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the emergence of asteroid hyalosis as a sonologist`s marker
the emergence of asteroid hyalosis as a sonologist`s marker

... Asteroid Hyalosis (AH) occurs because of the accumulation of calcium soaps in vitreous of the eyes. B Scan of eyes demonstrates them as shiny star-like discrete objects suspended in vitreous that obscure a clear view of fundus. Although asymptomatic and unilateral and it is seen more often in the di ...
How to administer eye drops and eye ointment
How to administer eye drops and eye ointment

... that the eye drops will sting momentarily. The patient should be asked to close their eye following administration of eye drops or eye ointment for approximately one minute. This helps prevent systemic absorption and also maintains the drug in contact with the eye to aid therapeutic action. Systemic ...
Chapter 5 Sensation - Mercer Island School District
Chapter 5 Sensation - Mercer Island School District

... after viewing a moving visual stimulus for a time (tens of milliseconds to minutes) with stationary eyes, and then fixating a stationary stimulus. The stationary stimulus appears to move in the opposite direction to the original (physically moving) stimulus. The motion aftereffect is believed to be ...
Patel, Devina
Patel, Devina

... punched out chorioretinal histo spots, peripapillary atrophy and macular choroidal neovascular membranes predominantly in females 20-50 years of age. Disseminated lesions present initially, with macular involvement following many years later. In this case, a 29 year old myopic female is diagnosed wi ...
Adult Conjunctivitis - College of Registered Nurses of British Columbia
Adult Conjunctivitis - College of Registered Nurses of British Columbia

... suggest corneal abrasion. Corneal cells that are damaged or lost will stain green; cobalt blue light allows easier visualization of the abrasion. ...
Traumatic Brain Injury (TBI): Diagnosing and Managing Visual
Traumatic Brain Injury (TBI): Diagnosing and Managing Visual

... unconsciousness, “recovery time from these symptoms was significantly prolonged.” ...
Equine Recurrent Uveitis (“Moon Blindness”)
Equine Recurrent Uveitis (“Moon Blindness”)

... caused by an unspecified immune reaction. There are several causes that have been implicated such as bacteria (namely Leptospira), viruses, parasites (namely Onchocerca) and trauma. ERU, however, is most often considered to be an idiopathic disease, meaning no specific cause can be identified. ERU i ...
Eye Care Guidelines for Patients With Diabetes Mellitus
Eye Care Guidelines for Patients With Diabetes Mellitus

... ye care in the diabetic patient reflects a partnership between the primary physician and the eye doctor. The primary physician plays a fundamental role in the medical management, education, and coordination of care for the person with diabetes mellitus. The primary physician should be familiar with ...
The history of the meaning of the word Glaucoma
The history of the meaning of the word Glaucoma

... without any inflammatory symptoms as Simple Glaucoma. The concept of glaucoma has been further refined, particularly over the last 100 years. Dr Drance (1973) provided for the first time the definition of glaucoma as a disease of the optic nerve (an optic neuropathy) caused by numerous factors, call ...
Ocular Surface Research in Singapore
Ocular Surface Research in Singapore

... been shaped. To a large extent it is a feature that defines humans as a species, and it is certainly one of the most integral sensory tools people use to interact with their environment on a continual moment-by-moment basis. Blindness, in part because of these considerations, must be among the most ...
The history of the meaning of the word Glaucoma
The history of the meaning of the word Glaucoma

... without any inflammatory symptoms as Simple Glaucoma. The concept of glaucoma has been further refined, particularly over the last 100 years. Dr Drance (1973) provided for the first time the definition of glaucoma as a disease of the optic nerve (an optic neuropathy) caused by numerous factors, call ...
ocular trauma - LifeBridge Health
ocular trauma - LifeBridge Health

... mostly among persons in their 20s or younger. However, as the population ages, we are seeing an increasing number of eye injuries in the elderly. Most injuries occur in the home, are sports-related or workrelated or are the result of an assault or result from a motor vehicle accident. The most commo ...
Anisocoria
Anisocoria

... Anisocoria, Page 2 ...
Age-Related Macular Degeneration - Fact Sheet
Age-Related Macular Degeneration - Fact Sheet

... AMD starts out as the dry form of the disease and may progress to the wet form over time. Dry AMD accounts for 90 per cent of all AMD cases:  Occurs when the layer of cells beneath the retina begins to age and thin.  Vision loss occurs slowly, usually over a number of years, and may cause few or n ...
Hyper-Oxygen Permeable Rigid Contact Lenses As An Alternative
Hyper-Oxygen Permeable Rigid Contact Lenses As An Alternative

... on a new born (first several days/weeks of life), have found that 7.00/+19.50/10.4/8.6 is a good starting point, then work from there. • can go the the operating room during/after surgery, but really not necessary. Get more valuable information from a wake baby (ex: level of resistance to insertion, ...
Refractive Surgery in a Functionally One-eyed Patient?
Refractive Surgery in a Functionally One-eyed Patient?

... REFRACTIVE SURGERY COMPLEX CASE MANAGEMENT SECTION EDITORS: KARL G. STONECIPHER, MD; PARAG A. MAJMUDAR, MD; AND STEPHEN COLEMAN, MD ...
acute monocular blindness & basic neuro ophthalmology
acute monocular blindness & basic neuro ophthalmology

... • Most common in 20y – 40y age group, female preponderance • Approx. 30% will go on to develop MS • 31% will have recurrence of optic neuritis within 10 years • Consultation with ophthalmology and neurology is advisable ...
The Physiology of Vision
The Physiology of Vision

... computation starts in the retina (e.g on/off centres of retinal ganglion cells) LG performs further processing such as ‘summing’ the signals from the semifields as well as having more on/off centres. In the visual cortex a vast amount of processing occurs ...
SCLERAL CONTACT LENS CARE
SCLERAL CONTACT LENS CARE

... 1. Lubricate your eye & plunger with a preservative-free artificial tear or sterile saline. 2. Wet the removal plunger (the one without the hole in the middle), gently press it between the outer edge of the lens and pupil. Upon removal, the plunger should be at the outer edge of the lens (not in the ...
1 - UCC
1 - UCC

... 70. Concerning strabismus (a) On examination, the corneal reflexes appear to be normal in both eyes (b) A pseudostrabismus needs treatment (c) Convergent strabismus means the eye is turned inward (d) Divergent strabismus means the eye is turned inward (e) All strabismus requires surgery 71. Concern ...
1 - UCC
1 - UCC

... (e) Signs include impairment of color vision 69. Concerning CN VI palsy: (a) One sign is an inability of a patient to look medially (b) A muscle involved is the superior oblique (c) In the primary position the eye looks divergent (d) Cranial nerve VI palsy causes diplopia that can be eliminated by ...
10 - Dr Lea & Children`s Vision
10 - Dr Lea & Children`s Vision

... Professor h.c., Rehabilitation Sciences, University of Dortmund Senior Lecturer, Developmental Neuropsychology, Univ. of Helsinki ...
Inspect
Inspect

... your thumbs, exposing the sclera and conjunctiva, ask the patient to look up/down and side/side to get a good view – Assess color, vascular patterns, nodules or swelling. Conjunctiva clear, sclera white. No lesions or foreign bodies noted. ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)

... developing countries could be useful in detecting correctable causes of decreased vision, especially refractive errors, and in minimizing long term permanent visual disability. A total approach in a school eye health programme must include teacher orientation and health education of children in addi ...
IC-89_Bondel_Handout
IC-89_Bondel_Handout

... optical correction to be able to do this, and that this will be prescribed if required. Hyperopic patients often have imperfect binocular sight, and orthoptic rehabilitation can often be very useful after the operation. Patients are also warned that they may need surgical adjustment later, particula ...
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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.
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