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... cheek and tail served as reference and ground leads, respectively. A single-flash stimulus was presented in order of increasing luminance across a 4-log unit stimulus range (-3.8 to +1 log cd sec/m2) with an interstimulus interval of 1 minute in duration. The body temperature of anesthetized rats wa ...
... cheek and tail served as reference and ground leads, respectively. A single-flash stimulus was presented in order of increasing luminance across a 4-log unit stimulus range (-3.8 to +1 log cd sec/m2) with an interstimulus interval of 1 minute in duration. The body temperature of anesthetized rats wa ...
Distance perception within near visual space
... can give information about an object's absolute distance only through its distance relative to other objects for which the absolute distance is known. Perceived size, brightness, texture, motion parallax, and retinal vertical disparity are other potential cues which can also be used for absolute-dis ...
... can give information about an object's absolute distance only through its distance relative to other objects for which the absolute distance is known. Perceived size, brightness, texture, motion parallax, and retinal vertical disparity are other potential cues which can also be used for absolute-dis ...
The Importance of Eyes in Infant Gaze
... "agent" has turned (e.g., Johnson, Slaughter, &Carey, 1998), they should also look whether the adult's eyes were open or closed, because it was the same person, with the same history of interactive behavior, who turned in both groups. If, however, infants understand that the eyes are relevant for co ...
... "agent" has turned (e.g., Johnson, Slaughter, &Carey, 1998), they should also look whether the adult's eyes were open or closed, because it was the same person, with the same history of interactive behavior, who turned in both groups. If, however, infants understand that the eyes are relevant for co ...
Emotional tears and NGf - Archives Italiennes de Biologie
... at the meeting. This problem remains open because it lies at the intersection of disciplines, escaping the notice of ophthalmologists who focus on the more immediate problems of tear production, replacement, and ocular pathology, not interpersonal communication. Now that you are thinking about a lif ...
... at the meeting. This problem remains open because it lies at the intersection of disciplines, escaping the notice of ophthalmologists who focus on the more immediate problems of tear production, replacement, and ocular pathology, not interpersonal communication. Now that you are thinking about a lif ...
Oman Eye Study 2005: prevalence and determinants of glaucoma
... of the eye was reevaluated. The perception of projected light rays in 4 quadrants was tested for any eye with vision < 6/60. The ophthalmologists examined eyes under relatively low illumination conditions. The anterior segment was examined with the help of well-focused torchlight. The eye was anesth ...
... of the eye was reevaluated. The perception of projected light rays in 4 quadrants was tested for any eye with vision < 6/60. The ophthalmologists examined eyes under relatively low illumination conditions. The anterior segment was examined with the help of well-focused torchlight. The eye was anesth ...
Changes in central corneal thickness after congenital cataract surgery
... postoperatively in aphakic eyes but not in pseudophakic eyes. The mechanism of CCT increase after congenital cataract extraction remains a matter of speculation. In normal eyes without cataract, the central cornea is thicker at birth, rapidly decreases in thickness during the first few months of lif ...
... postoperatively in aphakic eyes but not in pseudophakic eyes. The mechanism of CCT increase after congenital cataract extraction remains a matter of speculation. In normal eyes without cataract, the central cornea is thicker at birth, rapidly decreases in thickness during the first few months of lif ...
Kymionis GD, Tsiklis N, Pallikaris AI, Diakonis V
... in surface ablations, such as the application of mitomycinC and the development of Epi-LASIK, there is still an increasing concern regarding the postoperative pain, low rate of visual recovery, and need for prolonged use of corticosteroids. We found that superficial LASIK after ultrathin flap creati ...
... in surface ablations, such as the application of mitomycinC and the development of Epi-LASIK, there is still an increasing concern regarding the postoperative pain, low rate of visual recovery, and need for prolonged use of corticosteroids. We found that superficial LASIK after ultrathin flap creati ...
Surgical Management of Neovascular Glaucoma
... the retina and of the ciliary body. This eliminates the need for a clear view into the eye through the pupil. The endoscope provides a clear view around the opacities and avoids having to stretch and dilate a rubeotic pupil. I use the 23-gauge vitrectomy system (Alcon). The conjunctiva is rotated an ...
... the retina and of the ciliary body. This eliminates the need for a clear view into the eye through the pupil. The endoscope provides a clear view around the opacities and avoids having to stretch and dilate a rubeotic pupil. I use the 23-gauge vitrectomy system (Alcon). The conjunctiva is rotated an ...
ocular disease
... laser treatment). I am seeing new blood vessels growth at the optic disc (around your retina/iris) which shouldn't be there. It tells me that your eyes are not getting oxygen and your system is creating new vessels in response to that. You are now at very high risk for visual loss. In order to prese ...
... laser treatment). I am seeing new blood vessels growth at the optic disc (around your retina/iris) which shouldn't be there. It tells me that your eyes are not getting oxygen and your system is creating new vessels in response to that. You are now at very high risk for visual loss. In order to prese ...
Optical Coherence Tomography for Ophthalmologic
... specificity), and clinical validity. Current literature consists primarily of assessments of qualitative and quantitative imaging and detection capabilities. Technically, the Visante OCT has the ability to create high-resolution images of the anterior eye segment. Studies indicate that the Visante O ...
... specificity), and clinical validity. Current literature consists primarily of assessments of qualitative and quantitative imaging and detection capabilities. Technically, the Visante OCT has the ability to create high-resolution images of the anterior eye segment. Studies indicate that the Visante O ...
Drug transport by the blood-aqueous humor barrier of the eye
... Although there are numerous drug transporters that interact with organic electrolytes that display a net negative charge (organic anions), a net positive charge (organic cations), or both negative and positive charges (zwitterions) at physiological pH, most of our understanding of drug transport by ...
... Although there are numerous drug transporters that interact with organic electrolytes that display a net negative charge (organic anions), a net positive charge (organic cations), or both negative and positive charges (zwitterions) at physiological pH, most of our understanding of drug transport by ...
Download CV
... of epithelial integrity and stromal degeneration. J Proteomics 2013;87:122-31. Lackner E-M, Matthaei M, Meng H, Ardjomand N, Eberhart CG, Jun AS*. Design and analysis of keratoconus tissue microarrays. Cornea 2014;33:49-55. Srikumaran D, Son, H-S, Doyle JJ, Muñoz B, Stark WJ, McCally RL, Jun AS*. Co ...
... of epithelial integrity and stromal degeneration. J Proteomics 2013;87:122-31. Lackner E-M, Matthaei M, Meng H, Ardjomand N, Eberhart CG, Jun AS*. Design and analysis of keratoconus tissue microarrays. Cornea 2014;33:49-55. Srikumaran D, Son, H-S, Doyle JJ, Muñoz B, Stark WJ, McCally RL, Jun AS*. Co ...
this PDF file
... Central retinal vein occlusion (CRVO) spans a clinical spectrum from mild alteration in venous flow apparent as an impending vein occlusion to a very severe predominantly occlusive ischemic CRVO. Based on the quantum of ischemia or capillary non-perfusion in the standard ETDRS fields, the Central re ...
... Central retinal vein occlusion (CRVO) spans a clinical spectrum from mild alteration in venous flow apparent as an impending vein occlusion to a very severe predominantly occlusive ischemic CRVO. Based on the quantum of ischemia or capillary non-perfusion in the standard ETDRS fields, the Central re ...
Fusing Iris and Conjunctival Vasculature: Ocular Biometrics in the Visible Spectrum
... The science of recognizing individuals based on their unique physical or behavioral traits such as iris, fingerprints, gait and voice, etc. is termed as biometrics [1][2][3]. In this work, we consider the problem of combining iris and conjunctival vasculature paaterns (evident on the white of the ey ...
... The science of recognizing individuals based on their unique physical or behavioral traits such as iris, fingerprints, gait and voice, etc. is termed as biometrics [1][2][3]. In this work, we consider the problem of combining iris and conjunctival vasculature paaterns (evident on the white of the ey ...
Validation of the Estimation of Corneal Aberrations From
... at the plane of best focus. Unlike the laser ray tracing measurements (where the reference was the pupil center), corneal topography typically uses the corneal reflex for alignment. The system does not allow acquisition of out-of-focus images, so images with centration errors of more than about 0.25 ...
... at the plane of best focus. Unlike the laser ray tracing measurements (where the reference was the pupil center), corneal topography typically uses the corneal reflex for alignment. The system does not allow acquisition of out-of-focus images, so images with centration errors of more than about 0.25 ...
Retinal fixation point location in the foveal avascular zone.
... To illustrate, assume that, as in recent clinical trials,6"9 retinal lesions up to 200 ^m from the FAZ center are treated with burns which overlap the lesion by up to 100+ jum. Furthermore, grant that our data form a representative sample of the population for the location of the retinal point of fi ...
... To illustrate, assume that, as in recent clinical trials,6"9 retinal lesions up to 200 ^m from the FAZ center are treated with burns which overlap the lesion by up to 100+ jum. Furthermore, grant that our data form a representative sample of the population for the location of the retinal point of fi ...
History of the Microscope
... But it was Antony van Leeuwenhoek who became the first man to make and use a real microscope. Leeuwenhoek ground and polished a small glass ball into a lens with a magnification of 270X, and used this lens to make the world's first practical microscope. ...
... But it was Antony van Leeuwenhoek who became the first man to make and use a real microscope. Leeuwenhoek ground and polished a small glass ball into a lens with a magnification of 270X, and used this lens to make the world's first practical microscope. ...
Vision Services Corporate Medical Policy
... medical benefit only when a disease condition of the eye is found or reasonably suspected. See attachment I for a list of eligible diagnoses. A screening test for defective vision in conjunction with a preventive medicine evaluation and management service when done in accordance with current America ...
... medical benefit only when a disease condition of the eye is found or reasonably suspected. See attachment I for a list of eligible diagnoses. A screening test for defective vision in conjunction with a preventive medicine evaluation and management service when done in accordance with current America ...
Altered Accuracy of Saccadic Eye Movements in Children with Fetal
... Background: Prenatal exposure to alcohol is a major, preventable cause of neurobehavioral dysfunction in children worldwide. The measurement and quantification of saccadic eye movements is a powerful tool for assessing sensory, motor, and cognitive function. The quality of the motor process of an eye ...
... Background: Prenatal exposure to alcohol is a major, preventable cause of neurobehavioral dysfunction in children worldwide. The measurement and quantification of saccadic eye movements is a powerful tool for assessing sensory, motor, and cognitive function. The quality of the motor process of an eye ...
Co-Managing the Glaucoma Suspect in primary care
... care Key learning points Glaucoma is a progressive disease in which optic neuropathy occurs in association with visual field loss. If untreated, glaucoma may cause progressive blindness. The most important recognised risk factor is high intraocular pressure (IOP normal range10-21mmHg). For every ...
... care Key learning points Glaucoma is a progressive disease in which optic neuropathy occurs in association with visual field loss. If untreated, glaucoma may cause progressive blindness. The most important recognised risk factor is high intraocular pressure (IOP normal range10-21mmHg). For every ...
An intervention trial on efficacy of atropine and multi
... with multi-focal glasses, multi-focal glasses, and single vision spectacles. Each subject was followed for at least eighteen months. These results report on the 188 patients available for the follow-up. Results: The mean progression of myopia in atropine with multi-focal glasses group (0.41 D) was s ...
... with multi-focal glasses, multi-focal glasses, and single vision spectacles. Each subject was followed for at least eighteen months. These results report on the 188 patients available for the follow-up. Results: The mean progression of myopia in atropine with multi-focal glasses group (0.41 D) was s ...
J Neurophys
... vector averaging is not the only motion-integration algorithm that has been found in the brain. For neurons in area MT, which integrate motion signals over space, a variety of center–surround mechanisms have been described (Allman et al. 1985; Born et al. 2000). One type of MT neurons responds best ...
... vector averaging is not the only motion-integration algorithm that has been found in the brain. For neurons in area MT, which integrate motion signals over space, a variety of center–surround mechanisms have been described (Allman et al. 1985; Born et al. 2000). One type of MT neurons responds best ...
Clinical evaluation of the Crystalens AT
... Luminance and testing distance at each clinical site was standardized. The reading card was consistently held at 32 inches for measurement of intermediate vision or 16 inches for measurement of near vision. Recently, there has been much discussion regarding measurement of speed reading. This was not ...
... Luminance and testing distance at each clinical site was standardized. The reading card was consistently held at 32 inches for measurement of intermediate vision or 16 inches for measurement of near vision. Recently, there has been much discussion regarding measurement of speed reading. This was not ...
school integration for patients with amblyopia
... learn valuable lessons about accepting differences among children. While in most instances, children may not need to modify their school activities while patching, sometimes adjustments such as sitting in the front row of the classroom will be necessary [19]. A pilot study performed in the USA sugge ...
... learn valuable lessons about accepting differences among children. While in most instances, children may not need to modify their school activities while patching, sometimes adjustments such as sitting in the front row of the classroom will be necessary [19]. A pilot study performed in the USA sugge ...
Human eye
The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.