Diseases

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DEFINITION Paget’s disease of bone disrupts your body’s normal bone recycling process, in which old bone tissue is gradually replaced with new bone tissue. Over time, the affected bones may become fragile and misshapen. Paget’s disease of bone most commonly…

DEFINITION Type 1 diabetes, once known as juvenile diabetes or insulin-dependent diabetes, is a chronic condition in which the pancreas produces little or no insulin, a hormone needed to allow sugar (glucose) to enter cells to produce energy. The far…

DEFINITION Mild cognitive impairment (MCI) is an intermediate stage between the expected cognitive decline of normal aging and the more serious decline of dementia. It can involve problems with memory, language, thinking and judgment that are greater than normal age-related…

DEFINITION Migraine with aura is a migraine that’s preceded or accompanied by sensory warning signs or symptoms, such as flashes of light, blind spots, or tingling in your hand or face. Migraine with aura is generally treated in the same…

DEFINITION A cataract is a clouding of the normally clear lens of your eye. For people who have cataracts, seeing through cloudy lenses is a bit like looking through a frosty or fogged-up window. 
 Clouded vision caused by cataracts…

DEFINITION Astigmatism (uh-STIG-muh-tiz-um) is a common, mild and generally easily treatable imperfection in the curvature of your eye. The condition can cause blurred vision. 
 Astigmatism occurs when the front surface of your eye (cornea) or the lens, inside your…

DEFINITION At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Learn more. Request an appointment.
 
 
 
 
 
 
 
 Wet macular degeneration is a chronic eye disease…

DEFINITION 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.…

DEFINITION At Mayo Clinic, we take the time to listen, to find answers and to provide you the best care. Learn more. Request an appointment.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Dry…

DEFINITION Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. Nearsightedness may develop gradually or rapidly, often worsening during childhood and adolescence. Nearsightedness tends to run…