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Is it transient? Transient blindness may occur in transient ischemic attacks, epilepsy, migraine, and hypertension.
Is it a sudden onset? The sudden onset of blindness may occur in optic neuritis, retinal vein thrombosis, central ... DIAGNOSTIC WORKUP
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Vision loss may be unilateral or bilateral; transient or persistent; of sudden or gradual onset; and painless or painful. Vision loss in one eye may be followed quickly by ensuing vision loss of the other eye, rendering the patient completely blind (e.g., untreated giant... Differential Diagnosis ... Workup and Diagnosis ... Treatment
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Sudden decrease of vision is usually an ominous sign. Most often the cause of permanent loss is at the retinal or optic nerve level. For the optic nerve to be associated there must be inflammation. For the retina to be the cause, there must be hemorrhaging or edema.... Differential Diagnosis ... Workup and Diagnosis ... Treatment
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... The causes of blurred vision and blindness can best be recalled with the use of anatomy. If the path of light is followed through the eye to the nervous system, the various components of the eye and nervous system that may be involved may be
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... Vision loss — the inability to perceive visual stimuli — can be sudden or gradual and temporary or permanent. The deficit can range from a slight impairment of vision to total blindness. It can result from an ocular, a neurologic, or a... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Pictures
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... Vision loss—the inability to perceive visual stimuli—can be sudden or gradual and temporary or permanent. The deficit can range from a slight impairment of vision to total blindness. It can result from an ocular, a neurologic, or a systemic disorder or from trauma or... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Pictures
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... Often difficult to identify, night blindness refers to impaired vision in the dark, especially after entering a darkened room or while driving at night. A symptom of choroidal and retinal degeneration, night blindness occurs in various ocular disorders and... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers
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... Color can evoke a diagnosis.
Yellow With jaundice, the shade of yellow varies with the level of the bilirubin, ranging from lemon-yellow with anemia to deep yellow. Pernicious anemia produces a bright
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... The inability to perceive visual stimuli, vision loss can be sudden or gradual and temporary or permanent. The deficit can range from a slight impairment of vision to total blindness. It can result from an ocular, neurologic, or systemic disorder or from trauma or the use of certain... Assessment ... History ... Physical examination ... Pediatric pointers ... Geriatric pointers ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures
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... Vision loss — the inability to perceive visual stimuli — can be sudden or gradual and temporary or permanent. The deficit can range from a slight impairment of vision to total blindness. It can result from an ocular, a neurologic, or a... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Patient counseling ... Pictures
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... Usually difficult to identify, night blindness (or nyctalopia) refers to impaired vision in the dark, especially after entering a darkened room or while driving at night. A symptom of choroidal and retinal degeneration, night blindness occurs in various ocular disorders and as an early... History ... Physical assessment ... Medical causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Patient counseling ... Pictures
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... Vision loss—the inability to perceive visual stimuli—can be sudden or gradual and temporary or permanent. The deficit can range from a slight impairment of vision to total blindness. It can result from an ocular, neurologic, or systemic disorder or from trauma or... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures
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The causes of blurred vision and blindness can best be recalled with
the use of anatomy. If the path of light is followed through the eye
to the nervous system, the various components of the eye and nervous system
that may be involved may be... Pictures
... READ EXCERPTS »
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