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presbyopia    
n. 老花眼,遠視眼

老花眼,遠視眼

presbyopia
n 1: a reduced ability to focus on near objects caused by loss
of elasticity of the crystalline lens after age 45 [synonym:
{presbyopia}, {farsightedness}]

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英文字典中文字典相關資料:
  • What Is Presbyopia? - American Academy of Ophthalmology
    Presbyopia is when your eyes gradually lose the ability to see things clearly up close It is a normal part of aging In fact, the term “presbyopia” comes from a Greek word which means “old eye ” You may start to notice presbyopia shortly after age 40
  • Presbyopia - Symptoms and causes - Mayo Clinic
    Presbyopia is the gradual loss of your eyes' ability to focus on nearby objects It's a natural, often annoying part of aging Presbyopia usually becomes noticeable in your early to mid-40s and continues to worsen until around age 65
  • Presbyopia - Wikipedia
    Presbyopia is a physiological insufficiency of optical accommodation associated with the aging of the eye; it results in progressively worsening ability to focus clearly on close objects [4]
  • Presbyopia: Symptoms, Diagnosis, and Treatment - WebMD
    Presybyopia: What is presbyopia? The natural decline in vision that often comes with age Know its causes and solutions
  • Presbyopia: Symptoms, Causes Treatment - Cleveland Clinic
    What is presbyopia? Presbyopia is the medical term for your eye losing the ability to change its focus This affects how well you can see close-up objects It occurs as your eye’s natural lens grows less flexible with aging
  • Presbyopia: Symptoms, Treatment, Definition - All About Vision
    Learn about presbyopia causes, symptoms and treatments, including options for contact lenses, eyeglasses or vision surgery
  • Presbyopia - National Eye Institute
    Presbyopia is a refractive error that makes it hard for middle-aged and older adults to see things up close It happens because the lens (an inner part of the eye that helps the eye focus) stops focusing light correctly on the retina (a light-sensitive layer of tissue at the back of the eye)
  • Presbyopia - Harvard Health
    Presbyopia eventually affects everyone, even people who are already farsighted (hyperopic) or nearsighted (myopic) Because people who are farsighted already need to work when focusing on near objects, they may experience presbyopia a little earlier in life
  • Presbyopia - Johns Hopkins Medicine
    What is presbyopia? Presbyopia is a type of refractive error that causes close objects to gradually appear out of focus as the eye ages It is caused by loss of the elasticity of the lens inside the eye due to natural aging Presbyopia eventually affects almost everyone, beginning as early as age 35, and progressing over the next 20 to 30 years
  • Presbyopia: How Aging Affects Your Vision - Verywell Health
    Key Takeaways Presbyopia starts after age 40 and worsens until around age 65 Symptoms include difficulty seeing up close, needing more light, and eye strain Treatments include reading glasses, contact lenses, and surgery, but presbyopia cannot be reversed





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