snow blind
Introduction
Snow Blind Introduction Snow blindness is electro-optic ophthalmia, mainly inflammation caused by ultraviolet rays on the cornea and conjunctival epithelium. It is characterized by redness and swelling of the eyelids, conjunctival congestion and edema, severe foreign body sensation and pain, and symptoms such as fear of light, tearing and sputum. There will be blurred vision during the onset of the disease. When watching snow or walking in the snow, it is best to wear black sunglasses or safety glasses. This will prevent the ultraviolet rays reflected from the snow from damaging the eyes. Once you have snow blindness, you can use fresh human milk or fresh milk to drop your eyes, 5-6 drops each time, every 3-5 minutes, the milk used is too cold to be used, you can also clean the eyes with the potion, to the dark Cover your eyes with a blindfold and apply ice with a cold towel. basic knowledge Sickness ratio: 0.1% Susceptible people: no specific population Mode of infection: non-infectious Complications: sympathetic ophthalmia, tinnitus, nausea and vomiting
Cause
Snow blind cause
Cause
Trauma, ultraviolet rays caused by damage to the cornea and conjunctival epithelium.
Prevention
Snow blind prevention
1. When watching snow or walking in the snow, it is best to wear black sunglasses or safety glasses, so as to avoid the ultraviolet rays reflected by the snow from hurting the eyes.
2. Once you have snow blindness, you can use fresh human milk or fresh milk to drop your eyes, 5-6 drops each time, every 3-5 minutes, the used milk should be boiled cold enough to use, you can also clean your eyes with syrup. Go to the dark or cover your eyes with a blindfold and apply a cold towel.
3. Reduce the use of the eye, try to rest, do not apply heat, high temperature will increase the pain.
4. A good environment can alleviate the symptoms of snow blindness in time, but it takes 5-7 days to fully recover.
Complication
Snow blind complications Complications sympathetic ophthalmia, tinnitus, nausea and vomiting
Sympathetic ophthalmia can be complicated. Have headache, dizziness, nausea, vomiting, heavy hearing, tinnitus, hair loss and so on.
Symptom
Snow blind symptoms Common symptoms Tear debilitated eyelids have obvious ... Conjunctival edema and corneal ulcer conjunctival hyperemia shock
Eyelid swelling and swelling, conjunctival congestion and edema, severe foreign body sensation and pain, symptoms are afraid of light, tears and sputum do not open eyes, there will be blurred vision during the onset.
Examine
Snow blind inspection
1. Ask in detail about the history of trauma, including the cause of injury, the type, direction, speed and distance of the wound, and the time of injury.
2. Must pay attention to the general condition, such as shock, craniocerebral trauma, infection and so on. Those who have combined with generalized trauma should be consulted by the relevant department. The local examination must be light, do not oppress the eye, and if necessary, drop the surface anesthetic. If combined with traumatic brain injury, do not dilated before the neurological examination.
3. When checking the foreign body on the surface of the eyeball, special attention should be paid to the cornea, the inferior sulcus and the conjunctiva of the iliac crest.
4. For patients with eye contusion, the eye appendage and the front and back of the eye should be examined in detail. For patients with penetrating eye injury, the size, location, and depth of the wound should be examined in detail, and whether the contents of the eyeball are prolapsed, eye movement disorders, or foreign bodies remain, and if necessary, a drawing is given. Thermal and chemical burns should be described in terms of their extent and extent. Note that if there is a phosphorus odor on the wound during phosphorus burns, the presence or absence of phosphorescence should be checked in the dark.
5. Check the visual acuity and function of each eye. Except for obvious eyeball penetrating injury, the fundus should be examined as much as possible, and dilated if necessary.
Diagnosis
Snow blind diagnosis
diagnosis
Diagnosis can be made based on medical history, clinical manifestations, and examination.
Differential diagnosis
Identification as mechanical or non-mechanical trauma, such as mechanical injury, further distinguish eyeball contusion, eyeball penetrating injury or adnexal injury, with or without intraocular or intraorbital, foreign body retention in the eyelid, such as non-mechanical injury, It should be divided into physical, chemical and so on.
