PATHOPHYSIOLOGY Age- related macular degeneration (AMD)‚ a chronic‚ progressive disorder of the retina‚ is the most common cause of blindness in individuals over the age of 60. The macula is the part of the retina which provides high resolution color vision (Redmond &While 2008). As the macula degenerates‚ individuals lose their central vision and color vision. There are two types of macular degeneration: wet‚ or choroidal neovascularization and dry‚ or nonneovascular . Dry AMD is the more
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Imagine a camera that is composed with 2 million working parts‚ and stored up to 24 million images around you throughout life span. This incredible amazing camera is our eyes. The human eyes are one of the most interesting medical field that are being studied‚ as well as one of the most complex organs that has many features. The eyes are the organs of sight and one of our special senses. Vision is our one of our dominant sense: 70% of all the sensory receptors in the body are in the eyes‚ and almost
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causes visual impairment‚ often temporary‚ usually in one eye[1][2] When the disorder is active it is characterized by leakage of fluid under the retina that has a propensity to accumulate under the central macula. This results in blurred or distorted vision (metamorphopsia). A blurred or gray spot in the central visual field is common when the retina is detached. Reduced visual acuity may persist after the fluid has disappeared.[1] The disease is considered idiopathic but mostly affects white males
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detachments like proliferative vitreoretinopathy (PVR)‚ traumatic retinopathy‚ Proliferative diabetic retinopathy (PDR)‚ Cytomegalovirus (CMV) retinitis‚ Giant tears‚ primary use in AIDS – related CMV retinitis and other viral infections affecting the retina. CONTRAINDICATION ? stability Greater ? emulsification due to a Reduced AUROSIL PLUS is contraindicated in patients with known hypersensitivity to silicone oil. In Pseudophakic patients with silicone intraocular lens (silicone oil can chemically
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AP* Practice Test Questions 1. The purpose of the pupil is to (a) focus light on the retina. (b) process color. (c) allow light into the eye. (d) enable night vision. (e) detect specific shapes. 2. Cells that can respond to specific edges‚ lines‚ angles‚ and movements are called (a) rods. (b) cones. (c) ganglion cells. (d) feature detectors. (e) bipolar cells. 3. Signal detection theory is most closely associated with (a) vision. (b) sensory adaptation. (c) absolute thresholds. (d) hearing. (e)
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Characteristics of Gifted Children Very Observant Extremely Curious Intense interests Excellent memory Long attention span Excellent reasoning skills This above average giftedness can be generic or acquired. Mildly gifted (IQ 115-129) Moderately gifted (IQ 130-144) Highly gifted (IQ 145-159) Exceptionally gifted (IQ 160-174) Profoundly gifted (IQ 175+) MENTAL RETARDATION Genetic conditions Problems during pregnancy. Problems at birth. TYPES syndromic intellectual disability
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"lightning-fast moves and shocking electric effects". Pikachurin was initially identified in a microarray analysis of gene expression profiles of the retinas of wild-type and Otx2 knockout mice. A RT-PCR analysis was used to confirm that Otx2 regulates the expression of pikachurin‚ it was known because there was an absence of expression of pikachurin in the Otx2 mice retina‚ so it indicates that Otx2 regulates pikachurin. The localization of pikachurin to synaptic cleft in the photoreceptor ribbon synapse was
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Science and Religion Name : Hiren Ahir TOPIC : Science & Religion Specific purpose : To Understand how science and religion relate with each other INTRODUCTION I The relationship between science and religion has been a classic study of Antiquity since ages which is addressed by Philosophers‚ Theologians‚ scientist and others. II Talking about the difference Science acknowledges reasons and evidence while religion includes
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second cranial nerve and cranial nerve II. the optic nerve is to transfer visual information from the retina to teh vision centres of the brain via electrical impulses. It is made up of ganglionic cells or nerve cells and consists of more than 1 million nerve fibres . Our blind spot is caused by the absence of specialised photosensitive/light-sensitive cells or photoreceptors; the part of the retina where the optic nerve exits the eye. Although the optic nerve is part of the eye‚ it is considered part
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in the inner eyelid where oily secretions are released to help lubricate the eye. A cataract is a clouding of the eye’s natural lens‚ which lies behind the iris and the pupil. The lens works much like a camera lens‚ focusing light onto the retina at the back of the eye. The lens also adjusts the eye’s focus‚ letting us see things clearly both up close and far away. The lens is mostly made of water and protein. The protein is arranged in a precise way that keeps the lens clear and lets light
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