Fishes with Eye Shine: Functional Morphology of Guanine Type
... may occur as part of the retinornotor responses to light and dark adaptation. The choroidal tapetum is located in the vitread region of the choroid, and in most cases the c ~ y s t aarrangement l is such that it forms a specular reflector. In many retinas with a choroidal tapeturn, the retinal pigme ...
... may occur as part of the retinornotor responses to light and dark adaptation. The choroidal tapetum is located in the vitread region of the choroid, and in most cases the c ~ y s t aarrangement l is such that it forms a specular reflector. In many retinas with a choroidal tapeturn, the retinal pigme ...
Observations on the effects of form deprivation on the
... growth associated with form deprivation.10 It is important to determine the source of this variability, as form-deprived monkeys could potentially serve as a useful animal model in investigations of the mechanisms which regulate the emmetropization process and which when disrupted produce anomalies ...
... growth associated with form deprivation.10 It is important to determine the source of this variability, as form-deprived monkeys could potentially serve as a useful animal model in investigations of the mechanisms which regulate the emmetropization process and which when disrupted produce anomalies ...
LASIK: Practical Pearls
... medications have been administered, the conjunctiva may be erythematous, swollen, and loose. This can result in questionable suction with the patient interface cone, but, more important, it may allow loose conjunctiva to herniate through the edge of the cone and under the applanating glass surface, ...
... medications have been administered, the conjunctiva may be erythematous, swollen, and loose. This can result in questionable suction with the patient interface cone, but, more important, it may allow loose conjunctiva to herniate through the edge of the cone and under the applanating glass surface, ...
Endogenous endophthalmitis due to Roseomonas mucosa
... [6–8], more so in immunocompromised patients. There are case reports of other organisms such as Pseudomonas aeruginosa [9], Streptococcus viridans [10], and Klebsiella pneumoniae [11] causing subretinal abscess. The bacterial genus Roseomonas was first reported by Rihs et al. [12] in 1993 though the ...
... [6–8], more so in immunocompromised patients. There are case reports of other organisms such as Pseudomonas aeruginosa [9], Streptococcus viridans [10], and Klebsiella pneumoniae [11] causing subretinal abscess. The bacterial genus Roseomonas was first reported by Rihs et al. [12] in 1993 though the ...
Diagnosis of Pupillary Disorders
... lem is that the test is done in a darkened room. Ideally, one should use an infrared video system to examine pupillary movements in the dark, i.e., after turning the light stimulus off. A practical alternative is to use a separate, weak light source to illuminate both eyes at a tangential angle from ...
... lem is that the test is done in a darkened room. Ideally, one should use an infrared video system to examine pupillary movements in the dark, i.e., after turning the light stimulus off. A practical alternative is to use a separate, weak light source to illuminate both eyes at a tangential angle from ...
TEXT BOOK OF DISEASES OF THE EYE
... the palpebral conjunctiva and with a chalazion curette the contents are removed and the walls thoroughly scraped. Vertical incision is made to avoid cutting ducts of neighbouting meibomian glands and to prevent Entropion. Injection of cortisone into the chalazion can be used as an ...
... the palpebral conjunctiva and with a chalazion curette the contents are removed and the walls thoroughly scraped. Vertical incision is made to avoid cutting ducts of neighbouting meibomian glands and to prevent Entropion. Injection of cortisone into the chalazion can be used as an ...
Dr.-Soroudi-s-Book - Soroudi Advanced LASIK
... of people who almost always “abuse” their contact lenses. They are truly “legally blind” without their contacts yet they don’t even have a pair of glasses to their name: so they wear their contacts until they literally have to “yank” them out of their eyes just to replace them with a new one immedia ...
... of people who almost always “abuse” their contact lenses. They are truly “legally blind” without their contacts yet they don’t even have a pair of glasses to their name: so they wear their contacts until they literally have to “yank” them out of their eyes just to replace them with a new one immedia ...
THE LACRIMATION REFLEX
... Toxic neuritis of the ophthalmic division of the 5th nerve.-A male, age 55 years, consulted me because his right eye had turned dim a few days previously. There was no pain, but the eye watered a good deal. Upon examination it was found that vision was reduced to counting fingers at 3ft. The eye was ...
... Toxic neuritis of the ophthalmic division of the 5th nerve.-A male, age 55 years, consulted me because his right eye had turned dim a few days previously. There was no pain, but the eye watered a good deal. Upon examination it was found that vision was reduced to counting fingers at 3ft. The eye was ...
Management of Tearing in Adults
... tube, which connects the globe surface directly to the middle meatus of the nose via an ostium created by a dacryocystorhinostomy. The Lester Jones' tube is a tube of about 15 millimetres in length and a few millimetres in width, and is hollow. It allows tears to run into the nose through it. When i ...
... tube, which connects the globe surface directly to the middle meatus of the nose via an ostium created by a dacryocystorhinostomy. The Lester Jones' tube is a tube of about 15 millimetres in length and a few millimetres in width, and is hollow. It allows tears to run into the nose through it. When i ...
Contact Lens Burial Simulation Study
... simulation; Contact lenses; Exhumation; Murder; Abaroa; Inversion marks ...
... simulation; Contact lenses; Exhumation; Murder; Abaroa; Inversion marks ...
437 OECD GUIDELINES FOR THE TESTING OF CHEMICALS OECD/OCDE
... generally obtained from cattle older than eight years, while those with a horizontal diameter < 28.5 mm and CCT <900 µm are generally obtained from cattle less than five years old (14). For this reason, eyes from cattle greater than 60 months old are not typically used. Eyes from cattle less than 12 ...
... generally obtained from cattle older than eight years, while those with a horizontal diameter < 28.5 mm and CCT <900 µm are generally obtained from cattle less than five years old (14). For this reason, eyes from cattle greater than 60 months old are not typically used. Eyes from cattle less than 12 ...
transformation - Centre for Eye Research Australia
... researchers contributed over 250 scientific papers in peer-reviewed journals and more than a third (34%) of their grant applications were successful, well above the national average for grant success. Staff and student numbers also grew, as did overall income. Publicity for CERA’s work included over ...
... researchers contributed over 250 scientific papers in peer-reviewed journals and more than a third (34%) of their grant applications were successful, well above the national average for grant success. Staff and student numbers also grew, as did overall income. Publicity for CERA’s work included over ...
Age related Macular Degeneration
... waste (outer rod and cone segments) from photoreceptors, and controls metabolism for the retina.8 The retina has high concentrations of oxygen, polyunsaturated fatty acids, and photosensitizers. These substances, combined with light exposure, make the retina susceptible to oxidative stress.9 How thi ...
... waste (outer rod and cone segments) from photoreceptors, and controls metabolism for the retina.8 The retina has high concentrations of oxygen, polyunsaturated fatty acids, and photosensitizers. These substances, combined with light exposure, make the retina susceptible to oxidative stress.9 How thi ...
The Secret to Gentler DSAEK Grafts
... the DSAEK insertion instruments scleral tunnel incision approximately face of the donor lamellae to assist that are either available in the United 4.5 mm in width. A chamber main- him in confirming the appropriate oritainer and a paracentesis for forceps entation of the tissue in the recipient State ...
... the DSAEK insertion instruments scleral tunnel incision approximately face of the donor lamellae to assist that are either available in the United 4.5 mm in width. A chamber main- him in confirming the appropriate oritainer and a paracentesis for forceps entation of the tissue in the recipient State ...
Decrease in Rate of Myopia Progression with a
... visit were included in the analysis of progression of myopia. In the contact lens group, 15 children discontinued from baseline before 6 months primarily because of lens discomfort and loss to follow-up; therefore, information on the progression of myopia was not available for these children. Data f ...
... visit were included in the analysis of progression of myopia. In the contact lens group, 15 children discontinued from baseline before 6 months primarily because of lens discomfort and loss to follow-up; therefore, information on the progression of myopia was not available for these children. Data f ...
TRAnS-SCLERAL OUTFLOW
... the connective tissue in the ciliary muscle and remodelling the extracellular matrix by increasing the secretion of matrix metalloproteinases. Among surgical procedures, cyclodialysis increases both the rate of uveo-scleral (by a factor of four) and trans-scleral outflow. However, the procedure has ...
... the connective tissue in the ciliary muscle and remodelling the extracellular matrix by increasing the secretion of matrix metalloproteinases. Among surgical procedures, cyclodialysis increases both the rate of uveo-scleral (by a factor of four) and trans-scleral outflow. However, the procedure has ...
Diabetic Retinopathy
... retinopathy. One is called focal laser and this is the technique used to control diabetic macular edema. It is performed in one session, is generally painless, and can take up to 2 to 3 months to see the desired “drying” effect. The other type of laser treatment is called panretinal (or “scatter”) p ...
... retinopathy. One is called focal laser and this is the technique used to control diabetic macular edema. It is performed in one session, is generally painless, and can take up to 2 to 3 months to see the desired “drying” effect. The other type of laser treatment is called panretinal (or “scatter”) p ...
Cloudy central corneal dystrophy
... structure and indistinct margins. These areas were larger and more numerous in the posterior part of the stroma and became smaller and less frequent in the anterior part. In some cases the anterior layers of the stroma were unaffected but in others the grey patches reached Bowman's membrane. The cor ...
... structure and indistinct margins. These areas were larger and more numerous in the posterior part of the stroma and became smaller and less frequent in the anterior part. In some cases the anterior layers of the stroma were unaffected but in others the grey patches reached Bowman's membrane. The cor ...
Title: An uncharacteristic case of central serous chorioretinopathy
... IV. Diagnosis and discussion -Elaborate on the condition: Central serous chorioretinopathy is a disorder of the RPE/choroiocapillaris that causes sensory detachment of the macula. The patient experiences a decrease in central vision and may notice metamorphopsia. The typical patient is a young to mi ...
... IV. Diagnosis and discussion -Elaborate on the condition: Central serous chorioretinopathy is a disorder of the RPE/choroiocapillaris that causes sensory detachment of the macula. The patient experiences a decrease in central vision and may notice metamorphopsia. The typical patient is a young to mi ...
Mature Bone in the Eye: A Case of Choroidal Osteoma
... our patient, appear as early lacy hyperfluorescence surrounded with late staining.4,5 Indocyanine green angiography shows early hypofluorescence due to the thick osteoma with late tumor staining.11,12 Bscan ultrasound shows slightly elevated densely hyperechoic concave choroidal mass with prominent ...
... our patient, appear as early lacy hyperfluorescence surrounded with late staining.4,5 Indocyanine green angiography shows early hypofluorescence due to the thick osteoma with late tumor staining.11,12 Bscan ultrasound shows slightly elevated densely hyperechoic concave choroidal mass with prominent ...
Visual standards for driving in Europe
... licence in Europe (60% of the European population).1 Policymakers have a responsibility to provide a framework or legislation to enable safe driving conditions for both drivers and other citizens. Eye care clinicians need to be able to counsel patients about the visual criteria for driving, and corr ...
... licence in Europe (60% of the European population).1 Policymakers have a responsibility to provide a framework or legislation to enable safe driving conditions for both drivers and other citizens. Eye care clinicians need to be able to counsel patients about the visual criteria for driving, and corr ...
MONOCULAR DIPLOPIA OCCURRING IN CASES OF SQUINT
... that this phenomenon can be ignored and he concerns himself solely with the binocular diplopia which was at times crossed and at others uncrossed. Gaudenzi, in 1897, showed that in cases of squint with a false correspondence the central impression of the eye could be projected to two different posit ...
... that this phenomenon can be ignored and he concerns himself solely with the binocular diplopia which was at times crossed and at others uncrossed. Gaudenzi, in 1897, showed that in cases of squint with a false correspondence the central impression of the eye could be projected to two different posit ...
ocular albinism - British Journal of Ophthalmology
... distribution of visual acuities of affected males between different pedigrees. The condition is not progressive and we found no deterioration of visual acuity with age. Near vision is good: almost 60% could read N5 without an optical reading aid. Nystagmus was found in all cases except one, although ...
... distribution of visual acuities of affected males between different pedigrees. The condition is not progressive and we found no deterioration of visual acuity with age. Near vision is good: almost 60% could read N5 without an optical reading aid. Nystagmus was found in all cases except one, although ...
EXODEVIATION 1.Pseudoexotropia 2.Exophoria 3.Congenital
... Exophoria is a latent tendency for the eyes to deviate. Deviation of the visual axis results from the fusion interruption, which is not able to maintain binocular vision any longer. Factors predisposing to decompensated exophoria are listed below: anisometropia. transient cover of one eye emot ...
... Exophoria is a latent tendency for the eyes to deviate. Deviation of the visual axis results from the fusion interruption, which is not able to maintain binocular vision any longer. Factors predisposing to decompensated exophoria are listed below: anisometropia. transient cover of one eye emot ...
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.