25 interesting facts about eyes
Eyes are one of the most important organs of a body. The feeling of existence in this beautiful world can be given only through eyes. Eyes are the organ of vision which connects us to the environment. Keep your vision healthy by eating dark leafy green vegetable, fish, citrus fruits, maintaining weight, quitting smoking, wearing protective glasses etc. Healthy eyes are beneficial to your overall health.
Eyesight is the most important senses which has to be protected to avoid blindness, loss of vision, prevent from cataract, glaucoma etc. Eye is the only organ which helps us to differentiate the shapes, colors, light etc. Eyes also take a lead role in expressing our thoughts and it also helps in reflecting our mood to a better extent.
Disease like diabetes, hypertension, cholesterol, thyroid, cancer, tumors, autoimmune disorders etc can be detected by an eye test. Hence it is advisable to carry out an eye exam once in every two year to keep your eyes healthy. Eye is one of the complex parts of the body where only 1/6th part of the eye is exposed to the human world. Brain has a major role when it comes to eye sight. Eyes give you a better depth perception and it is also a fact that eyes gives you a wider vision of our surrounding.
Let us go through some interesting facts about eyes;
25 interesting facts about eyes:
- Eye is one of the fastest healing organs in the body as compared to other parts of the body.
- The cornea is the part of the body that has no blood supply; it gets oxygen directly through the air.
- The eye is the fastest muscle in the body. Extra ocular muscles are the fastest muscle in the eye which helps the eye to move in different direction. Intra ocular muscles are also a muscle in the eye which controls the expansion and contraction of the iris.
- You actually see with your brain and not with your eyes. It is a fact that our eyes look but our brain sees. The optic nerve carries the information received from the retina to the brain. Then the brain selects and translates the information it receives from the eye into something that we actually see.
- Smoking leads to loss of vision or blindness. Smoking can severely harm you by diseases like cataract, glaucoma, dry eye syndrome & it can also harm your color vision etc. A study says, smoking 20 cigarettes in a day can cause blindness.
- Newborn babies are color blind. All babies color vision start developing gradually after a week of their birth. The sense of color will be normal over 6 or 8 months, at which the babies can see the world as we can.
- Newborn babies don’t cry with tears. They cannot produce tears because the tear ducts will not be developed. The tear ducts of all babies will certainly start developing between two or three months old.
- Blinking of eyes is the most common function of our body. Blinking of eyes generally helps in cleaning, moisturizing and also protecting our eyes from irritants from the surface of the eyes. A blink typically lasts 100-150 milliseconds.On an average you blink 14-17 times every minute.
- The frequency of blinking your eyes is higher while talking compared to the blinking rate while reading.
- The length of the eye of a newborn is about 16.5mm, while that of a full grown adult is about 24mm. Human eye grows about one-third in size.
- Your chances of having cataract is 90% as you grow older. By the age of 60 more than half of the elder populations have chances of getting cataracts. You may also get cataracts in your early 40’s.
- Chronic dry eyes make your eyes excessively watery.
- The average human eyeball weighs around one ounce i.e. 28.34 gm
- Most of the people always tend to close your eyes while sneezing. This is because your nose and eyes are linked by cranial nerves.
- A human eye can even see a candle flame flickering up to 30-48 km away. Human vision falls far short of the horizon caused by the curvature of the Earth, which occurs at around 5km. In the very darkest conditions, the human eye can see stars at magnitude 6.5 or greater.
- 40% of all nerve fibers connected to the brain are linked to the retina. More of our neurons are dedicated to vision than the other four senses combined.
- The brain can see images that last for just 13 milliseconds. 90% of information transmitted to the brain is visual.
- Our eyes can register 36,000 visual messages per hour. We can get the sense of a visual scene in less than 1/10 of a second.
- You must rest your eyes every 20 minutes, close them, and then look at something at least 20 feet away for twenty seconds to preserve a good eyesight.
- Each eye can hold about 7 micro liters of fluid.
- As the tears are draining down from your eyes, it starts mixing with snot in your nose and coming out your nostrils. Therefore, your nose gets runny when you cry as the tears drain into your nasal passages.
- 90% of people around the world have brown eyes. Green is the rarest eye color (less than 2%). The other different eye colors are black, blue, gray and hazel eyes.
- The color of your eyes depends on how much of the pigment melanin you have in your iris. The more pigment you have, the darker your eyes will be. Blue, grey, and green eyes are lighter because they have less melanin in the iris. Newborn babies don’t have melanin in their eyes, so they begin life with blue or almost colorless eyes.
- There are 107 million cells in a single eye that are sensitive to light. Rods and cones are the two types of cells which are responsible for vision at low light levels and higher light level respectively.
- The eye’s lens is quicker than any camera’s. Human eyes can adjust focus almost instantly without any noticeable lag.
Thus, healthy eyes can keep your brain healthy which improves the overall quality of your life. The above mentioned are the 25 interesting facts about eyes. It is extremely important to include eye check-up with your regular health check-ups. To keep your eyes healthy it is most advisable to have a detailed eye check-up which can detect many common eye diseases and also can be treated at the right time.
One of the recommended vision clinics in Chennai is Smart Vision and Diabetes Clinic. They deal in detailed Eye Check-Up, Optical, Contact Lens Clinic, Cataract, Cornea and Refractive Surgeries, Uvea, Glaucoma and Retina Services, etc.