Histopathology of high myopia

Abstract: the study also shows that both parents are myopia, which is obviously one of the risk factors for children’s development of myopia, and these children’s outdoor activities for at least 20 hours a week can significantly reduce their risk of developing myopia., The higher the degree of myopia, the thinner the sclera. Scleral thickness thinning begins at the equator, and the closer it is to the posterior pole, the more obvious it is. In myopia, the sclera in front of the equator does not become thinner., The influence of histological changes on the incidence of glaucoma. The incidence of glaucoma in patients with myopia is increasing. In terms of histological changes, the histological changes that have been found are the stretching and thinning of the sieve plate, which leads to the reduction of the distance between the intraocular space and the space behind the sieve plate, which is the space in the orbital cerebrospinal fluid. There is a pressure difference between these spaces, and intraocular pressure and cerebrospinal fluid pressure are different., If the distance between these spaces becomes shorter, the gradient of the pressure difference will become steeper. Taking this as an example, this may be one of the reasons for the increased susceptibility to glaucoma caused by the thinning of sieve plate. Thinning of the paraoptic scleral margin may be another reason. The scleral margin near the optic disc is a biomechanical fixation of the sieve plate. If the sieve plate is compared to a suspension bridge, such as the Golden Gate Bridge in San Francisco, the tension of the rope to keep the bridge horizontal is determined by the height of the bridge column. The higher the column, the lower the tension of the rope. The “bridge column” of the sieve plate is the scleral edge near the optic disc. The thicker the scleral edge, the less tension the sieve plate trabecular may bear. Thinning of the sieve plate may cause greater tension. At the same time, the expansion and stretching of the paraoptic sclera edge increased the distance from the paraoptic Zinn Haller artery ring to the cribriform plate, which can be increased from 0.5mm to 5mm at most. It is unclear whether the increase in the distance between the nutrient vessels and the cribriform plate is related to hemodynamic changes., Delay the progress of myopia. Since the degree of myopia depends on the age of children and adolescents, we can speculate that if a 7-year-old child has – 4D myopia, the child’s myopia degree is likely to further deepen in the future, or even break through the boundary line of – 8D and develop into high myopia. Pharmacological treatment trials have not yet reached a definite conclusion as to whether patients should try the tested drugs., In addition, the study also shows that both parents are myopia, which is obviously one of the risk factors for children to develop myopia, and these children’s outdoor activities for at least 20 hours a week can significantly reduce their risk of developing myopia. In a family, if both parents are myopic, it is recommended that the family abide by the following rules: outdoor activity time is very important, which may prevent the occurrence of children’s myopia., The higher the myopia degree of

, the thinner the sclera. Scleral thickness thinning begins at the equator, and the closer it is to the posterior pole, the more obvious it is. In myopia, the sclera in front of the equator will not become thinner. The influence of histological changes of

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on the pathogenesis of glaucoma the incidence of glaucoma in

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myopic patients is increasing. In terms of histological changes, the histological changes that have been found are the stretching and thinning of the sieve plate, which leads to the reduction of the distance between the intraocular space and the space behind the sieve plate, which is the space in the orbital cerebrospinal fluid. There is a pressure difference between these spaces, and intraocular pressure and cerebrospinal fluid pressure are different.

if the distance between these spaces becomes shorter, the gradient of pressure difference will become steeper. Taking this as an example, this may be one of the reasons for the increased susceptibility to glaucoma caused by the thinning of sieve plate. Thinning of the paraoptic scleral margin may be another reason. The scleral margin near the optic disc is a biomechanical fixation of the sieve plate. If the sieve plate is compared to a suspension bridge, such as the Golden Gate Bridge in San Francisco, the tension of the rope to keep the bridge horizontal is determined by the height of the bridge column. The higher the column, the lower the tension of the rope. The “bridge column” of the sieve plate is the scleral edge near the optic disc. The thicker the scleral edge, the less tension the sieve plate trabecular may bear. Thinning of the sieve plate may cause greater tension. At the same time, the expansion and stretching of the paraoptic sclera edge increased the distance from the paraoptic Zinn Haller artery ring to the cribriform plate, which can be increased from 0.5mm to 5mm at most. It is unclear whether the increase in the distance between the trophoblast and the cribriform plate is related to hemodynamic changes.

delay the progress of myopia

since the degree of myopia depends on the age of children and adolescents, we can speculate that if a 7-year-old child has – 4D myopia, the child’s degree of myopia is likely to further deepen in the future, or even break through the boundary of – 8D and develop into high myopia. Pharmacological treatment trials have not reached a definite conclusion on whether patients should try the tested drugs.

in addition, the study also shows that both parents are myopia, which is obviously one of the risk factors for children to develop myopia, and these children’s outdoor activities for at least 20 hours a week can significantly reduce their risk of developing myopia. In a family, if both parents are myopic, it is recommended that the family abide by the following rules: outdoor activity time is very important, which may prevent the occurrence of children’s myopia.