Age Control
Age Control
  • Age Control
    • Founder
    • Aging around the world
      • Well-being and social policies
      • Transformation in aging
      • Development in aging
      • Challenges around
      • Future perception?
    • Coma
    • Blood & aging
    • Hemoglobin
    • Calorie restriction
    • Anti & Pro Oxidants
      • Oxidative stress
      • Hormesis
      • Stress functions
      • Industrial Oxidants
      • Conclusion
  • How do we age?
    • Airpressure
    • Gravity
    • Electricity of life
    • Current theories
    • Bio Balance
  • Health
    • Negative influence
    • Measuring age
    • Immortality
    • Physical change
    • Exercise II
    • Advise on food
  • Food
    • Digestion (1)
    • Digestion (2)
    • Digestion (3)
    • Probiotics and prebiotica
    • Side Effects of Supplements
    • Supplement & Superfood
      • Little history
      • Who needs supplements
      • Sample “super”food
      • Function “super”food
      • Lingzhi mushrooms
      • “Chemical” supplements
        • Age-related doses
        • Recommended supplements
      • Food additives
  • Psyche
    • Neural system
    • Sleep REM
    • Sleep next 1
    • Sleep how much
    • Sleep chemistry
    • Memory
    • Loss & Grief
  • Chemistry
    • Amino Acids (1)
    • Amino Acids (2) polarity
    • Amino Acids (3) polarity
    • Amino Acid function
    • Proetein (1)
    • Protein (2) application
    • Protein (3) Function
    • Carbohydrates (1)
    • Carbohydrates (2) neg
    • Carbohydrates (3) disease
    • Fat
    • Vitamins&Minerals (1)
    • Vitamins&Minerals (2)
    • Fibers
    • Liquids (Human)
    • Testresults
  • Love&Life
    • Hormones
    • Enzymes
    • Older parent
    • Sex & more
      • Sex development
      • Sex at old age
  • Improve
    • Body&Mind
    • Discipline
    • Exercise
    • Neurex
    • Tips & Tricks
      • Watch what people eat and drink
      • Look after teeth and mouth
      • Stay active
      • Balance Disorders
      • Meditate
      • Take care of your feet
      • Sort out sleep
      • Crime & safety
      • Maintain the brain
      • Humor, laughter, and play
      • Memory Problems
      • Keep learning
      • Meaning of life
      • Cultivate relationships
      • Community connections
      • Volunteering
      • Reduce stress
      • Be grateful
      • Express feelings
      • Accept
      • Stay positive
      • Practice prevention
      • Coping with change
      • Addiction kills
      • Prepare end
  • Gender
    • Looks
    • Skin
    • Moisturizer
    • Preferences
    • Personality&Intelligence
  • Change
    • Socioemotional Late Adulthood
    • Aging process
      • Bones & Joints
      • Bone Marrow
      • Muscles and Body Fat
      • Eyes
      • Ears
      • Mouth and Nose
      • Brain and Nervous System
      • Heart and Blood Vessels
      • Muscles of Breathing and the Lungs
      • Digestive System
      • Kidneys and Urinary Tract
      • Reproductive Organs
      • Blood Production
      • Immune System
    • Changes in adult life (1)
Age Control
  • Age Control
    • Founder
    • Aging around the world
      • Well-being and social policies
      • Transformation in aging
      • Development in aging
      • Challenges around
      • Future perception?
    • Coma
    • Blood & aging
    • Hemoglobin
    • Calorie restriction
    • Anti & Pro Oxidants
      • Oxidative stress
      • Hormesis
      • Stress functions
      • Industrial Oxidants
      • Conclusion
  • How do we age?
    • Airpressure
    • Gravity
    • Electricity of life
    • Current theories
    • Bio Balance
  • Health
    • Negative influence
    • Measuring age
    • Immortality
    • Physical change
    • Exercise II
    • Advise on food
  • Food
    • Digestion (1)
    • Digestion (2)
    • Digestion (3)
    • Probiotics and prebiotica
    • Side Effects of Supplements
    • Supplement & Superfood
      • Little history
      • Who needs supplements
      • Sample “super”food
      • Function “super”food
      • Lingzhi mushrooms
      • “Chemical” supplements
        • Age-related doses
        • Recommended supplements
      • Food additives
  • Psyche
    • Neural system
    • Sleep REM
    • Sleep next 1
    • Sleep how much
    • Sleep chemistry
    • Memory
    • Loss & Grief
  • Chemistry
    • Amino Acids (1)
    • Amino Acids (2) polarity
    • Amino Acids (3) polarity
    • Amino Acid function
    • Proetein (1)
    • Protein (2) application
    • Protein (3) Function
    • Carbohydrates (1)
    • Carbohydrates (2) neg
    • Carbohydrates (3) disease
    • Fat
    • Vitamins&Minerals (1)
    • Vitamins&Minerals (2)
    • Fibers
    • Liquids (Human)
    • Testresults
  • Love&Life
    • Hormones
    • Enzymes
    • Older parent
    • Sex & more
      • Sex development
      • Sex at old age
  • Improve
    • Body&Mind
    • Discipline
    • Exercise
    • Neurex
    • Tips & Tricks
      • Watch what people eat and drink
      • Look after teeth and mouth
      • Stay active
      • Balance Disorders
      • Meditate
      • Take care of your feet
      • Sort out sleep
      • Crime & safety
      • Maintain the brain
      • Humor, laughter, and play
      • Memory Problems
      • Keep learning
      • Meaning of life
      • Cultivate relationships
      • Community connections
      • Volunteering
      • Reduce stress
      • Be grateful
      • Express feelings
      • Accept
      • Stay positive
      • Practice prevention
      • Coping with change
      • Addiction kills
      • Prepare end
  • Gender
    • Looks
    • Skin
    • Moisturizer
    • Preferences
    • Personality&Intelligence
  • Change
    • Socioemotional Late Adulthood
    • Aging process
      • Bones & Joints
      • Bone Marrow
      • Muscles and Body Fat
      • Eyes
      • Ears
      • Mouth and Nose
      • Brain and Nervous System
      • Heart and Blood Vessels
      • Muscles of Breathing and the Lungs
      • Digestive System
      • Kidneys and Urinary Tract
      • Reproductive Organs
      • Blood Production
      • Immune System
    • Changes in adult life (1)
Age Control
  • Age Control
    • Founder
    • Aging around the world
      • Well-being and social policies
      • Transformation in aging
      • Development in aging
      • Challenges around
      • Future perception?
    • Coma
    • Blood & aging
    • Hemoglobin
    • Calorie restriction
    • Anti & Pro Oxidants
      • Oxidative stress
      • Hormesis
      • Stress functions
      • Industrial Oxidants
      • Conclusion
  • How do we age?
    • Airpressure
    • Gravity
    • Electricity of life
    • Current theories
    • Bio Balance
  • Health
    • Negative influence
    • Measuring age
    • Immortality
    • Physical change
    • Exercise II
    • Advise on food
  • Food
    • Digestion (1)
    • Digestion (2)
    • Digestion (3)
    • Probiotics and prebiotica
    • Side Effects of Supplements
    • Supplement & Superfood
      • Little history
      • Who needs supplements
      • Sample “super”food
      • Function “super”food
      • Lingzhi mushrooms
      • “Chemical” supplements
        • Age-related doses
        • Recommended supplements
      • Food additives
  • Psyche
    • Neural system
    • Sleep REM
    • Sleep next 1
    • Sleep how much
    • Sleep chemistry
    • Memory
    • Loss & Grief
  • Chemistry
    • Amino Acids (1)
    • Amino Acids (2) polarity
    • Amino Acids (3) polarity
    • Amino Acid function
    • Proetein (1)
    • Protein (2) application
    • Protein (3) Function
    • Carbohydrates (1)
    • Carbohydrates (2) neg
    • Carbohydrates (3) disease
    • Fat
    • Vitamins&Minerals (1)
    • Vitamins&Minerals (2)
    • Fibers
    • Liquids (Human)
    • Testresults
  • Love&Life
    • Hormones
    • Enzymes
    • Older parent
    • Sex & more
      • Sex development
      • Sex at old age
  • Improve
    • Body&Mind
    • Discipline
    • Exercise
    • Neurex
    • Tips & Tricks
      • Watch what people eat and drink
      • Look after teeth and mouth
      • Stay active
      • Balance Disorders
      • Meditate
      • Take care of your feet
      • Sort out sleep
      • Crime & safety
      • Maintain the brain
      • Humor, laughter, and play
      • Memory Problems
      • Keep learning
      • Meaning of life
      • Cultivate relationships
      • Community connections
      • Volunteering
      • Reduce stress
      • Be grateful
      • Express feelings
      • Accept
      • Stay positive
      • Practice prevention
      • Coping with change
      • Addiction kills
      • Prepare end
  • Gender
    • Looks
    • Skin
    • Moisturizer
    • Preferences
    • Personality&Intelligence
  • Change
    • Socioemotional Late Adulthood
    • Aging process
      • Bones & Joints
      • Bone Marrow
      • Muscles and Body Fat
      • Eyes
      • Ears
      • Mouth and Nose
      • Brain and Nervous System
      • Heart and Blood Vessels
      • Muscles of Breathing and the Lungs
      • Digestive System
      • Kidneys and Urinary Tract
      • Reproductive Organs
      • Blood Production
      • Immune System
    • Changes in adult life (1)

Eyes

  1. Home
  2. Change
  3. Aging process
  4. Eyes

Eyes

As people age, the following occurs:

  • The lens stiffens, making focusing on close objects difficult
  • The lens becomes denser, making seeing in dim light harder and driving difficult.
  • The pupil reacts more slowly to changes in light lowering reaction time.
  • The lens yellows, changing the way colors are perceived.
  • The number of nerve cells decreases, impairing depth perception.
  • The eyes produce less fluid, making them feel dry.

Loss of near vision: During their 40s, most people notice that seeing objects closer than 60-100 cm becomes difficult. This change in vision, called presbyopia, occurs because the lens in the eye stiffens. Normally, the lens changes its shape to help the eye focus. A stiffer lens makes focusing on close objects harder. Ultimately, almost everyone gets presbyopia and needs magnifying reading glasses. People who need glasses to see distant objects may need to wear bifocals or glasses with variable-focus lenses.

Need for brighter light: As people continue to age, seeing in dim light becomes more difficult because the lens becomes less transparent. There are two types of photoreceptors in the human retina, rods, and cones. Rods are responsible for vision at low light levels (scotopic vision). They do not mediate color vision and have a low spatial acuity. Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity. The central fovea is populated exclusively by cones. There are 3 types of cones which we refer to as the short-wavelength sensitive cones, the middle-wavelength-sensitive cones, and the long-wavelength sensitive cones or S-cone, M-cones, and L-cones for short. The light levels where both are operational are called mesopic.  A denser lens means that less light passes through to the retina at the back of the eye. Also, the retina, which contains the cells that sense light, becomes less sensitive. For reading brighter light is needed. On average, 60-year-olds need 3 times more light to read than 20-year-olds.

Changes in color perception: Colors are perceived differently, partly because the lens tends to yellow with aging. Colors look less bright and contrasts between different colors may be more difficult to see. Blue looks grayer, and blueprint or background look washed out. However, older people have trouble reading black letters printed on a blue background or reading blue letters.

The pupil of the eye reacts more slowly to changes in light. The pupil widens and narrows to let more or less light in, depending on the brightness of the surroundings. A slow-reacting pupil means that older people may be unable to see when they first enter a dark room. Or they may be temporarily blinded when they enter a brightly lit area. Older people become more sensitive to glare. However, increased sensitivity to glare is often due to darkened areas in the lens or to cataracts.

Fine details, including differences in shades and tones, become more difficult to discern. The reason is probably a decrease in the number of nerve cells that transmit visual signals from the eyes to the brain. This change affects the way depth is perceived, and judging distances becomes more difficult.

Older people see more tiny black specks moving across their field of vision. These specks, called floaters, are bits of normal fluid in the eye that have solidified. Floaters do not significantly interfere with vision. Unless they suddenly increase in number, they are not a cause for concern.

The eyes tend to become dry. This change occurs because of the number of cells that produce fluids to lubricate the eyes decreases. Tear production may decrease.

The appearance of the eyes changes in several ways:

  • The whites (sclera) of the eyes turns slightly yellow or brown. This change results from many years of exposure to ultraviolet light, wind, and dust.
  • Random splotches of color appear in the whites of the eyes, particularly in people with a dark complexion.
  • A gray-white ring (arcus senilis) appear on the surface of the eye. The ring is made of calcium and cholesterol salts. It does not affect vision.
  • The lower eyelid hangs away from the eyeball because the muscles around the eye weaken and the tendons stretch. This condition (called ectropion) interferes with lubricating the eyeball and contribute to dry eyes.
  • The eye appears to sink into the head because the amount of fat around the eye decreases.
Contact

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Spui 214e
2511BX The Hague
Netherlands
ph- 31703625800
mail; info@agecontrol.nl

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Age Control, working on a long healthy life for everyone. Our goal is to limit negative years of health and change to a long term positive and active life.

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