The Solution to
Common Eye Complaints
Myopia (Near Sightedness)
Myopia or near sightedness is a refractive eye disorder
that affects our eyes' long distance vision. People with
myopia have no difficulty focusing their eyes on close-up
objects, but have varying degrees of difficulty focusing on
more distant objects. It often first appears during
childhood and gradually worsens with age - this is known as
The major cause of myopia is an abnormal elongation of
the eyeball, where it becomes stretched from front to back,
or the curvature of the cornea is greater than usual. The
distance between the retina - the light sensitive part of
the eye on the back wall of the eyeball - and the cornea at
the front of the eye increases, and so light rays entering
the eye come to focus in front of the retina. This leaves a
'blur circle' on the retina itself as the light rays cross
paths and begin to diverge beyond the focal point.
Recent studies have revealed that although myopia can be
hereditary, it is also accentuated by chronic use of the
eyes for short-distance focusing, such as when working at a
computer screen. Evolution has programmed our eyes to
naturally focus in the middle to long-distance when our eyes
are at rest. To focus on close-up work our eye muscles must
tense, thickening the eye lens, in order to focus the light
rays upon the retina. Persistent or prolonged short-distance
focusing causes pressure to increase in the vitreous chamber
of the eye, thus elongating the eyeball.
Pinhole glasses offer instant relief as the 'stopped
down' aperture produces a greater focal range. Combined with
the 'narrower than normal' beam of light entering the eye,
pinhole glasses reduce the the blur circle on the retina, so
enabling the eyes to see more clearly.
Hyperopia (Far Sightedness)
Hyperopia or far sightedness is a refractive eye disorder
caused by a shorter than normal eyeball or a flatter than
usual cornea. Light entering the unaided eye comes to focus
behind the retina, thus casting a blur circle on the retina
itself. People suffering from hyperopia find it difficult to
focus in the short-distance, whilst have fewer problems
focusing in the middle to long-distance.
Young people with this condition can naturally improve
their vision by working the focusing accommodation of their
eyes. By continuously trying to focus in the short-distance
their eye muscles will become stronger, enabling the eye
lens to shorten the focal length of the light rays, and
therefore decrease the blur circle on the retina.
Pinhole glasses, whilst not suitable for the hyperopic
young, can be used for far sightedness in later life when
the eye muscles weaken with ageing. They offer instant
relief as the 'stopped down' aperture produces a greater
focal range. Combined with the 'narrower than normal' beam
of light entering the eye, the blur circle on the retina is
decreased, so enabling the eyes to see more clearly.
Presbyopia is a condition that affects many people from
their mid-40s onwards. As we age our eye lenses become less
flexible, making it more difficult for us to focus in the
short-distance. The weaker eye lenses gradually becomes less
able to focus divergent light rays onto the retina, moving
the focal point backwards beyond the retina. As with
hyperopia, a gradually expanding blur circle is cast upon
the retina itself, blurring our vision.
Pinhole glasses offer relief in the short-term, as the
'stopped down' aperture produces a greater focal range.
Combined with the 'narrower than normal' beam of light
entering the eye, the blur circle on the retina is
decreased, so enabling the eyes to see more clearly. It is
recommended however, that pinhole glasses should be used in
conjunction with eye muscle strengthening exercises, so the
eye muscles themselves are better equipped to keep the eye
lenses more flexible.
Astigmatism is a refractive eye disorder caused by a
misshapen cornea at the front of the eye. A normal cornea is
spherical in shape, but some people are born with a more
oblong shaped cornea that projects two points of light on to
the retina at the back of the eye. The resultant image
processed by the brain is blurred, the degree of blur
determined by the distance between the two points on the
retina. The closer the points are the less blurred the image
Pinhole glasses reduce the blur of astigmatism by
limiting the distance between the two points of light on the
retina, thus helping sufferers to see more clearly.
Cataracts are opacities that form on the lens of the eye,
often in later life as dead cells in the eye lens
accumulate. Cataracts are seen as white cloudy areas within
the pupil - a projection of the cataract on the lens which
is located immediately behind the pupil. People with
cataracts suffer from blurred vision, as the cataract
scatters light entering the eye, so preventing it from
focusing on the retina. The amount of light scatter is worse
when the pupil size is larger.
Pinhole glasses help to reduce light scatter by stopping
down the pupil to the size of the pinhole. Less light
scatter occurs, and vision is improved.
Computer Vision Syndrome (CVS)
More and more people now spend their days working at
computer screens. Many experience eye strain, headaches,
fatigue, dry eyes or blurred vision when using a computer
for lengthy periods of time. These complaints constitute
Computer Vision Syndrome, and businesses lose thousands of
dollars every month due to time off or sickness because of
Computer Vision Syndrome is attributed to the often harsh
light of the computer screen, the need of the user to
constantly focus on the screen, and the glare of office
lighting or lighting in the surrounding environment.
Anti-radiation screens, prescription 'computer glasses' and
ergonomically designed work environments are all solutions
to the problem, with varying cost implications and results.
Pinhole glasses offer an alternative solution that is extremely
affordable by comparison. The pinholes reduce glare by blocking
out extraneous light rays, and reduce the incidence of eye strain
by increasing the depth of field without the need for stressful
focusing accommodation. At just $14.99 pair they are an incredibly