The Eye

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 (aqueous

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 by a

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 (orthoptics), and the prevention of blindness and care of the blind. Ophthalmologists   undertake surgery of the eye, which is usually pe

Lasik (Laser-Assisted in SItu Keratomileusis) is  a type of refractive surgery. In simple term,  Lasik is a laser eye surgery  performed by an ophthalmologist using a laser  for the correction of  myopia ,  hyperopia , and  astigmatism . In other words,  LASIK is considered as an effective remedy for   enhancing the visual abilities of an individual.  LASIK is an  alternative to  eyeglasses  or  contact lenses . Correction of refractive errors using Lasik type of refractive surgery. What is Refraction? The cornea is a part of the eye that helps focus light to create an image on the retina. It works in much the same way that the lens of a camera focuses light to create an image on film. The bending and focusing of light is also known as refraction .  Humans see and focus on objects through retina and cornea where retina acts as a focusing device of a camera. Usually an individual with normal visual abilities has matching retina and cornea as per the size and shape o

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. “ Eyes are delicate and precious ,” says Dr. Andrew Iwach, spokesperson for the American Academy of Ophthalmology (AAO). “ Just a touch of maintenance will keep them going for years.” Tips to reduce eye strain  §   When your eyes are feeling tired or for every 20 to 30 minutes of work,  look at a distant object and blink several times . This will change the focal length of your eyes and helps in better focusing. §   You can  massage your eyelids, the area around your eyes, including the muscles over your temple, upper cheek and eyebrows  once or twice a day, for around 10 seconds each time. The massage will help your muscles relax, stimulate your tear glands as well as reduce your symptoms of eye strain. §  Any focused work means you don’t blin