.

Do not apply garlic acne treatment too many times a day because garlic can cause the skin of your eyes to wear out. According to dermatologists, you should only use garlic for the treatment every 2 days.