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What’s
Myopia? |
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A person with myopia can see near
objects more clearly than far ones and needs to
wear spectacles to correct this. Myopia is usually
caused by an eyeball that is too long. Far objects
are focused in front of the retina and are therefore
seen as blurred images. |
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What’s
High Myopia? |
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Myopia is not only about wearing glasses.
People with higher degrees of myopia also have a
greater risk of complications that can cause blindness.
These complications occur later on in life after
the age of 4O. Examples of these are: a tear in
the retina, detachment of the retina from the back
of the eye and bleeding into the retina (macular
degeneration). These may cause a person to see spots,
shadows, flashes of light, or suffer from blurred
vision. Anyone who experiences these symptoms should
see an eye specialist without delay. |
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What’s
Hypermetropia? |
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A long-sighted person may experience
difficulty focusing on both near and far objects
but suffers greater blurred vision with near objects.
Hypermetropia is usually caused by an eyeball that
is too short which causes objects to be focused
behind the retina. |
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What’s
Presbyopia? |
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This is a condition usually affecting
people over the age of 4O. This causes difficulty
in reading and other close-up work. It occurs at
a younger age in long-sighted people. Reading spectacles
are then required. Bifocal, multifocal or progressive
lenses may be prescribed. Presbyopia is due to the
lens of the eye becoming less elastic and being
less able to change its shape to focus on near objects. |
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What’s
Astigmatism? |
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This is usually caused when the cornea
is not equally curved in all directions. It can
occur in healthy people or it can be the result
of a corneal disease, an injury or a scar. It is
treated with spectacles or contact lenses. |
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What
Is A Cataract? |
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A cataract is a clouding of the lens
of the eye. The lens is a clear disc within the
eyeball. It is normally transparent and is situated
behind the pupil. It focuses incoming light rays
to form a sharp, distinct image onto the retina,
similar to the way a camera lens focuses an image
onto film.
A cataract is like a dirty or cloudy camera lens.
It blocks light rays from entering the eye, thus
blurring vision.
A cataract is neither a tumor nor an abnormal
growth of tissue in the eye. It is due to physical
changes in the contents of the lens, resulting
in its clouding. It is easily detected with specialised
instruments used by doctors. |
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What
Is Retinal Detachment? |
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A retinal detachment is a separation
of the retina from the back wall of the eye. When
there is a tear of the retina, liquid from the vitreous
may pass through the tear, and detach the retina.
As the fluid accumulates, the retinal detachment
becomes larger. Detached areas of the retina
loses its function and is damaged. |
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What
Is Glaucoma? |
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Glaucoma is a group of diseases that
can lead to damage to the eye's optic nerve and
result in blindness. It is caused by increased intraocular
pressure (IOP) resulting either from a malformation
or malfunction of the eye's drainage structure.
Glaucoma is frequently referred to as the
“SNEK THIEF OF SIGHT” because
IT PROGRESS WITHOUT OBVIOUS SYMPTOMS. |
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What
Is Lazy Eye? |
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Lazy eye is diagnosed when sight is
still poor after any refractive error has been corrected
with spectacles and there is no other problem with
the eye.
The brain needs stimulation of sharp pictures
from the eyes to develop fully during childhood.
Anything that causes blurred images in the eye
will result in the respective part of the brain
used for seeing to remain undeveloped. This eye
will not see well because to see clearly, one
needs an eye that can form sharp pictures as well
as a developed portion of the brain that is able
to read these pictures. Even if the eye's condition
is fully corrected later in life, vision will
not recover because the brain only develops in
early childhood. |
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