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emmetropia    
n. 正常眼

正常眼

emmetropia
n 1: (ophthalmology) the normal refractive condition of the eye
in which there is clear focus of light on the retina


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  • Emmetropia - Wikipedia
    Emmetropia is a state in which the eye is relaxed and focused on an object more than 6 meters or 20 feet away The light rays coming from that object are essentially parallel, and the rays are focused on the retina without effort
  • Emmetropia - All About Vision
    Emmetropia ("em-eh-TROE-pee-ah") is the medical term for naturally occurring clear vision In other words, a person with emmetropia does not have any refractive errors — such as nearsightedness (myopia), farsightedness (hyperopia) or astigmatism
  • Emmetropia: Definition, Causes, and Comparison with Ametropia
    Emmetropia is a medical term for "normal vision," or what doctors call 20 20 vision On the other hand, ametropia refers to the presence of one or more refractive errors (visual defects)
  • Is Emmetropia Normal? Only 35% of People Have It
    Emmetropia is the normal, ideal refractive state of the eye It means light focuses directly on the retina without any corrective lenses, producing clear distance vision Clinically, emmetropia falls within a refractive error between -0 75 and +0 75 diopters, essentially zero
  • Emmetropia: What It Means and Why It’s the Ideal Vision State
    Emmetropia is called the ideal state of vision because it means the eyes can see things without any help With no refractive error, you can see clearly at a distance without help
  • Emmetropia - Optometrists. org
    Emmetropia is the clinical term used by eye doctors to describe a person with perfect vision, also known as ‘20 20 sight’ This ideal condition describes an eye that has no refractive error or visual defects
  • Emmetropia | definition of emmetropia by Medical dictionary
    emmetropia The state of the normal eye, with relaxed ACCOMMODATION, in which light rays from a distance (parallel rays) focus accurately on the retina giving perfect vision
  • The Gold Standard of Vision: What Is Emmetropia? | OBN
    Emmetropia and ametropia are terms used to describe different states of vision While emmetropia refers to a healthy eye that is capable of focusing light properly, ametropia refers to an eye that has a visual defect and is unable to focus light properly
  • What Is Emmetropia? How the Eye Achieves Perfect Vision
    The state of having this perfect vision, where no corrective lenses are needed for distance viewing, is called emmetropia This term represents the ideal optical setup of the human eye, a biological system that must accurately focus incoming light onto a single point
  • emmetropia: Definition, Uses, and Clinical Overview
    emmetropia is the refractive state where the eye focuses light on the retina without needing glasses or contact lenses for distance In simple terms, it means the eye’s optics are “in balance” for clear distance vision





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