Unchanging visions: the effects and limitations of ocular stillness
... (a) Use of naive versus trained subjects. Rolfs has proposed that, whereas contemporary studies typically rely on naive subjects with minimal fixation experience, older studies used to rely on highly trained observers—often the scientists conducting the research—who were able to maintain unusually s ...
... (a) Use of naive versus trained subjects. Rolfs has proposed that, whereas contemporary studies typically rely on naive subjects with minimal fixation experience, older studies used to rely on highly trained observers—often the scientists conducting the research—who were able to maintain unusually s ...
A brushfire in the eye
... surprising that CMV retinitis involving these structures can cause blindness. In some cases, CMV retinitis affects the peripheral retina first, and in this situation the risk of blindness can be decreased by starting treatment before the macula or optic nerve is affected.14 Cataract often occurs aft ...
... surprising that CMV retinitis involving these structures can cause blindness. In some cases, CMV retinitis affects the peripheral retina first, and in this situation the risk of blindness can be decreased by starting treatment before the macula or optic nerve is affected.14 Cataract often occurs aft ...
Handbook of Ocular Disease Management
... The orbital floor has a lower threshold for fracture than the medial wall and other orbital bones and occurs most frequently. When it gives way, the globe and its attached components become unsupported, slipping down into the vacant sinus below, producing visible enophthalmos and gaze-evoked, sympto ...
... The orbital floor has a lower threshold for fracture than the medial wall and other orbital bones and occurs most frequently. When it gives way, the globe and its attached components become unsupported, slipping down into the vacant sinus below, producing visible enophthalmos and gaze-evoked, sympto ...
Find out more about laser refractive surgery.
... The dilation effect generally lasts 4 to 6 hours. It varies from person to person and according to iris pigment. It is not recommended to drive once your pupils have been dilated. Ideally, you should wear sunglasses and arrange to have someone take you home afterwards. The pre-operative evaluation d ...
... The dilation effect generally lasts 4 to 6 hours. It varies from person to person and according to iris pigment. It is not recommended to drive once your pupils have been dilated. Ideally, you should wear sunglasses and arrange to have someone take you home afterwards. The pre-operative evaluation d ...
Acute Inflammation and Loss of Retinal Architecture and Function
... endophthalmitis should be immediate and precise to kill organisms and limit widespread ocular injury. Studies using experimental endophthalmitis models have shown that antibiotics effectively kill intraocular organisms, and anti-inflammatory agents are occasionally successful in suppressing the intra ...
... endophthalmitis should be immediate and precise to kill organisms and limit widespread ocular injury. Studies using experimental endophthalmitis models have shown that antibiotics effectively kill intraocular organisms, and anti-inflammatory agents are occasionally successful in suppressing the intra ...
- Eye, Brain, and Vision
... It would seem that visual deprivation in children has adverse effects of a sort that do not occur at all in adults. Psychologists commonly and quite reasonably attributed the results of their experiments, as well as the clinical results, to a failure of the child to learn to see or, presumably the e ...
... It would seem that visual deprivation in children has adverse effects of a sort that do not occur at all in adults. Psychologists commonly and quite reasonably attributed the results of their experiments, as well as the clinical results, to a failure of the child to learn to see or, presumably the e ...
Calibration of Fundus Images Using Spectral Domain Optical
... We performed two sets of scans for each eye, one centered on the fovea by patient fixation and one centered on the optic nerve using an internal fixation target. The scan protocol for both the macula and optic nerve was a 200 × 200 raster scan (the first number refers to the number of A-scans in eac ...
... We performed two sets of scans for each eye, one centered on the fovea by patient fixation and one centered on the optic nerve using an internal fixation target. The scan protocol for both the macula and optic nerve was a 200 × 200 raster scan (the first number refers to the number of A-scans in eac ...
LASER REFRACTIVE SURGERY
... The dilation effect generally lasts 4 to 6 hours. It varies from person to person and according to iris pigment. It is not recommended to drive once your pupils have been dilated. Ideally, you should wear sunglasses and arrange to have someone take you home afterwards. The pre-operative evaluation d ...
... The dilation effect generally lasts 4 to 6 hours. It varies from person to person and according to iris pigment. It is not recommended to drive once your pupils have been dilated. Ideally, you should wear sunglasses and arrange to have someone take you home afterwards. The pre-operative evaluation d ...
Choroidal neovascularization reduced by
... Results: EndoTAG-1 or LipoSPA significantly reduced CNV size to 15% compared to trehalose controls. The mean CNV area of mice treated with CL was reduced (though not significantly) to about one-half of the value of the trehalose control group. The same was observed for paclitaxel. Thus, the reductio ...
... Results: EndoTAG-1 or LipoSPA significantly reduced CNV size to 15% compared to trehalose controls. The mean CNV area of mice treated with CL was reduced (though not significantly) to about one-half of the value of the trehalose control group. The same was observed for paclitaxel. Thus, the reductio ...
Novel ophthalmic imaging
... Suwon, Korea (the Republic of). Purpose: Visual deprivation is known to induce plasticity of the visual system, which can be observed through alterations in functional brain connectivity (FC) by functional MRI (fMRI). How these FC changes accrue over time in congenital and acquired blindness remains ...
... Suwon, Korea (the Republic of). Purpose: Visual deprivation is known to induce plasticity of the visual system, which can be observed through alterations in functional brain connectivity (FC) by functional MRI (fMRI). How these FC changes accrue over time in congenital and acquired blindness remains ...
Article - Nepalese Journal of Ophthalmology
... with the above refractive correction the visual acuities improved to 6/6 in each eye. Biomicroscopy, intraocular pressures and dilated ophthalmoscopy were all normal. A cover test and assessment of the accommodative facility could not be performed in the undilated state due to visual impairment and ...
... with the above refractive correction the visual acuities improved to 6/6 in each eye. Biomicroscopy, intraocular pressures and dilated ophthalmoscopy were all normal. A cover test and assessment of the accommodative facility could not be performed in the undilated state due to visual impairment and ...
Chapter 3 Glaucoma
... It occurs from blocked aqueous drainage caused by an unidentified dysfunction or microscopic clogging of the trabecular meshwork. This leads to chronically elevated eye pressure, and over many years, gradual vision loss. This differs from closed-angle glaucoma, also called “acute glaucoma,” which oc ...
... It occurs from blocked aqueous drainage caused by an unidentified dysfunction or microscopic clogging of the trabecular meshwork. This leads to chronically elevated eye pressure, and over many years, gradual vision loss. This differs from closed-angle glaucoma, also called “acute glaucoma,” which oc ...
Japanese Journal of Ophthalmology Vol.43 No.6
... “conjunctivalization,” and indicate local or total stem cell dysfunction. It is not clear yet whether stem cell dysfunction is permanent or transient. We try to control any inflammation associated with dry eye, following the patient for at least 3 months. If stem cell function does not recover, then ...
... “conjunctivalization,” and indicate local or total stem cell dysfunction. It is not clear yet whether stem cell dysfunction is permanent or transient. We try to control any inflammation associated with dry eye, following the patient for at least 3 months. If stem cell function does not recover, then ...
Visual Outcomes and Safety of a Refractive Corneal Inlay
... the preoperative evaluation. Central corneal pachymetry ⬎500 μm and endothelial cell density ⬎2000 cells/ mm2 on specular microscopy was necessary in the eye to be operated. Exclusion criteria were irregular astigmatism, pupil diameter ⬍3 mm in photopic conditions, lens opacities that may affect vis ...
... the preoperative evaluation. Central corneal pachymetry ⬎500 μm and endothelial cell density ⬎2000 cells/ mm2 on specular microscopy was necessary in the eye to be operated. Exclusion criteria were irregular astigmatism, pupil diameter ⬍3 mm in photopic conditions, lens opacities that may affect vis ...
Summer 2016 - Dean McGee Eye Institute
... affect patients ranging in treated with radioactive age from infancy to very plaques, which are created late in life. This team approach to by the radiation oncology This edition of InVision service at the Stephenson cancer-related services also provides exciting Cancer Center. These is critical to ...
... affect patients ranging in treated with radioactive age from infancy to very plaques, which are created late in life. This team approach to by the radiation oncology This edition of InVision service at the Stephenson cancer-related services also provides exciting Cancer Center. These is critical to ...
Electroretinographic analysis of retinal function in mice
... segment manufactures molecules called visual pigments which are then stored in the outer segment, whose tip touches the retinal pigment epithelium. Each photoreceptor has one of the four types of visual pigments found in the human retina. The visual pigment known as rhodopsin is found in the rods bu ...
... segment manufactures molecules called visual pigments which are then stored in the outer segment, whose tip touches the retinal pigment epithelium. Each photoreceptor has one of the four types of visual pigments found in the human retina. The visual pigment known as rhodopsin is found in the rods bu ...
Liberating the NHS: Eye Care
... Vision Strategy, Royal National Institute of Blind People (RNIB) and other visual impairment charities estimate that around 50 per cent of this reduced vision is preventable through regular sight testing. At the same time new technologies, e.g. for age-related macular degeneration (AMD), have transf ...
... Vision Strategy, Royal National Institute of Blind People (RNIB) and other visual impairment charities estimate that around 50 per cent of this reduced vision is preventable through regular sight testing. At the same time new technologies, e.g. for age-related macular degeneration (AMD), have transf ...
Glaucoma - Vance Thompson Vision
... surgery. MIGS is usually, but not always, performed at the same time as cataract surgery in patients with mild to moderate glaucoma. The iStent is the smallest medical device ever implanted into humans, and is used to decrease eye pressure by internally bypassing the high resistance portion of the e ...
... surgery. MIGS is usually, but not always, performed at the same time as cataract surgery in patients with mild to moderate glaucoma. The iStent is the smallest medical device ever implanted into humans, and is used to decrease eye pressure by internally bypassing the high resistance portion of the e ...
2011 Edition
... of eye pressure (intraocular pressure [IOP]). Standard treatment of glaucoma involve using medications, laser treatment, and intraocular surgery to lower a patient’s IOP. Sadly, such treatments are not always effective and may have undesirable side effects. In an effort to develop novel treatment st ...
... of eye pressure (intraocular pressure [IOP]). Standard treatment of glaucoma involve using medications, laser treatment, and intraocular surgery to lower a patient’s IOP. Sadly, such treatments are not always effective and may have undesirable side effects. In an effort to develop novel treatment st ...
Stereo vision and strabismus
... offering more alternatives is that patients are less likely to succeed by guessing. Thus, four-alternative tests generally require fewer correct responses to pass a level: two out of three19 or two out of two20 correct responses, as compared with four out of five21 for a two-alternative test. Howeve ...
... offering more alternatives is that patients are less likely to succeed by guessing. Thus, four-alternative tests generally require fewer correct responses to pass a level: two out of three19 or two out of two20 correct responses, as compared with four out of five21 for a two-alternative test. Howeve ...
Ocular Hemorrhages in Neonatal Porcine Eyes from Single, Rapid
... the vitreous base (70% of injured animals had ciliary body hemorrhage, and 11% had peripheral retinal hemorrhage). Hemorrhages were also found in the anterior chamber (11%), vitreous (5%), and optic nerve (disc, 8%; nerve sheath, 57%). Rapid axial head rotations resulted in a higher incidence of int ...
... the vitreous base (70% of injured animals had ciliary body hemorrhage, and 11% had peripheral retinal hemorrhage). Hemorrhages were also found in the anterior chamber (11%), vitreous (5%), and optic nerve (disc, 8%; nerve sheath, 57%). Rapid axial head rotations resulted in a higher incidence of int ...
Glaucoma - Moorfields Eye Hospital
... tax that all charities or Community Amateur Sports Clubs (CASCs) that I donate to will reclaim on my gifts for that tax year. I understand that other taxes such as VAT and Council Tax do not qualify. I understand the charity will reclaim 28p of tax on every £1 that I give up to 5 April 2008 and will ...
... tax that all charities or Community Amateur Sports Clubs (CASCs) that I donate to will reclaim on my gifts for that tax year. I understand that other taxes such as VAT and Council Tax do not qualify. I understand the charity will reclaim 28p of tax on every £1 that I give up to 5 April 2008 and will ...
Iatrogenic Carotid Cavernous Sinus Syndrome
... With no previous history of retinal or cerebral vascular disease, a 61-year-old hypertensive man described 2 spells per day for 3 consecutive days of loss of vision in the temporal half visual field of the right eye lasting about one minute each time. He had been careful to cover each eye separately ...
... With no previous history of retinal or cerebral vascular disease, a 61-year-old hypertensive man described 2 spells per day for 3 consecutive days of loss of vision in the temporal half visual field of the right eye lasting about one minute each time. He had been careful to cover each eye separately ...
Ultrasound biomicroscopy findings in fireworks
... Our series included a group of fireworks casualties sustaining severe blunt injuries due to explosives. A quarter of the cases had extension to BETT zone III. It has already been well described that hyphema harbors other significant injuries in the globe. This is a clinical challenge as the media is ...
... Our series included a group of fireworks casualties sustaining severe blunt injuries due to explosives. A quarter of the cases had extension to BETT zone III. It has already been well described that hyphema harbors other significant injuries in the globe. This is a clinical challenge as the media is ...
Conjunctivitis Common Causes & Pitfalls spotlight 20
... aetiology and self-limiting. Proof of aetiology is usually not necessary. The issue really starts when the patient continues to have symptoms beyond a week and is not really improving. Prolonged conjunctivitis is a difficult condition to deal with due to the lack of diagnostic aids in a general prac ...
... aetiology and self-limiting. Proof of aetiology is usually not necessary. The issue really starts when the patient continues to have symptoms beyond a week and is not really improving. Prolonged conjunctivitis is a difficult condition to deal with due to the lack of diagnostic aids in a general prac ...
Diabetic retinopathy
Diabetic retinopathy ([ˌrɛtnˈɑpəθi]), also known as diabetic eye disease, is when damage occurs to the retina due to diabetes. It can eventually lead to blindness.It is an ocular manifestation of diabetes, a systemic disease, which affects up to 80 percent of all patients who have had diabetes for 10 years or more. Despite these intimidating statistics, research indicates that at least 90% of these new cases could be reduced if there were proper and vigilant treatment and monitoring of the eyes. The longer a person has diabetes, the higher his or her chances of developing diabetic retinopathy. Each year in the United States, diabetic retinopathy accounts for 12% of all new cases of blindness. It is also the leading cause of blindness for people aged 20 to 64 years.