Better understand your visual problem
What is presbyopia?
Presbyopia is a natural and irreversible phenomenon. It is characterized by the difficulty of seeing clearly up close and therefore above all of being able to read without difficulty.
Near vision and distance vision deteriorate rapidly from the age of 40. Presbyopia is linked to the aging of the lens.
As we age, it is less and less able to deform. And around the age of 45-50, the lens is no longer able to provide the effort needed to ensure clear near vision.
What is astigmatism?
Astigmatism is the most common visual defect after myopia. It is usually due to a deformation or irregularity of the cornea (this is the outer part of the eye).
Astigmatism does not usually change over time, unlike myopia and hyperopia. For this reason, it is important to consult an ophthalmologist to rule out the possibility of keratoconus when a child or young adult's astigmatism increases suddenly. Astigmatism can be congenital and exist from birth and be very slow to change. Astigmatism can also appear following eye trauma (eye surgery, eye injury, infection, eye virus, etc.)
What is myopia?
Myopia is a vision defect that causes blurry vision at a distance but clear vision up close. Symptoms of myopia begin when one has signs that distant objects appear blurry, squinting, holding a book close to the face while reading, or complaints of eye discomfort or headaches.
25% of people with very high myopia become visually impaired or blind after the age of 60. This disorder generally appears in childhood, between the ages of 8 and 12, and progresses slowly with age, generally stabilizing around the ages of 20-25.
What is hyperopia?
Hyperopia suffers from a visual disorder where the image of an object is formed behind the retina, so vision is blurred. Hyperopia exists from childhood, infants and children very often have physiological hyperopia. In people suffering from severe hyperopia, the accommodation effort can cause a feeling of fatigue, headaches and visual discomfort.
Uncorrected vision becomes weaker near and far when the power of accommodation decreases, around the age of 40. Hyperopia usually manifests itself late. Around the age of 35-40, the power of accommodation decreases and vision becomes less clear, first near for reading, leading to early presbyopia, at a younger age than in normal subjects. A few years later, distance vision also decreases.
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