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  • cornea
  • During emmetropization, the refractive elements of the eye-the lens and cornea-grow in a coordinated manner with the sclera, to achieve an axial length where light from distant objects converges to a focal point on the retina. (arvojournals.org)
  • During normal vision, light passes through the cornea, which is the clear covering of the eye, and then through the pupil, which is actually a hole in the colored part of the eye, or the iris. (blausen.com)
  • Like myopia, the condition is caused when the shape of the eyeball or cornea causes the light entering the eye to be improperly focused on the retina. (healthreserve.com)
  • Pigment
  • In this study, Aryan et al used hydrogen peroxide, a highly reactive compound, to induce oxidative stress in human retinal pigment epithelial cells, a type of ocular cell which provides nourishment for the human retina. (eurekalert.org)
  • biomarkers
  • While the hallmark pathological signs of AD, amyloid β-protein (Aβ) plaques and neurofibrillary tangles (NFT) comprising hyperphosphorylated tau (pTau) protein, have long been described in the brain, identification of these characteristic biomarkers in the retina has only recently been reported. (springer.com)
  • Performs
  • Performs vision correction with cutting edge laser technologies and techniques. (hopkinsmedicine.org)
  • The retina performs this "non-image forming" (NIF) visual function through a recently discovered photoreceptive system working in parallel to classical rods and cones. (vision-research.eu)
  • Spectral
  • Spectral transmission measurements of the ocular media show that wavelengths down to 300 nm are transmitted in all the species sampled. (biologists.org)
  • In species with colour vision, even small differences in spectral sensitivity often have dramatic consequences for the animals' behaviour and ecology (e.g. (biologists.org)
  • retinopathy
  • Diabetes, hypertension and retinopathy leads to variations in shape and dimension on retina [1- (scribd.com)
  • Medical imaging of retina can lead to several answers regarding possible treatment of diabetic retinopathy. (scribd.com)
  • foveal
  • If the dark-adaptation curve is plotted for a red stimulus, it is found that it follows the cone path, like that for foveal vision at all wavelengths. (britannica.com)
  • Visual
  • Vision: Visual space is not what it appears to be. (ox.ac.uk)
  • The location of visual objects in the world around us is reconstructed in a complex way from the image falling on the retina. (ox.ac.uk)
  • Studies starting in the 1950s and continuing in the present have attempted to study vision during retinal stabilization-a technique that consists on shifting any and all visual stimuli presented to the eye in such a way as to nullify all concurrent eye movements-providing a tantalizing glimpse of vision in the absence of change. (royalsocietypublishing.org)
  • Yet, the study of ocular instability has a long history-starting with Jurin's 1738 observation [ 1 ] that the 'trembling of the eye' is unremitting-but it has proceeded in spurts and starts, and it is only in recent years that it has become a mainstay of oculomotor and visual neuroscience. (royalsocietypublishing.org)
  • Ocular migraine is a disturbance of the circulation to the occipital lobe of the brain which is the site of visual information processing. (healthtap.com)
  • Accelerated ocular growth, caused by visual deprivation, stimulated the proliferation of CMZ progenitors. (arvojournals.org)
  • these cells use visual cues to control equatorial ocular growth and the proliferation of CMZ cells. (arvojournals.org)
  • The retina also possesses an endogenous clock which drives many essential processes adapting visual function to ambient conditions. (vision-research.eu)
  • Intensive research over the last ten years has revealed the unique nature of these cells, where they are now known to modulate a wide range of NIF visual functions including control of pupillary constriction, sacchade regulation and sleep modulation (4), and are increasingly thought to influence normal vision too (5). (vision-research.eu)
  • Ultraviolet (UV) vision and UV colour patches have been reported in a wide range of taxa and are increasingly appreciated as an integral part of vertebrate visual perception and communication systems. (biologists.org)
  • floaters
  • A 32-year-old pregnant woman at 31 weeks' gestational age was referred to the New England Eye Center for a 1-week history of floaters and decreased vision in the left eye. (healio.com)
  • investigation
  • As we continue to study the disease in the brain, the emerging field of ocular AD warrants further investigation of how the retina may faithfully reflect the neurological disease. (springer.com)
  • conditions
  • Treatment focuses on repairing or reducing the effects of various ocular conditions. (wisegeek.com)
  • Manages and treats simple and advanced conditions involving the retina. (hopkinsmedicine.org)
  • However, cutaneous (skin) melanoma and uveal (ocular) melanoma are distinct conditions which share the same name but are biologically and genetically very different diseases. (rarediseases.org)
  • Vision under these conditions is, moreover, characteristically different from what it is under ordinary daylight conditions. (britannica.com)
  • This feature of vision under these near-threshold, or scotopic, conditions suggests that the cones are effectively blind to weak light stimuli, since they are the only photoreceptors in the fovea. (britannica.com)
  • Secondary
  • This generally depends on the exact location, size of the tumor within the eye, and if the tumor is causing secondary effects to the retina. (rarediseases.org)
  • brain
  • Ocular migraines are a form of migraines that take place in the occipital cortex (part of the brain that interprets/controls vision ). (healthtap.com)
  • skin
  • It is extremely rare for skin melanoma to spread into the eye and nearly unheard of for ocular melanoma to spread to the skin. (rarediseases.org)
  • examine
  • It is now time to examine some of the elementary facts of vision and to relate them to the structure of the retina and, later, to chemically identifiable events. (britannica.com)
  • image
  • To understand the disease stage of the retina, retinal images need to be processed using several image processing techniques. (scribd.com)
  • This is the result of a problem focusing an image on the retina. (healthreserve.com)
  • Thus, in order to obtain best vision, the eye must look away from the screen so that the image of the screen does not fall on the fovea. (britannica.com)
  • In addition to its vital function in image-forming vision, the retina forms the entry point for light information to coordinate the central circadian clock (located in the hypothalamus) with solar time. (vision-research.eu)