百度试题 题目an instrument used to determine refractive errors of the eye iscalled ___ 相关知识点: 试题来源: 解析 retinoscope 反馈 收藏
This chapter focuses on the refractive errors in a human community as yet another cord that binds social interdependence. Refractive conditions prove useful to the survival of a social group, particularly an ancient or primitive group. In a myopic eye, the optical power is too strong...
an instrument used to determine refractive errors of the eye iscalled ___A.retinoscopeB.otoscopeC.osteoscopeD.salpingoscope的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机
Refractive error, also known as refraction error, is a problem with focusing of light on the retina due to the shape of the eye. The most common types of refractive error are near-sightedness, far-sightedness,astigmatism, and presbyopia. Near-sightedness results in far objects being blurry, ...
Spherical errors Spherical errors occur when the optical power of the eye is either too large or too small to focus light correctly on the retina, the light-sensitive tissue lining the inner surface of the eye. Examples of spherical errors are: ...
Causes of refractive errors The eye’s ability to refract or focus light sharply on the retina primarily is based on threeeye anatomyfeatures: 1) the overall length of the eye, 2) the curvature of the cornea and 3) the curvature of the lens inside the eye. ...
A refractive error is caused by an imbalance between the refractive power of the optical system of the eye and its axial length, rarely to altered refractive power of the cornea (keratoconus, cornea plana) or the lens (nuclear sclerosis, spherophakia). ...
RefractiveErrors 江苏大学附属医院眼科朱荣刚 Refraction Refractionisthebendingoflightasitpassesthroughoneobjecttoanother.EmmetropiaWhatarerefractive errors?Refractiveerrorsoccurwhentheshapeoftheeyepreventslightfromfocusingdirectlyontheretina.EmmetropiaRefractiveerrorsWhatarethedifferenttypesofrefractive errors?Themostcommon...
Refractive Errors Refractive error, also known as refraction error, is a problem with focusing light accurately on the retina due to the shape of the eye and or cornea. The most common types of refractive error are near-sightedness, far-sightedness, astigmatism, and presbyopia. Near-sightedne...
Apparatus for analysis and correction of abnormal refractive errors of the eye The invention contemplates instrumentation to aid in performing refraction-corrective surgery on the cornea, (1) by determining the topography of the anterior surface of the cornea, the determination being in the form of ...