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presbyopia    
n. 老花眼,远视眼

老花眼,远视眼

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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  • 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: Symptoms, Causes Treatment - Cleveland Clinic
    Presbyopia is the loss of clear close-up vision due to age-related changes to your eye’s lens Eyeglasses, contacts and surgery can help correct your vision Presbyopia is a natural part of aging that causes blurry close-up vision starting in your 40s
  • Presbyopia: Symptoms, Diagnosis, and Treatment - WebMD
    Presbyopia is a decline in your vision when your eyes lose the ability to focus on things close to you In spite of the big name, it isn't a disease It's a natural part of the aging
  • What Is Presbyopia? - American Academy of Ophthalmology
    Presbyopia is an age-related condition where the eye’s lens doesn’t change shape as easily as it once did Presbyopia symptoms include difficulty reading or seeing things at close range
  • 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: Symptoms, Treatment, Definition - All About Vision
    Presbyopia is the normal loss of near focusing ability that occurs with age Most people begin to notice the effects of presbyopia sometime after age 40, when they start having trouble seeing small print clearly — including text messages on their phone
  • Presbyopia: Symptoms, causes, treatments, and more
    Presbyopia is an eye condition that causes a reduced ability to see things up close It occurs when the eye’s lens stops focusing light correctly on the retina and usually develops later in life





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