Abstract: the stimulation of ocular contusion causes vasodilation and hyperemia of ciliary body, enhanced permeability, edema of ciliary body, relaxation of ciliary band, change of crystal thickness and curvature, increase of refractive power and decrease of visual acuity., How is eye contusion myopia to return a responsibility? Ocular contusion myopia is more common in teenagers, more men than women. It is mostly caused by boxing injury to the eyes. After the injury, there are eyelid contusion to varying degrees, and the far vision decreases. It often causes temporary myopia, but it can recover soon., Studies have shown that ocular contusion myopia may be related to the following factors: first, the increase of lens thickness. Domestic researchers have carried out ultrasonic biomicroscopy on ocular contusion myopia. The results show that the lens thickness increases significantly and the anterior chamber becomes shallower in the early stage after trauma. With the remission of the disease, the crystal thickness gradually decreased and the anterior chamber gradually deepened, which confirmed that the basic pathological change of contusion myopia was the increase of crystal thickness., II. Ciliary body vasodilation and congestion. The stimulation of eye contusion causes ciliary body vasodilation and congestion, and the enhanced permeability causes ciliary body edema and ciliary band relaxation, changes in crystal thickness and curvature, resulting in increased refractive power and decreased vision. On the other hand, contusion can cause damage to ciliary epithelium, reduce secretion of aqueous humor, reduce intraocular pressure, shallow anterior chamber and forward movement of ciliary body, resulting in myopia., Third, ciliary muscle sympathetic paralysis,
eye contusion myopia is how one thing? Ocular contusion myopia is more common in teenagers, more men than women, mostly caused by boxing injury to the eyes. After the injury, there are eyelid contusion to varying degrees, and the far vision decreases. It often causes temporary myopia, but it can recover soon.
research shows that ocular contusion myopia may be related to the following factors:
first, the increase of lens thickness
domestic researchers have carried out ultrasonic biomicroscopy on ocular contusion myopia. The results show that the lens thickness increases significantly and the anterior chamber becomes shallower in the early stage after trauma. With the remission of the disease, the decrease of lens thickness and the deepening of anterior chamber, it is confirmed that the basic pathological change of contusion myopia is the increase of lens thickness.
II. Ciliary body vasodilation and congestion the stimulation of
eye contusion causes ciliary body vasodilation and congestion, the enhancement of permeability causes ciliary body edema, ciliary band relaxation, changes in crystal thickness and curvature, increases refractive power and decreases visual acuity. On the other hand, contusion can cause damage to ciliary epithelium, reduce secretion of aqueous humor, reduce intraocular pressure, shallow anterior chamber and forward movement of ciliary body, resulting in myopia.
III. ciliary muscle sympathetic paralysis
trauma causes sympathetic paralysis innervating the ciliary muscle. On this basis, prostaglandins are released, pupils shrink and spasm are adjusted, which shows temporary pseudomyopia. The myopia caused by spasm can be alleviated by ciliary muscle paralysis. In addition, contusion can cause damage to the suspensory ligament, partial rupture of the suspensory ligament, increase in crystal thickness and shallow anterior chamber. This myopia can not be alleviated with ciliary muscle paralysis, resulting in permanent myopia.
in a word, the increase of lens thickness caused by ocular contusion, ciliary body edema and regulatory spasm are the main causes of ocular contusion myopia. However, we don’t have to worry too much. This kind of pseudomyopia can recover within 2 weeks without affecting the eyes.