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Index: Age related changes in refractive index (cortical sclerosis) can cause hypermetropia. Another cause of index hypermetropia is diabetes. [2] Occasionally, mild hypermetropic shift may be seen in association with cortical or subcapsular cataract also. [12] Positional: Positional hypermetropia occur due to posterior dislocation of Lens or ...
Latest stroke prevention guidelines highlight the importance of lifestyle interventions for cardiovascular health and managing conditions such as type 2 diabetes and high blood pressure.
While the common theories regarding vision issues during flight focus on cardiovascular factors (fluid shift, intracranial hypertension, CO 2 exposure, etc.), the difficulty comes in trying to explain how on any given mission, breathing the same air and exposed to the same microgravity, why some crewmembers have vision issues while others do ...
Ocular ischemic syndrome is the constellation of ocular signs and symptoms secondary to severe, chronic arterial hypoperfusion to the eye. [1] Amaurosis fugax is a form of acute vision loss caused by reduced blood flow to the eye; it may be a warning sign of an impending stroke, as both stroke and retinal artery occlusion can be caused by thromboembolism due to atherosclerosis elsewhere in the ...
More than 795,000 people in the U.S. have a stroke each year, which is a leading cause of serious long-term disability. Many of the leading risk factors for stroke are modifiable, making ...
The major causes of CVI are as follows: asphyxia, hypoxia (a lack of sufficient oxygen in the body's blood cells), or ischemia (not enough blood supply to the brain), all of which may occur during the birth process; developmental brain defects; head injury; hydrocephalus (when the cerebrospinal fluid does not circulate properly around the brain ...
When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. [33] Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic ...
Dara Lehon saw spots, blurriness with migraine. PFO caused her rare eye stroke, retinal artery occlusion. Eye stroke is painless, quick loss of vision in 1 eye.