The Eye Is An Extension Of The Human Body

Were included 82 eyes of 49 patients, 32 (69%) females and 17 (31%) males. The mean patient age was 33 +/- 7.4 years (range: 21 to 48 years). Mean follow up was 4.8 years (range 9 to 1 year). The mean anterior chamber depth was 3.2mm (range 2.8 to 3.67mm). Were implanted 42 Artisan IOL and 40 Artiflex IOL with a mean power of -11.1D

Gibson’s and Gregory’s theories of perception both suggest that eye-retina is important for perception. The both believe that without eye-retina, a person will not be able to see. This is a common view of both of the theories of perception. The idea is supported by the case of SB. SB was a man who had been blind from birth due to cataracts. When he was 52, he had an operation which restored his sight and hence he could see. Thus, this case has shown the importance of eye-retina for things to be perceived. And therefore, supports both of theories of perception which eye-retina is essential for perception.

After being shown a picture of an elephant they eye will take the light that is reflected from the object and it will enter the eye through the pupil. Then the light will be focused by the cornea and the lens to form a sharp image of the elephant in the retina. The retina is the network of neurons that cover the back of the eye and contains the visual receptors for a person vision. The visual receptors are made up of cones and rods that contain light sensitive chemicals called visual pigments. Visual pigments reacht to light and cause a triggered electrical signals to occur. These electrical signals will then flow through a network of neurons and this network of neurons is what makes up a persons retina. After the flow through the network of neurons occurs the electrical signals will emerge from the back of the eye in the area

If humans can restore the full sight to a blind person what can they do to a person who is not blind and is capable of normal sight. The possibilities are endless as many things can be done and many doctors are foreshadowing them as possibilities. A future where having bionic eyes would make you superhuman? How? Well, light comes in different wavelengths and humans can only see the visible spectrum made of colored light. If a bionic eye could let us see the entire electromagnetic spectrum, from radio waves to gamma waves we’d be able to “see” heat, identify types of gases by sight, and even look through walls. In a future of humans with a computer in their eyes bionic eyes will be an ongoing topic of the future. With a camera as an eye, humans will be able to do things like: zoom in and out like a camera lens, have UV vision, record what we see, and even automatically be able to sync it to the net with our Wi-Fi connected eyes. This is all just speculation but there’s no denying that this type of technology as innovative as it is, is going to turn science fiction into reality one day. Having bionic eyes will open up a broad array of applications in multiple fields such as studying microbes without having to carry all the equipment needed to see under the microscope, soldiers will be able to detect mines in a field, airports will be able to make their security stronger and more secure as

Retinitis pigmentosa is a group of inheritable diseases that is characterized by gradual deterioration of the photoreceptors in the retina. The photoreceptor cells in the retina, rod cells, are light sensitive cells that are able to sense low levels of light. The frequency of retinitis pigmentosa is one in four thousand births (Deng et al., 2015; Fahim et al., 2012; Haddad et al., 2016; Shu et al., 2012) People affected by retinitis pigmentosa will typically exhibit symptoms of night-blindness first, and this will precede a loss in the patient’s visual acuity field that starts from the outer edge and gradually moves inward resulting in a much smaller visual field and loss of peripheral vision, also known as tunnel vision (Haddad et al., 2016).

Retinitis Pigmentosa (RP) is one of such currently untreatable causes of blindness. RP, along with Age Related Macular Degeneration (AMD) are amongst the more frequent causes of blindness in the developed world (Greenwald 2009), while RP itself is the leading cause of inherited blindness (Palanker 2004).

Her family noticed that she here right eye didn’t open all the way up. Holly was born with a cataract that made the vision look faded and try to process the image in the brain. Her family agreed to remove it as early as possible. This is important because it will stun the connection between the eye and brain. Even one or two months without full vision can effect a childs brain development. After surgery an immediate difference can be seen. The reaction is explained as being brought into the world again Holly will have to wear a contact for the rest of her life in the right eye. Holly’s left eye will have to be covered for five years to strengthen the right eye. The eye after years will be a good fully functioning

As humans, we don't always see with our eyes, but often with our imagination (Grunwald, 2016). Often times as people we never realize how useful our vision really is to us. You really don't think about something like that until it would actual happen to you. Throughout this essay, you will learn how the body is affected by Macular Degeneration (MD). Different signs and symptoms, as well as the etiology of MD, will be discussed. In the following, diagnosis tests and treatments may also be listed in order to help others who would like to know more about MD. Not to mention, you will learn the incidence and progression of MD. Furthermore, information though agencies and associations, as well as new research about MD will be given.

The development of the human body is an exquisite process that involves numerous complicated processes for even the smallest of body parts, including the eyes. The eyes are an extraordinarily complex organ capable of gathering information through refracted light and sending it the brain to assemble a picture. They provide the ability to see and follow a moving object and the capability to tell an approximate distance of an object. When light passes through the cornea and iris pupil, at the anterior portion of the eye, it is focused by the lens onto the retina at the back of the eye. Photoreceptor cells, which are present in the retina, detect the light and send information to interneurons which begin to sort out the information. This information is then sent to ganglion cells which transmits the final information to the brain (Sowden 199). Because the eyes have such complicated and exquisite processes, the likelihood of developmental errors occurring are possible. A large number of these developmental errors lead to congenital defects and abnormalities that effect the individual’s eye sight. Some of these defects and abnormalities can cause serious diseases and syndromes that effect more than just the eyes, but also neurological processes, facial dimorphisms, growth failure, tracheal development, and genitalia anomalies.

Phase 2: Retina is placed in the back side of the eye and it has to „collaborate“ with cornea and lens in order to provide an image for

Added pressure on the jugular vein can increase the intraocular pressure of the eye. These two treatments only delay the end result of blindness. Surgery depends on the potential of vision. Performing a delicate endolaser cyclophatocoagulation (ECPC) laser surgery may reduce the chances of blindness. A probe is inserted into the eye where a beam selectively destroys some of the fluid production cells. The lens is removed prior to surgery and then at the end of surgery replaced with an artificial lens. ECPC is very complicated and performed by few veterinarians. Permanently blind dogs can have a prosthetic eyeball implanted in the eye socket to remove the painful pressure of the affected eye, and give the dog a better cosmetic look. If an implant is not wanted, an injection of drugs into the eye may be done. This drug kills the fluid producing cells and helps reduce intraocular

Results: The study included 40 eyes of 21 patients. All patients completed at least 6 months

Preißler et al. (2013) state that, amputees with strong PLP showed less volume gain in areas belonging to the visual stream (pg.2).” Interestingly, from here arises the link between the use of the prosthesis, volume of visual cortical grey matter, and the reduction in severity of PLP. Another interesting finding stated in the article was that prosthetic use and muscle training further decreased the severity of PLP and the types of prosthetics used might influence PLP recovery as

of society. In a Neuron article they pointed out that “Performance at this time is most severely

This imaging system allows the surgeon to see an enhanced 3-dimensional view of the operative field and it provides direct eye-hand-instrument alignment and natural depth perception. This is possible through the use of a dual lens endoscope with two high-resolution cameras.