errors.Howarerefractiveerrors diagnosed?Aneyecareprofessionalcandiagnoserefractiveerrorsduringacomprehensivedilatedeyeexamination.Peoplewitharefractiveerroroftenvisittheireyecareprofessionalwithcomplaintsofvisualdiscomfortorblurredvision.However,somepeopledon’tknowtheyaren’tseeingasclearlyasthey could.Whatis myopia? Myopia...
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...
clear front surface of the eye (cornea). The eye’s natural lens also bends light rays. Even the tear film on the surface of the eye and the fluids inside the eye (aqueous humorandvitreous) have some degree of refractive ability.
There are a number of different eye disorders and vision errors that can occur for several reasons. Some emerge at an early age while others make themselves known at a later stage in life. What causes these different vision errors and what can you do to correct them? To give you the ...
Refractive Errors 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 ...
The eye and its disorders. 15. The abnormally refracting eye (refractive errors). Trevor-Roper PD. PD Trevor-Roper - 《International Ophthalmology Clinics》 被引量: 0发表: 1974年 CHAPTER 15 - THE ABNORMALLY REFRACTING EYE ('REFRACTIVE ERRORS'). Trevor-Roper PD. &NA - 《International Ophthal...
PURPOSE. To determine the prevalence of refractive errors in a multiethnic Asian population aged over 40 years and to examine secular trends and racial differences. METHODS. A total of 10,033 adults (3353 Chinese, 3400 Indians, and 3280 Malays) participated in this study. Refractive error was ...
Refractive Errors By refraction, the light that enters the eye is focused onto a particular point of theretinaRetinaThe ten-layered nervous tissue membrane of the eye. It is continuous with the optic nerve and receives images of external objects and transmits visual impulses to the brain. Its ...
Refractive Errors Myopia (Nearsightedness) A myopic eye is longer than normal or has a cornea that is too steep, so that the light rays focus in front of the retina. Close objects look clear, but distant objects appear blurred. Myopia is inherited and is often discovered in children when ...
当当书之源外文图书在线销售正版《预订 Prevalence of Refractive Errors of the Eye Among Adults in Iraq [ISBN:9783659199554]》。最新《预订 Prevalence of Refractive Errors of the Eye Among Adults in Iraq [ISBN:9783659199554]》简介、书评、试读、价格、图片等相