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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)
  • Emmetropia – The perfect imperfection - PMC
    Emmetropia is the basis of our understanding of the ocular optical system When we are referring to an emmetropic eye, we are thinking of an eye with a perfect optical system
  • 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: Understanding Perfect Vision and Its Importance
    Emmetropia, often referred to as perfect vision, is the eye’s remarkable ability to focus light directly on the retina This allows for clear sight without the need for corrective lenses, playing a vital role in your overall eye health
  • Emmetropia vs. ametropia - An Eye Care Blog
    What is emmetropia in the human eye? A person with emmetropia has clear vision at all distances without corrective lenses and without squinting or straining their eyes
  • 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
  • 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 - an overview | ScienceDirect Topics
    Emmetropia is defined as the state of a perfectly focused eye where the focusing power of the cornea and lens is appropriately matched to the axial length of the eye, allowing light to form a clearly focused image on the retina





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