Interocular alignment following visual deprivation in the cat.
... Subjects. The interocular alignment of 75 cats was examined in these experiments which took place over a period of 4 years. Twenty-six normal cats served as control subjects against which data from experimental animals were compared. Twenty-nine cats were studied on emergence into the light after ha ...
... Subjects. The interocular alignment of 75 cats was examined in these experiments which took place over a period of 4 years. Twenty-six normal cats served as control subjects against which data from experimental animals were compared. Twenty-nine cats were studied on emergence into the light after ha ...
Diabetic Retinopathy A Team Approach to Screening, Referral, and Treatment The Scope of Diabetic Retinopathy
... retinopathy affects about one half of all people with diabetes mellitus and is the leading cause of vision loss and new onset blindness in Americans 2064 years of age.[2] Fortunately, several prospective clinical trials provide excellent data on the natural course of diabetic retinopathy and treat ...
... retinopathy affects about one half of all people with diabetes mellitus and is the leading cause of vision loss and new onset blindness in Americans 2064 years of age.[2] Fortunately, several prospective clinical trials provide excellent data on the natural course of diabetic retinopathy and treat ...
Closed angle glaucoma
... drops, and for most people with glaucoma, this is all the treatment they will ever need. But, these drops will need to be taken long term or for life. The eye drops work by either reducing the amount of aqueous fluid that your eye produces, or by helping the aqueous fluid drain away more quickly. Yo ...
... drops, and for most people with glaucoma, this is all the treatment they will ever need. But, these drops will need to be taken long term or for life. The eye drops work by either reducing the amount of aqueous fluid that your eye produces, or by helping the aqueous fluid drain away more quickly. Yo ...
Closed angle glaucoma
... drops, and for most people with glaucoma, this is all the treatment they will ever need. But, these drops will need to be taken long term or for life. The eye drops work by either reducing the amount of aqueous fluid that your eye produces, or by helping the aqueous fluid drain away more quickly. Yo ...
... drops, and for most people with glaucoma, this is all the treatment they will ever need. But, these drops will need to be taken long term or for life. The eye drops work by either reducing the amount of aqueous fluid that your eye produces, or by helping the aqueous fluid drain away more quickly. Yo ...
Understanding Glaucoma
... ophthalmologist to suggest an alternative drop. Preservative-free eye drops may be an option if you’re sensitive to any of the preservatives added to the drops. It’s also very important to attend all your appointments at the eye clinic to make sure your eye pressure stays stable. This is because cha ...
... ophthalmologist to suggest an alternative drop. Preservative-free eye drops may be an option if you’re sensitive to any of the preservatives added to the drops. It’s also very important to attend all your appointments at the eye clinic to make sure your eye pressure stays stable. This is because cha ...
Age
... because previous studies have suggested an association with lung cancer and beta carotene in smokers. • There were no benefits from treatment shown in the AREDS for patients with no AMD (Category 1) and early AMD (Category 2). ...
... because previous studies have suggested an association with lung cancer and beta carotene in smokers. • There were no benefits from treatment shown in the AREDS for patients with no AMD (Category 1) and early AMD (Category 2). ...
Detachment of ciliary body--anatomical and physical
... 1. In the three eyes studied, the attachments of the uvea to the sclera by suprachoroidal lamellae were found to be very scant in the region of the ciliary body, somewhat more dense at the ora serrata, apparently absent from the ora to just posterior to the equator, and increasingly dense from there ...
... 1. In the three eyes studied, the attachments of the uvea to the sclera by suprachoroidal lamellae were found to be very scant in the region of the ciliary body, somewhat more dense at the ora serrata, apparently absent from the ora to just posterior to the equator, and increasingly dense from there ...
Q - Topcon
... scans through the maculae and optic discs, but compares them against a normative database, has been a boon to our ability to screen for and to detect pathology. Where a scanned eye falls inside or outside the normal range of the database it can help give valuable and reliable guidance in cases where ...
... scans through the maculae and optic discs, but compares them against a normative database, has been a boon to our ability to screen for and to detect pathology. Where a scanned eye falls inside or outside the normal range of the database it can help give valuable and reliable guidance in cases where ...
ocular disease - Review of Optometry
... This is done to provide the most up-to-date management of patients with various conditions and to indicate when patient referral is appropriate. In many cases, the management may necessitate treatment from a specialist or subspecialist. This manuscript does not recommend that any doctor practice bey ...
... This is done to provide the most up-to-date management of patients with various conditions and to indicate when patient referral is appropriate. In many cases, the management may necessitate treatment from a specialist or subspecialist. This manuscript does not recommend that any doctor practice bey ...
Viscoelastic levitation of posteriorly dislocated intraocular lenses
... the dislocated IOL was fixated to the iris with a McCannel suture around the loose haptic. There were no intraoperative complications, specifically intraocular hemorrhage. One day after surgery, there were no cases in which the IOP increased more than 5 mm Hg compared with preoperatively (Table 1). ...
... the dislocated IOL was fixated to the iris with a McCannel suture around the loose haptic. There were no intraoperative complications, specifically intraocular hemorrhage. One day after surgery, there were no cases in which the IOP increased more than 5 mm Hg compared with preoperatively (Table 1). ...
Glaucoma - Vance Thompson Vision
... important it is to wake up each morning to clear vision. Because improved sight means more than seeing your best. It means being your best. With more than 60,000 procedures and nearly 100 years of combined experience in eye care and refractive surgery, the team at Vance Thompson Vision is committed ...
... important it is to wake up each morning to clear vision. Because improved sight means more than seeing your best. It means being your best. With more than 60,000 procedures and nearly 100 years of combined experience in eye care and refractive surgery, the team at Vance Thompson Vision is committed ...
Wide-angle chromatic aberration corrector for the human eye
... quality of the corrector in combination with the wide-angle eye model. Fig. 2 shows the theoretical residual chromatic refractive error of the corrector + eye system as provided by ZEMAX after optimization. It can be compared with that for the naked wide-angle eye model and also with the residual c ...
... quality of the corrector in combination with the wide-angle eye model. Fig. 2 shows the theoretical residual chromatic refractive error of the corrector + eye system as provided by ZEMAX after optimization. It can be compared with that for the naked wide-angle eye model and also with the residual c ...
Pediatric Strabismus - Database Reserved Area
... this frontal migration resulted in increasing overlap of each eye’s visual field and conferred the advantage of stereopsis (depth perception). In mammals, inputs from the two eyes converge on binocular neurons in the visual cortex, which are thought to be the neural substrate for stereopsis. Maturat ...
... this frontal migration resulted in increasing overlap of each eye’s visual field and conferred the advantage of stereopsis (depth perception). In mammals, inputs from the two eyes converge on binocular neurons in the visual cortex, which are thought to be the neural substrate for stereopsis. Maturat ...
Accommodation after an implantable collamer lens implantation in
... the amplitude of accommodation declined initially, then gradually recovered because of the ...
... the amplitude of accommodation declined initially, then gradually recovered because of the ...
Document
... receptor. Such eyes are found throughout the lower phyla, and are used by planarians, for example, for simple phototaxis towards or away from lighter regions of the environment. There are only two known instances where these eyes are used for other purposes: the large pinhole eyes of Nautilus mediat ...
... receptor. Such eyes are found throughout the lower phyla, and are used by planarians, for example, for simple phototaxis towards or away from lighter regions of the environment. There are only two known instances where these eyes are used for other purposes: the large pinhole eyes of Nautilus mediat ...
Foveal Visual Strategy during Self-Motion Is Independent of Spatial
... periphery (Paige and Tomko, 1991; McHenry and Angelaki, 2000; Angelaki and Hess, 2001; Hess and Angelaki, 2003). However, all such studies showing that humans and monkeys use a foveal visual strategy during self-motion have used conditions of steady fixation in which the locus of spatial attention a ...
... periphery (Paige and Tomko, 1991; McHenry and Angelaki, 2000; Angelaki and Hess, 2001; Hess and Angelaki, 2003). However, all such studies showing that humans and monkeys use a foveal visual strategy during self-motion have used conditions of steady fixation in which the locus of spatial attention a ...
Curriculum
... surfaces allow the light rays to be refracted so that they converge to form an image. The nodal point (N) in the diagram is the focal point where the nearly straight rays of light meet after passing through the biconvex lens. The light continues through the vitreous humor, the clear gel that makes u ...
... surfaces allow the light rays to be refracted so that they converge to form an image. The nodal point (N) in the diagram is the focal point where the nearly straight rays of light meet after passing through the biconvex lens. The light continues through the vitreous humor, the clear gel that makes u ...
cataract series - VISION 2020 e
... surgery have significant improvement in many quality-of-life parameters, including community, and home activities, mental health, driving and life satisfaction. In the typical post operative regimen the patients are given antibiotic and steroid eyedrops with cycloplegics for month and are all examin ...
... surgery have significant improvement in many quality-of-life parameters, including community, and home activities, mental health, driving and life satisfaction. In the typical post operative regimen the patients are given antibiotic and steroid eyedrops with cycloplegics for month and are all examin ...
Academic paper: Persistent hyperplastic primary vitreous: Diagnosis
... left eye. The horizontal comeal diameter was 11.0 mm in the left eye. The right eye had a corneal diameter of 10.0 mm and underwent a lensectomy and anterior vitrectomy for an anterior PHPV. The child's mother had bilateral retinoblastoma, and 2 of her siblings also had retinoblastoma. Hara and coll ...
... left eye. The horizontal comeal diameter was 11.0 mm in the left eye. The right eye had a corneal diameter of 10.0 mm and underwent a lensectomy and anterior vitrectomy for an anterior PHPV. The child's mother had bilateral retinoblastoma, and 2 of her siblings also had retinoblastoma. Hara and coll ...
Large-scale integration in tablet screens for blue-light
... et al., 2013; Walker, Lane, Ousler, & Abelson, 2010). These symptoms may not be detected in adolescents since difficulty focusing and DED are not common in young people. To date, there has been no ophthalmic assessment of adults using blue-light control technology at night. Therefore, in the present ...
... et al., 2013; Walker, Lane, Ousler, & Abelson, 2010). These symptoms may not be detected in adolescents since difficulty focusing and DED are not common in young people. To date, there has been no ophthalmic assessment of adults using blue-light control technology at night. Therefore, in the present ...
- City Research Online
... Glaucoma is a progressive optic neuropathy in which structural damage is evident at the optic nerve head (ONH) and the retinal nerve fibre layer (RNFL). This structural damage results in the loss of visual function during the progression of the disease. Glaucoma is clinically evaluated by various te ...
... Glaucoma is a progressive optic neuropathy in which structural damage is evident at the optic nerve head (ONH) and the retinal nerve fibre layer (RNFL). This structural damage results in the loss of visual function during the progression of the disease. Glaucoma is clinically evaluated by various te ...
Uveal compartmentalization in the hamster eye revealed by
... (2). After all methods, sections of the angular aqueous plexus and episcleral vessels were sampled for the presence of tracer, denoting that conventional outflow pathways had functioned during the infusion procedures. Intravascular perfusions were performed by placing a 22 guage butterfly needle int ...
... (2). After all methods, sections of the angular aqueous plexus and episcleral vessels were sampled for the presence of tracer, denoting that conventional outflow pathways had functioned during the infusion procedures. Intravascular perfusions were performed by placing a 22 guage butterfly needle int ...
Globe Tenting - American Journal of Neuroradiology
... The normal slightly redundant optic nerve must straighten and stretch in response to the acute anterior globe displacement. Increases in the optic nerve length, optic nerve ratio, and degree of proptosis are all indices of axial globe displacement and were generally proportional to the severity of g ...
... The normal slightly redundant optic nerve must straighten and stretch in response to the acute anterior globe displacement. Increases in the optic nerve length, optic nerve ratio, and degree of proptosis are all indices of axial globe displacement and were generally proportional to the severity of g ...
NON-TRAUMATIC RETINAL DETACHMENT IN A 60-YEAR
... contact between the detached retina and retinal base, since surgery is the mainstay of treatment. Keywords: Ocular, ultrasonography, nontraumatic, retinal detachment All Correspondence to; ...
... contact between the detached retina and retinal base, since surgery is the mainstay of treatment. Keywords: Ocular, ultrasonography, nontraumatic, retinal detachment All Correspondence to; ...
clinical practice guideline for the management of cataract
... Two longitudinal studies looking into the outcomes of cataract surgery have measured degree of improvement in visual impairment as measured by visual acuity and improvement in functional impairment and quality of life as measured by VF-14, self-reported trouble with vision and the Sickness Impact Pr ...
... Two longitudinal studies looking into the outcomes of cataract surgery have measured degree of improvement in visual impairment as measured by visual acuity and improvement in functional impairment and quality of life as measured by VF-14, self-reported trouble with vision and the Sickness Impact Pr ...
Visual impairment due to intracranial pressure
Spaceflight induced visual impairment is hypothesized to be a result of increased intracranial pressure. The study of visual changes and intracranial pressure (ICP) in astronauts on long-duration flights is a relatively recent topic of interest to Space Medicine professionals. Although reported signs and symptoms have not appeared to be severe enough to cause blindness in the near term, long term consequences of chronically elevated intracranial pressure is unknown.NASA has reported that fifteen long-duration male astronauts (45–55 years of age) have experienced confirmed visual and anatomical changes during or after long-duration flights. Optic disc edema, globe flattening, choroidal folds, hyperopic shifts and an increased intracranial pressure have been documented in these astronauts. Some individuals experienced transient changes post-flight while others have reported persistent changes with varying degrees of severity.Although the exact cause is not known at this time, it is suspected that microgravity-induced cephalad fluid shift and comparable physiological changes play a significant role in these changes. Other contributing factors may include pockets of increased CO2 and an increase in sodium intake. It seems unlikely that resistive or aerobic exercise are contributing factors, but they may be potential countermeasures to reduce intraocular pressure (IOP) or intracranial pressure (ICP) in-flight.