The Eye

Labeled Human Eye Diagram The human eye is the very important organ as it gives the sense of sight to see the world around us. It detects bright light or dim light but it cannot sense the object in the absence of light. What we see is called the light. Light passes through the cornea, pupil and lens before hitting the retina. PARTS OF THE EYE  The  outer part called cornea is the clear bulging surface in front of the eye.  The sclera is the white part of the eye. The iris  is the colorful part of the eye. It decides the amount of light passes through the pupil and thus controls the size of the pupil. The pupil is the black circle in the center of the iris. The pupils will get smaller when the light shines near them and they'll open wider when the light is gone. The vitreous body is the biggest part of the eye and is also responsible for the shape of the eye. The lens , an inner part of the eye lies behind the iris. It focuses light onto the retina and chan...

Eye strain is not avoidable in today's life because all our work is locked around the technology.While watching television, computer or while studying or reading books for hours together eye strain will occurs naturally. Read -----> 10 Tips to reduce eye strain 7 Simple Tips for Eye Care 1.Rotate your eyes to relax. 2.Do simple eye exercise by moving eye ball to extreme right and left. 3.Hold pencil at arm's length and keep your eyes focused on it.Then slowing bring it to the nose.It helps to prevent blurred vision. 4.Wash eyes with cold water for sparkling eyes. 5.For Puffy eyes grate the potato and apply it on your closed lids for 20 minutes and relax. 6.Follow 20-20-20 Rule for healthy eyes.Between 20 minutes of work take a break for your eyes for 20 seconds and look at the objects at 20 feet distance. 7.Healthy diet is vital for good eyesight. Vitamin A rich diet - papaya,carrot.egg,fish and milk. Vitamin C rich diet - Orange,Lemon and other ...

Eye is the delicate and the most important part of our body.Because of poor diet and lifestyle, majority of population is day by day increasingly suffering from eye problems.Proper eye care,taking regular eye check up,eating nutrient rich foods are very important for maintaining healthy eyes. Vegetables,Antioxidants and Eye Health 1.Green leafy vegetables are packed with plenty of antioxidants like  Lutein & Zeaxanthin , Vitamin A & Beta Carotene  and  Vitamin E . +   Lutein & Zeaxanthin   protect the eyes from damage, reduces the risk of cataracts and macular degeneration. 2.  Romaine lettuce, Broccoli, Zucchini, Garden  peas and Brussels sprouts are packed with antioxidants  like  Lutein & Zeaxanthin 3. Carrots  contain antioxidants like  Vitamin A & Beta Carotene + Vitamin A & Beta Carotene   protects the eyes against dry eyes,night blindness,strengthens retina. 4...

Eyes are amazing as it helps us to see the outside world.Eating fruits and vegetables keeps our eyes healthy.Naturally, fruits and vegetables are packed with many vitamins and minerals which is required for our over all good health. Eating right amount of fruits and vegetables in our daily diet reduces the risk of night blindness,a ge related macular degeneration ,  cataracts   and other eye diseases . Vitamin C, Vitamin E, and Vitamin A(and beta carotene) are dietary antioxidants.These antioxidants protects our body against diseases,keeps our cells and tissues healthy, strengthens blood vessels  and boost our immune system. Beta carotene and vitamin A protects the eyes against dry eyes,night blindness,strengthens retina. Citrus fruits are good source of  vitamin C. They contain  flavonoids which protects eyes from cataract and macular degeneration. eg: grapes,cherries,oranges Lutein & Zeaxanthin are antioxidants which  protect the ey...

An  eye chart  is used  to measure the eye's ability to see details at near and far distances.It is used to evaluate eyesight. The  eye tests usually involve reading letters or looking at symbols of different sizes on an eye chart. Usually, each eye is tested by itself. And then both eyes may be tested together, with and without corrective lenses (if you wear them).   Types of eye charts include the  logMAR chart ,  Snellen chart ,  Landolt C , and the  Lea test . The Snellen Chart is the commonly used eye chart  by the doctors. It has standard size letters and is normally viewed at a test distance of 20 feet. It is used   to determine your visual acuity  ."Visual" refers to the clarity or clearness of the vision and the word "acuity" comes from the Latin "acuitas" meaning sharpness.   Eye Charts are available for very young children or illiterate adults that do not require letter recognition. One version use...

Learn how the eye works from the beautiful video  produced by the Student Recruitment, Admissions and International Development Division at The University of Manchester . Eye Diagram UPFVTFMSTRVW This Video gives you a clear idea about the anatomy of the human eye,parts of the Eye and its functions,details about how the eye works and Interesting facts and quiz questions about eyes.

Glaucoma is a  condition of high pressure within the eyeball causing gradual loss of sight. According to the World Health Organization, Glaucoma is considered as the second leading cause of blindness (behind cataracts)in the global level . In simple words, Glaucoma is a complicated eye disease caused by high eye pressure, and if left untreated causes permanent vision loss or blindness.It is called the “Sneak Thief of Sight” or “Silent Thief of Sight”. How the Eye works? Eyes The eye works very much like an old-style camera. In the camera, the light comes in through the shutter, is focused by the lens, falls onto the film and them we take it to be processed. In the eye, light comes in through the cornea and pupil. It is focused by the lens, falling onto the film in the eye (the retina) and then goes, via the optic nerve (the nerve of sight), to the brain (the processor) for developing. The shape of the eye is achieved through the circulation of a clear fluid (aqu...

Video games helps to improve vision. Playing action video games can boost an aspect of adult vision previously thought to be fixed, a US study shows. Researchers found playing the games improved the ability to notice even very small changes in shades of grey against a uniform background. "Contrast sensitivity" is important in situations such as driving at night, or in conditions of poor visibility. The Nature Neuroscience study raises the possibility of using a video game training regime to improve vision. Contrast sensitivity is often one of the first aspects of vision to be affected by ageing.  It can also be affected by conditions such as amblyopia, known as "lazy eye". Improving contrast sensitivity usually requires physical changes in eye optics, through eye surgery, glasses or contact lenses. A team from the University of Rochester studied expert video game players playing games involving aiming and shooting at virtual targets. They found ...

Up to 90% of school leavers in major Asian cities are suffering from myopia(short-sightedness)and scientists are blaming their academic lifestyles. Natural light exposure is just one potential factor in a child's eyesight. The time children spend outdoors could be linked to a reduced risk of being short-sighted, research suggests.   Researchers say the "extraordinary rise" in the problem is being caused by students working very hard in school and missing out on outdoor light. They also found a strong link between short-sightedness and close reading. The work of Professor Ian Morgan, from the  Australian National University in Canberra , and colleagues, suggest the condition - also known as myopia - is due more to environmental than genetic factors. The scientists told  The Lancet medical journal  that up to one in five of these students could experience severe visual impairment and even blindness. According to the research, the problem is being caused...

Diwali is a festival of lights that brings light into our lives.  Eye care is essential during Diwali .Dr Rupesh Agarwal, an emergency eye care specialist at the L V Prasad Eye Institute states "Fire cracker-related eye injuries could cause serious and irreparable damage to one's vision. Adults and Children can prevent firecracker injury to their eyes by playing safely with firecrackers". Many people can get chronic eye infections, the repercussions of cracker burning at the time of Diwali can be so serious sometimes that some people end-up getting either partial loss of vision or even permanent loss of vision. Thus, it is extremely important that you should take care of your eyes on Diwali. One should take adequate caution at the time of burning crackers. The  smoke that is produced from the burning of cracker can harm one’s eyes and can cause many kinds of infections such as dryness in the eyes, Meibomian gland dysfunction and so on, primarily in people who...

Ophthalmology  is the branch of medicine that specializes in the diagnosis and the treatment of eye diseases.   In other words , Ophthalmology  is the branch of medicine that deals with the anatomy, physiology and diseases of the eye.  The word  ophthalmology  comes from the Greek roots " ophthalmos "  meaning  eye  and  logos  meaning  word ,  thought,  or  discourse ; ophthalmology literally means "the science of eyes".  Who  is an  ophthalmologist? An  ophthalmologist  is a specialist in medical and surgical eye problems. Since ophthalmologists perform operations on eyes, they are considered to be both surgical and medical specialists. In simple words,   Ophthalmologists   specialize in the medical and surgical treatment of eye disorders, vision measurements for glasses (refraction), eye muscle exercises (o...