英国Clearview 甲型流感病毒N1亚型核酸检测试剂盒

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广州健仑生物科技有限公司

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【公司名称】 广州健仑生物科技有限公司
【市场部】    杨永汉

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【腾讯  】 2042552662
【公司地址】 广州清华科技园创新基地番禺石楼镇创启路63号二期2幢101-103室

7.全身循环障碍和代谢障碍以及遗传性疾病所致各种眼病变 高血压性视网膜病变，糖尿病性视网膜病变，肾炎性视网膜病变，妊娠高血压综合征性视网膜病变，血液病性视网膜病变，视网膜色素变性，黄斑变性，缺血性视神经病变，Leber病等各种眼底病变，糖尿病性白内障。

患者主诉视力减退，首先应当了解确切的视力情况，包括远视力和近视力，以除外屈光不正和老视。若远、近视力均不好，则应看有无眼红，即睫状充血。如存在睫状充血，应当考虑角膜炎、虹膜睫状体炎(包括外伤所致)、闭角型青光眼。若无睫状充血，则应检查屈光间质有无混浊，如角膜癫痕、变性、白内障、玻璃体混浊等。或为开角型青光眼、眼底病变。通过眼底检查，对视网膜、脉络膜、视神经病变可以明确。如上述病变均不明显，则要通过视野检查除外视路病变。若均为细菌性，应除外弱视。当然还需结合主诉中的其他症状全面分析。因此详细询

详细询问视力障碍的发生发展过程。视力障碍是单眼还是双眼;是同时还是先后发生;是迅速发生还是逐渐发生;是远视力差，还是近视力差，抑或远近视力都差。有无其他症状，如眼充血、羞明、流泪、疼痛，以除外角膜炎、虹膜睫状体炎。头痛、眼胀、雾视、虹视为除外青光眼。单眼复视，考虑角膜、晶体、玻璃体中线的混浊。晶体半脱位。暗点、色视、小视、夜盲、视物变形、视野缺损、眼前黑影飘动、闪光感等症状，应考虑有眼底病变。并注意有无外伤史。

视力障碍可由全身性疾病引起，故全面体检非常重要。尤其应注意神经、心血管及内分泌等系统的检查。眼部检查：必须系统、全面地从眼外到眼内进行检查。先右后左，以防遗漏重要体征。

视力包括远视力和近视力检查，以及对视力障碍有一个初步印象。远视力不佳、近视力尚好，可能为近视、散光等。近视力不佳、远视力良好，可能为远视。40岁以上者考虑为老视。远、近视力均不佳，可为远视或散光，或是屈光间质混浊，眼底或视神经病变，颅内病变等。如有睫状充血应考虑角膜炎，虹膜睫状体炎，青光眼。视力突然障碍，可能为视网膜中央动脉阻塞，缺血性视神经病变。数天内视力迅速减退，可能为视网膜中央静脉阻塞、视网膜脱离、玻璃体出血、眼及颅脑外伤、中毒、颅内急性病变等。无光感可能系视神经萎缩、眼球萎缩。眼球密、期青光眼、皮质盲等。对上述视力有了初步印象后，应按一定的步骤，从前向后逐步深人地检查。

7. systemic circulatory disorders and metabolic disorders and genetic diseases caused by a variety of ocular hypertension hypertensive retinopathy, diabetic retinopathy, nephritis retinopathy, pregnancy-induced hypertension retinopathy, hematologic retinopathy, retinal Pigmented degeneration, macular degeneration, ischemic optic neuropathy, Leber disease and other retinal lesions, diabetic cataracts.

Patients complain of vision loss, first of all should understand the exact visual acuity, including far vision and near vision to exclude refractive errors and presbyopia. If far, near vision is not good, you should see whether there is jealous, that ciliary hyperemia. If there is ciliary congestion, should consider keratitis, iridocyclitis (including trauma caused), angle closure glaucoma. If there is no ciliary hyperemia, you should check the refractive media with or without turbidity, such as corneal epilepsy, degeneration, cataract, vitreous opacity and so on. Or open-angle glaucoma, retinopathy. Through the fundus examination, the retina, choroid, optic neuropathy can be clear. If the above lesions are not obvious, you have to pass the visual field test except for pathological changes. If all are bacterial, should be excluded amblyopia. Of course, combined with the other complaints in the main comprehensive analysis. So detailed inquiry

Asked in detail about the occurrence and development of visual impairment. Is the visual impairment is monocular or binocular; is also occurred at the same time; is rapid or gradually occurs; is poor or poor near-vision vision, or distance vision is poor. With or without other symptoms, such as eye congestion, shame, tears, pain, to exclude keratitis, iridocyclitis. Headache, swollen eyes, fog, rainbow as the exception of glaucoma. Monocular diplopia, consider the cornea, crystal, vitreous midline opacity. Subluxation of crystals. Dark spots, color, small, night blindness, visual distortion, visual field defects, the immediate shadow flashes, flash and other symptoms, should consider the fundus lesions. And pay attention to whether there is a history of trauma.

Vision disorders can be caused by systemic disease, so a comprehensive medical examination is very important. In particular, should pay attention to nervous, cardiovascular and endocrine system checks. Eye examination: Must be systematic, comprehensive examination from the outside of the eye to the eye. Right first left, to prevent missing important signs.

Vision, including far vision and near vision examination, as well as a preliminary impression of visual impairment. Poor far vision, near vision is good, may be myopia, astigmatism and so on. Near vision is poor, good far vision, hyperopia may be. Over 40 years old consider presbyopia. Far, near vision is not good, for hyperopia or astigmatism, or refractive media opacity, fundus or optic neuropathy, intracranial lesions. If ciliary congestion should be considered keratitis, iridocyclitis, glaucoma. Abrupt vision loss may be blocked central retinal artery, ischemic optic neuropathy. Visual acuity rapidly decreased within a few days, may be the central retinal vein occlusion, retinal detachment, vitreous hemorrhage, eye and head trauma, poisoning, intracranial acute lesions. No light feeling may be optic nerve atrophy, eye atrophy. Eyeball, absolute glaucoma, cortical blindness. After the initial impression of the above vision, according to certain steps, step by step from before to examine.