paralysis of ocular muscles following
... February 14, 1927. I saw the patient for the first titne. He had a slight but definite paresis of the left external rectus muscle. He had single vision when looking straight ahead. The pupils were equal in size and normal in reactions. February 20, 1927. On re-examining the patient I found no trace ...
... February 14, 1927. I saw the patient for the first titne. He had a slight but definite paresis of the left external rectus muscle. He had single vision when looking straight ahead. The pupils were equal in size and normal in reactions. February 20, 1927. On re-examining the patient I found no trace ...
double-masked three-period crossover investigation of
... ABA had a mean age of 70.1 years and a mean initial lOP of 33.45 mmHg. The figures for group BAB were a mean age of 66.1 years and a mean initial lOP of 33.63 mmHg. There was no significant difference between the two groups in terms of age or initial lOPs. The results of the study are summarised in ...
... ABA had a mean age of 70.1 years and a mean initial lOP of 33.45 mmHg. The figures for group BAB were a mean age of 66.1 years and a mean initial lOP of 33.63 mmHg. There was no significant difference between the two groups in terms of age or initial lOPs. The results of the study are summarised in ...
Carbon Monoxide and the Eye - Association of Schools and
... her furnace had made a loud sound and malfunctioned in the middle of the night prior to initiation of symptoms. She reported that due to the temperature in the house, she had limited her time at home when she could. In fact, she did not spend the night before the examination at home and had only bee ...
... her furnace had made a loud sound and malfunctioned in the middle of the night prior to initiation of symptoms. She reported that due to the temperature in the house, she had limited her time at home when she could. In fact, she did not spend the night before the examination at home and had only bee ...
view pdf - Cornell University
... Acuity was thus predicted to improve as eye aperture decreased from fear to disgust. To compute model values, we set the light stimulus at a constant distance, s, of 6 m. We used an approximate human-eye focal length, f0, of 22 mm, and then modeled three nearsighted conditions of +1.0, +2.0, and +3. ...
... Acuity was thus predicted to improve as eye aperture decreased from fear to disgust. To compute model values, we set the light stimulus at a constant distance, s, of 6 m. We used an approximate human-eye focal length, f0, of 22 mm, and then modeled three nearsighted conditions of +1.0, +2.0, and +3. ...
Glaucoma - Moorfields Eye Hospital
... chronic (slowly-developing) condition in which the eye pressure rises because the drainage channels themselves are not good enough at draining fluid out of the eye. This is not because of a visible obstruction blocking the flow: as the name of this type of glaucoma suggests, the drainage angle remai ...
... chronic (slowly-developing) condition in which the eye pressure rises because the drainage channels themselves are not good enough at draining fluid out of the eye. This is not because of a visible obstruction blocking the flow: as the name of this type of glaucoma suggests, the drainage angle remai ...
Distinctive anatomical and physiological features
... perimetry tests (Humphrey Field Analyser II, Carl Zeiss Meditec). This testing revealed a bilateral ring of reduced visual sensitivity centred at 50 , but no abnormality within the areas of his visual fields that were represented by his visual auras (Supplementary Fig. 1). ...
... perimetry tests (Humphrey Field Analyser II, Carl Zeiss Meditec). This testing revealed a bilateral ring of reduced visual sensitivity centred at 50 , but no abnormality within the areas of his visual fields that were represented by his visual auras (Supplementary Fig. 1). ...
Pathophysiology of Glaucomatous Optic
... blood flow when the perfusion pressure falls, and constrict to reduce the blood flow in arterial hypertension. But since there is a limit to how far the terminal arterioles can constrict or dilate, the autoregulation operates only within a certain critical range of perfusion pressure (Fig. 7); it be ...
... blood flow when the perfusion pressure falls, and constrict to reduce the blood flow in arterial hypertension. But since there is a limit to how far the terminal arterioles can constrict or dilate, the autoregulation operates only within a certain critical range of perfusion pressure (Fig. 7); it be ...
introducing ophthalmology - American Academy of Ophthalmology
... wish to be treated by those they meet with the same thoughtfulness and consideration given to people who have excellent vision. Many will appreciate being warned of your approach by a friendly “hello,” so they are not startled. It is also important to remember that people with less-than-perfect sigh ...
... wish to be treated by those they meet with the same thoughtfulness and consideration given to people who have excellent vision. Many will appreciate being warned of your approach by a friendly “hello,” so they are not startled. It is also important to remember that people with less-than-perfect sigh ...
PDF - Glaucoma Today
... Both the diagnosis and management of glaucoma continue to evolve at a rapid rate. Advancements in diagnostic testing allow clinicians to both diagnose glaucoma at earlier stages as well as more accurately detect glaucoma progression. Our understanding of how potential glaucoma risk factors, such as ...
... Both the diagnosis and management of glaucoma continue to evolve at a rapid rate. Advancements in diagnostic testing allow clinicians to both diagnose glaucoma at earlier stages as well as more accurately detect glaucoma progression. Our understanding of how potential glaucoma risk factors, such as ...
Final Protocol - Word 1142 KB - Medical Services Advisory Committee
... macular oedema, which is the most common cause of vision loss in people with diabetes, and may result in central but not peripheral vision loss. Macular ischemia occurs when the small blood vessels become so damaged that they become obstructed, depriving the macula of sufficient nutrients. The early ...
... macular oedema, which is the most common cause of vision loss in people with diabetes, and may result in central but not peripheral vision loss. Macular ischemia occurs when the small blood vessels become so damaged that they become obstructed, depriving the macula of sufficient nutrients. The early ...
effects of topical timolol and latanoprost by tear
... A single ophthalmologist got conjunctival samples on both eyes of patients. A strip of pre-cut cellulose acetate filter paper; with a pore size of 22 microns; 15 millimeters by 4 millimeters in size; was be used. A drop of proparacaine was instilled on each eye. The cellulose acetate filter strips w ...
... A single ophthalmologist got conjunctival samples on both eyes of patients. A strip of pre-cut cellulose acetate filter paper; with a pore size of 22 microns; 15 millimeters by 4 millimeters in size; was be used. A drop of proparacaine was instilled on each eye. The cellulose acetate filter strips w ...
EHEW - Eye Care Wales
... symptom or eye problem and how long since it began should be stated clearly on the patient record card. The patient should be offered an appointment within 24 hours in line with the agreed training and accreditation protocol. 2. The patient must self-certify, by ticking the appropriate box in Part 1 ...
... symptom or eye problem and how long since it began should be stated clearly on the patient record card. The patient should be offered an appointment within 24 hours in line with the agreed training and accreditation protocol. 2. The patient must self-certify, by ticking the appropriate box in Part 1 ...
Non-Vertiginous Dizziness - STA HealthCare Communications
... impaired vision due to diabetic retinopathy, peripheral neuropathy, and a postural drop in blood pressure. His VOR is hypometric for head thrusts to both the right and left, and he has significant retinal slip when viewing the optic nerves during head movement. What’s the diagnosis? Patrick’s sympto ...
... impaired vision due to diabetic retinopathy, peripheral neuropathy, and a postural drop in blood pressure. His VOR is hypometric for head thrusts to both the right and left, and he has significant retinal slip when viewing the optic nerves during head movement. What’s the diagnosis? Patrick’s sympto ...
Lens-Induced Glaucoma: Diagnosis and Management
... vision, with a history of a Pathogenesis. Phacolytic glaucoma, gradual decrease in vision as first described by Flocks and colover the preceding months leagues,1 was originally thought to be or years. Although poor PHACOMORPHIC GLAUCOMA. This patient with caused by obstruction of the trabecular visi ...
... vision, with a history of a Pathogenesis. Phacolytic glaucoma, gradual decrease in vision as first described by Flocks and colover the preceding months leagues,1 was originally thought to be or years. Although poor PHACOMORPHIC GLAUCOMA. This patient with caused by obstruction of the trabecular visi ...
Eye Emergencies - UNC School of Medicine
... Traumatic Eye Injuries Hyphema – Blood in the anterior chamber – Spontaneous or post-trauma – Treatment: Place the pt upright to allow inferior settling of blood Exclude ruptured globe Dilate the pupil with atropine Measure intraocular pressure – if > 30 mmHg apply topical Timolol Emergent Optho ev ...
... Traumatic Eye Injuries Hyphema – Blood in the anterior chamber – Spontaneous or post-trauma – Treatment: Place the pt upright to allow inferior settling of blood Exclude ruptured globe Dilate the pupil with atropine Measure intraocular pressure – if > 30 mmHg apply topical Timolol Emergent Optho ev ...
Unchanging visions: the effects and limitations of ocular stillness
... Thus, it makes sense that attentional cues should affect microsaccade rates. Notably, attentional shifts can cause the eyes to stop briefly. The microsaccadic rate transiently drops approximately 100–200 ms after the onset of an attentional cue, followed by a transient rate enhancement. This phenome ...
... Thus, it makes sense that attentional cues should affect microsaccade rates. Notably, attentional shifts can cause the eyes to stop briefly. The microsaccadic rate transiently drops approximately 100–200 ms after the onset of an attentional cue, followed by a transient rate enhancement. This phenome ...
Endoscopic Management of Complicated Bacterial Orbital Cellulitis
... is arising as a complication of sinus disease. The surgical management includes the urgent nasal endoscopic wide medial and inferior orbit decompression with the aim of orbital drainage, optic nerve decompression, lateral canthotomy and in some cases an orbital exenteration, along with adjuvant proc ...
... is arising as a complication of sinus disease. The surgical management includes the urgent nasal endoscopic wide medial and inferior orbit decompression with the aim of orbital drainage, optic nerve decompression, lateral canthotomy and in some cases an orbital exenteration, along with adjuvant proc ...
Pupillary responses in amblyopia - British Journal of Ophthalmology
... sensitivity function (CSF) curve does seem to develop to an adult-like shape earlier than the high frequency end. The Y and W cells are probably responsible for the detection of low to medium spatial frequencies.42 It has been suggested that the luminance detectors originally identified43 which show ...
... sensitivity function (CSF) curve does seem to develop to an adult-like shape earlier than the high frequency end. The Y and W cells are probably responsible for the detection of low to medium spatial frequencies.42 It has been suggested that the luminance detectors originally identified43 which show ...
Q-factor customized ablation profile for the correction of myopic
... postoperative changes did not demonstrate statistical significance in glare acuity (P Z.724) or low-contrast acuity (P Z.418). Regarding the asphericity of the cornea, all eyes demonstrated a tendency toward an oblate cornea after surgery (Table 2). The preoperative Q-factor as a function of the rad ...
... postoperative changes did not demonstrate statistical significance in glare acuity (P Z.724) or low-contrast acuity (P Z.418). Regarding the asphericity of the cornea, all eyes demonstrated a tendency toward an oblate cornea after surgery (Table 2). The preoperative Q-factor as a function of the rad ...
Visual effect of the combined correction of spherical and
... have measured the monochromatic aberrations in a large population of normal eyes [1,2]. These studies concluded that the values of each aberration term are subject-dependent and are distributed around zero, except for spherical aberration (SA), which has an average positive value that tends to incre ...
... have measured the monochromatic aberrations in a large population of normal eyes [1,2]. These studies concluded that the values of each aberration term are subject-dependent and are distributed around zero, except for spherical aberration (SA), which has an average positive value that tends to incre ...
Long-term Outcomes of Photorefractive Keratectomy for
... (⫾0.50) for the hyperopic group. Mean postoperative refractive errors at last follow-up (mean, 31 months) were ⫺3.55 D (⫾2.2.5) and ⫹1.41 D (⫾1.07) for the myopic and hyperopic groups, respectively. At last follow-up, cycloplegic refractions in 4 (50%) of 8 myopes and all hyperopes (100%) were withi ...
... (⫾0.50) for the hyperopic group. Mean postoperative refractive errors at last follow-up (mean, 31 months) were ⫺3.55 D (⫾2.2.5) and ⫹1.41 D (⫾1.07) for the myopic and hyperopic groups, respectively. At last follow-up, cycloplegic refractions in 4 (50%) of 8 myopes and all hyperopes (100%) were withi ...
A morphological analysis of experimental myopia in young
... which is about 1.5 times wider temporally than nasally; therefore, the nasal retina approaches the lens and cornea more closely than the temporal retina. The trabecular meshwork and Schlemm's canal are better developed temporally, and the scleral ossicles are larger. The anterior curvature of the le ...
... which is about 1.5 times wider temporally than nasally; therefore, the nasal retina approaches the lens and cornea more closely than the temporal retina. The trabecular meshwork and Schlemm's canal are better developed temporally, and the scleral ossicles are larger. The anterior curvature of the le ...
Center-surround antagonism in spatial vision: Retinal or cortical
... This handicap can be overcome by resorting to a paradigm in which the activity level of a small retinal region (perhaps a single ganglion cell) is gauged by the increment threshold in a fixed location for a brief small probing spot. And, by turning this into a null experiment, i.e., keeping the light ...
... This handicap can be overcome by resorting to a paradigm in which the activity level of a small retinal region (perhaps a single ganglion cell) is gauged by the increment threshold in a fixed location for a brief small probing spot. And, by turning this into a null experiment, i.e., keeping the light ...
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.