Immensely charming read.
“He had said that our lives are steered by uncertainties, many of which are disruptive or even daunting; but that if we persevere and remain generous of heart, we may be granted a moment of supreme lucidity—a moment in which all that has happened to us suddenly comes into focus as a necessary course of events, even as we find ourselves on the threshold of a bold new life that we had been meant to lead all along.”
“He had said that our lives are steered by uncertainties, many of which are disruptive or even daunting; but that if we persevere and remain generous of heart, we may be granted a moment of supreme lucidity—a moment in which all that has happened to us suddenly comes into focus as a necessary course of events, even as we find ourselves on the threshold of a bold new life that we had been meant to lead all along.”
Vision loss is caused by problems at any point along the visual pathway from the eyes to the brain, and sudden vision loss is an emergency.
The process of vision involves light passing into the eye and being transformed into electrical signals that are processed in the brain. Light enters the eye through an opening called the pupil and is changed into electrical signals by cells located toward the back of the eye in the retina. These signals then travel from the eyes through the optic nerves to the brain. In the brain, the occipital lobes process the visual information to make sense of it. Problems at any point along this visual pathway can cause vision loss.
Signs and Symptoms
Sudden vision loss is vision loss that occurs over a period of a few seconds or minutes to a few days. Vision may become blurry or cloudy, completely absent, or affected by flashing lights or specks in the visual field called floaters. Part of the field of vision or the entire field of vision may be affected. It is helpful to cover one eye and then the other to determine whether one eye or both eyes are affected. Sudden vision loss is most often painless but may be associated with eye pain, redness, and headache.
Causes
Common causes of sudden vision loss include eye trauma, blockage of blood flow to or from the retina (retinal artery occlusion or retinal vein occlusion), and pulling of the retina away from its usual position at the back of the eye (retinal detachment). Inflammation of the blood vessels that supply the eye and the optic nerve or inflammation of the optic nerve itself can also cause vision loss. A sudden blockage of blood flow to the occipital lobe of the brain (as can occur with a stroke) is another common cause of sudden vision loss.
Treatment
Vision loss due to problems with the eye may be treated with eye drops, medications, or surgery. If inflammation is the cause of the vision loss, steroids may be used. If the vision loss is caused by a sudden blockage of a blood vessel, treatment is directed at improving blood flow as soon as possible. Depending on the cause, vision loss can be minimized or reversed if treatment occurs quickly
#医学生Medic[超话]# #medicaltalks#
The process of vision involves light passing into the eye and being transformed into electrical signals that are processed in the brain. Light enters the eye through an opening called the pupil and is changed into electrical signals by cells located toward the back of the eye in the retina. These signals then travel from the eyes through the optic nerves to the brain. In the brain, the occipital lobes process the visual information to make sense of it. Problems at any point along this visual pathway can cause vision loss.
Signs and Symptoms
Sudden vision loss is vision loss that occurs over a period of a few seconds or minutes to a few days. Vision may become blurry or cloudy, completely absent, or affected by flashing lights or specks in the visual field called floaters. Part of the field of vision or the entire field of vision may be affected. It is helpful to cover one eye and then the other to determine whether one eye or both eyes are affected. Sudden vision loss is most often painless but may be associated with eye pain, redness, and headache.
Causes
Common causes of sudden vision loss include eye trauma, blockage of blood flow to or from the retina (retinal artery occlusion or retinal vein occlusion), and pulling of the retina away from its usual position at the back of the eye (retinal detachment). Inflammation of the blood vessels that supply the eye and the optic nerve or inflammation of the optic nerve itself can also cause vision loss. A sudden blockage of blood flow to the occipital lobe of the brain (as can occur with a stroke) is another common cause of sudden vision loss.
Treatment
Vision loss due to problems with the eye may be treated with eye drops, medications, or surgery. If inflammation is the cause of the vision loss, steroids may be used. If the vision loss is caused by a sudden blockage of a blood vessel, treatment is directed at improving blood flow as soon as possible. Depending on the cause, vision loss can be minimized or reversed if treatment occurs quickly
#医学生Medic[超话]# #medicaltalks#
Each birthday is a milestone we touch along life\'s way. and this leaves the happy memories for ever. May this special day brightens each hour like sunshine that cheers every flower. Looking back across the years, we come to realize that it takes many birthdays to make us kind and wise. Growing older only means the spirit grows serene. Happy birthday! https://t.cn/RJhCvwM
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