(KeraRing) and corneal collagen cross- linking
... astigmatism and subsequently developed iatrogenic keratectasia. [13] UV-X led to an arrest and/or even a partial reversal of keratectasia over a postoperative follow-up period of up to 25 months as demonstrated by pre- and postoperative corneal topography and reduction of maximal K-readings. When co ...
... astigmatism and subsequently developed iatrogenic keratectasia. [13] UV-X led to an arrest and/or even a partial reversal of keratectasia over a postoperative follow-up period of up to 25 months as demonstrated by pre- and postoperative corneal topography and reduction of maximal K-readings. When co ...
assessing the drowsiness of drivers
... research disciplines have investigated these problems from different points of view that are not entirely compatible. The distinction between drowsiness and fatigue is discussed further in Section 4.0. 3.2 There have been rapid improvements in our understanding of sleep and its disorders over the pa ...
... research disciplines have investigated these problems from different points of view that are not entirely compatible. The distinction between drowsiness and fatigue is discussed further in Section 4.0. 3.2 There have been rapid improvements in our understanding of sleep and its disorders over the pa ...
Assessing the drowsiness of drivers
... research disciplines have investigated these problems from different points of view that are not entirely compatible. The distinction between drowsiness and fatigue is discussed further in Section 4.0. 3.2 There have been rapid improvements in our understanding of sleep and its disorders over the pa ...
... research disciplines have investigated these problems from different points of view that are not entirely compatible. The distinction between drowsiness and fatigue is discussed further in Section 4.0. 3.2 There have been rapid improvements in our understanding of sleep and its disorders over the pa ...
PDF-1.1M - ScienceCentral
... serum believed to be of maternal origin [12], and less than 5% of the total protein content in HAF is likely to have originated from HAM [6]. Therefore, there is possible that the positive effect of HAF on corneal wound healing might be due to substances from human serum. Human serum contains sever ...
... serum believed to be of maternal origin [12], and less than 5% of the total protein content in HAF is likely to have originated from HAM [6]. Therefore, there is possible that the positive effect of HAF on corneal wound healing might be due to substances from human serum. Human serum contains sever ...
Extended Depth Optical Coherence Tomography for Anterior
... Absorption spectrum in the visible and near infrared wavelength range (Adapted from Hamblin and Demidova, 2009). Axial resolution vs. bandwidth as a function of central wavelength of the light source. Spectral distribution of the light source SLD 371 HP centered at 836nm and with 54nm FWHM (A). Theo ...
... Absorption spectrum in the visible and near infrared wavelength range (Adapted from Hamblin and Demidova, 2009). Axial resolution vs. bandwidth as a function of central wavelength of the light source. Spectral distribution of the light source SLD 371 HP centered at 836nm and with 54nm FWHM (A). Theo ...
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... fulfill the criteria for retinopathy of prematurity (ROP) screening (less than 32 weeks of gestational age and/or 1,500 grams birth weight) but are not found to have ROP. Previous studies have reported rates of ophthalmic disorders as high as 17.6% to 51.5%1-5 in this cohort, which has led to the re ...
... fulfill the criteria for retinopathy of prematurity (ROP) screening (less than 32 weeks of gestational age and/or 1,500 grams birth weight) but are not found to have ROP. Previous studies have reported rates of ophthalmic disorders as high as 17.6% to 51.5%1-5 in this cohort, which has led to the re ...
AN INVESTIGATION INTO THE APPLICATION OF LIGHT SOURCES IN THE
... The research part of this dissertation starts with an overview of the anatomy and geometry of the human eye (Chapter 2). It is followed by a description of glaucoma and the treatment of the disease (Chapter 3). Chapters 2 and 3 are included to enable the reader with limited knowledge of ophthalmolog ...
... The research part of this dissertation starts with an overview of the anatomy and geometry of the human eye (Chapter 2). It is followed by a description of glaucoma and the treatment of the disease (Chapter 3). Chapters 2 and 3 are included to enable the reader with limited knowledge of ophthalmolog ...
common minimum optometry curriculum for india
... INSTRUCTOR IN CHARGE : A post-graduate, a Ph D or MD in physiology, with adequate exposure to the profession of optometry and ophthalmology 1) Course Description: General physiology deals with the entire human anatomy with emphasis on different organ systems, their physiological functions with speci ...
... INSTRUCTOR IN CHARGE : A post-graduate, a Ph D or MD in physiology, with adequate exposure to the profession of optometry and ophthalmology 1) Course Description: General physiology deals with the entire human anatomy with emphasis on different organ systems, their physiological functions with speci ...
Post-LASIK Ectasia
... my experience, errors in a topographer’s computer software can incorrectly diagnose keratoconus in eyes that have undergone previous refractive surgery. The Orbscan I and II topography instruments (Bausch & Lomb, Rochester, NY) measure corneal thickness, topography, and changes in the curvature of t ...
... my experience, errors in a topographer’s computer software can incorrectly diagnose keratoconus in eyes that have undergone previous refractive surgery. The Orbscan I and II topography instruments (Bausch & Lomb, Rochester, NY) measure corneal thickness, topography, and changes in the curvature of t ...
Increased levels of extracellular ATP in glaucomatous retinas
... diadenosine tetraphosphate are present in higher concentrations in the human aqueous humor in cases of acute and highpressure glaucoma, which suggests that these nucleotides participate in the etiology of the disease [12, 13]. Therefore, nucleotides elevated several fold may contribute to the ocular ...
... diadenosine tetraphosphate are present in higher concentrations in the human aqueous humor in cases of acute and highpressure glaucoma, which suggests that these nucleotides participate in the etiology of the disease [12, 13]. Therefore, nucleotides elevated several fold may contribute to the ocular ...
Monte Carlo dosimetry of the eye plaque design brachytherapy
... Dosimetry performed according to the dosimetry protocol published by the American Association of Physicists in Medicine (AAPM) Task Group 43 (TG43) (3,4) is based on the dosimetric characteristics for a single seed, derived in a large, homogeneous water volume. Due to the low energy of the photons ...
... Dosimetry performed according to the dosimetry protocol published by the American Association of Physicists in Medicine (AAPM) Task Group 43 (TG43) (3,4) is based on the dosimetric characteristics for a single seed, derived in a large, homogeneous water volume. Due to the low energy of the photons ...
Binocular disparity can explain the orientation of ocular dominance
... because of limitations on head size, there is pressure to keep the volume of the cortex to a minimum. This implies that wiring, i.e. axons and dendrites, should be as short as possible, while maintaining function. In general, the function of a given cortical circuit specifies the connections between ...
... because of limitations on head size, there is pressure to keep the volume of the cortex to a minimum. This implies that wiring, i.e. axons and dendrites, should be as short as possible, while maintaining function. In general, the function of a given cortical circuit specifies the connections between ...
A Novel 8-mm Schlemm`s Canal Scaffold Reduces Outflow
... placement of implants into SC, bypass this site of most resistance in an attempt to restore ‘‘physiological’’ flow through the normal drainage pathways.7,13–19 The current study evaluated a novel SC microstent (Hydrus Microstent; Ivantis, Inc., Irvine, CA) in human anterior segments (Fig. 1). The mi ...
... placement of implants into SC, bypass this site of most resistance in an attempt to restore ‘‘physiological’’ flow through the normal drainage pathways.7,13–19 The current study evaluated a novel SC microstent (Hydrus Microstent; Ivantis, Inc., Irvine, CA) in human anterior segments (Fig. 1). The mi ...
JAMA July 2016: Full paper on Optometrists vs
... 365.11 (1206 [87.1%]) and was similar for both types of eye care professionals (975 [86.6%] of patients with an ophthalmologistperformed LTP and 231 [89.7%] with an optometristperformed procedure). All enrollees in both groups were observed for up to 72 months. The median time from study eligibility ...
... 365.11 (1206 [87.1%]) and was similar for both types of eye care professionals (975 [86.6%] of patients with an ophthalmologistperformed LTP and 231 [89.7%] with an optometristperformed procedure). All enrollees in both groups were observed for up to 72 months. The median time from study eligibility ...
Lutein, zeaxanthin, and meso-zeaxanthin: The basic and clinical
... away from the center. There is a relatively higher concentration of Müller glial cells in this area. The internal limiting membrane, a basal lamina that separates retina from the vitreous, is thinned out at the fovea. The tightly packed cone cells in the central region, the nearly absent basal lamin ...
... away from the center. There is a relatively higher concentration of Müller glial cells in this area. The internal limiting membrane, a basal lamina that separates retina from the vitreous, is thinned out at the fovea. The tightly packed cone cells in the central region, the nearly absent basal lamin ...
3D-Printed Bionic Eye Created by Bill Earl
... independent random movements at random times. The random ranges are selected so that the tilt servo moves on average about twice a second and the rotate servo moves about once per second. You can speed it up for a somewhat wackier non-stop motion effect, or slow it down for a creepy/sinister evil-ey ...
... independent random movements at random times. The random ranges are selected so that the tilt servo moves on average about twice a second and the rotate servo moves about once per second. You can speed it up for a somewhat wackier non-stop motion effect, or slow it down for a creepy/sinister evil-ey ...
Spectral domain optical coherence tomography imaging of
... when seen, it was wider peripherally than axially. Considering values obtained from all snakes and all (nasal axial, and temporal) sites on the globe at S0 (1 week after completion of a full ecdysis cycle), median (range) spectacular thickness was 80 (55–127) lm and median (range) corneal thickness ...
... when seen, it was wider peripherally than axially. Considering values obtained from all snakes and all (nasal axial, and temporal) sites on the globe at S0 (1 week after completion of a full ecdysis cycle), median (range) spectacular thickness was 80 (55–127) lm and median (range) corneal thickness ...
The Role of Lutein in Eye-Related Disease
... are distinguished from other carotenoid compounds based on the chemical composition of hydroxyl group attachments to their structures [11,12]. These macular pigment compounds, which are responsible for the yellow hue of the macula lutea are concentrated in the outer and inner plexiform layers [13,14 ...
... are distinguished from other carotenoid compounds based on the chemical composition of hydroxyl group attachments to their structures [11,12]. These macular pigment compounds, which are responsible for the yellow hue of the macula lutea are concentrated in the outer and inner plexiform layers [13,14 ...
Intraocular lens tilt and decentration: A concern for contemporary
... clinically-observable visual acuity. Optically, > 0.25D of spherical defocus is required to drop Snellen visual acuity by at least one line. Again, an average tilt and decentration, which are equivalent to 0.12D and 0.17D defocus, would not be sufficient to decrease the vision. Nevertheless, a porti ...
... clinically-observable visual acuity. Optically, > 0.25D of spherical defocus is required to drop Snellen visual acuity by at least one line. Again, an average tilt and decentration, which are equivalent to 0.12D and 0.17D defocus, would not be sufficient to decrease the vision. Nevertheless, a porti ...
PDF - World Wide Journals
... to avoid complications , treatment being started at an earlier stage(14,16,17) .Diabetic eye disease is an end organ response to the effects of the condition on the human system. Diabetic retinopathy is most frequent cause of blindness for working age individuals(18,19). Patients with diabetes not o ...
... to avoid complications , treatment being started at an earlier stage(14,16,17) .Diabetic eye disease is an end organ response to the effects of the condition on the human system. Diabetic retinopathy is most frequent cause of blindness for working age individuals(18,19). Patients with diabetes not o ...
Goldmann Tonometer IFU - Haag
... How long can measuring prisms be used? Due to the large number of variables to be considered (type and concen‑ tration of the disinfectant used, number of patients, handling, etc.) it is practically impossible to provide exact information on how often and/or how long a measuring prism can be used un ...
... How long can measuring prisms be used? Due to the large number of variables to be considered (type and concen‑ tration of the disinfectant used, number of patients, handling, etc.) it is practically impossible to provide exact information on how often and/or how long a measuring prism can be used un ...
nepjoph 2015.indd - Nepalese Journal of Ophthalmology
... without phacoemulsication between 1979 and 1991 yielded good results. However, complication rates were very high and posterior capsule opacication caused decreased visual acuity a few years after surgery (Powe et al., 1994). There was greater surgicallyinduced astigmatism with small incision extra ...
... without phacoemulsication between 1979 and 1991 yielded good results. However, complication rates were very high and posterior capsule opacication caused decreased visual acuity a few years after surgery (Powe et al., 1994). There was greater surgicallyinduced astigmatism with small incision extra ...
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.