— Most Common Cause for Vision Loss
Eye disorder that
can occur with little warning is a cataract, which
is clouding of the lens within the eye. The lens is
composed of water and protein. The protein is arranged
so that light can pass through and focus on the retina.
If the protein clumps together, however, it starts
to cloud over a small area of the lens. In time, this
cloudy mass of protein — called a cataract — can grow
larger, making it hard to see. That's when it becomes
are painless. Often people with cataracts begin to
complain about glare. "When these people have
bright lights shined on them, their vision may drop
rather dramatically." Colors may seem faded,
and eyeglasses or contact lenses may need frequent
changing. People with cataracts may need increased
light to read.
the cataract worsens surgery may be necessary to remove
the cloudy lens and replace it with a new lens.
By the year 2020, there will be more than 12
million individuals in the 65 or older age group who
will probably need treatment for cataracts.
age, other factors that scientists believe may put
individuals at greater risk for developing a cataract
include heredity, alcohol use, smoking, long-term
exposure to high levels of the sun's ultraviolet rays,
some medications and systemic disorders such as diabetes.
lens of eye is an important part of seeing clearly.
It focuses light onto the retina. In cataract surgery,
the affected lens is removed and, therefore usually
needs to be replaced. Currently, there are three types
of substitute lenses: an intraocular lens (IOL), a
contact lens or cataract glasses. About 90 percent
of people who need to replace their lens choose an
IOL. Of them, about 90 percent achieve 20/40 vision
lens: An IOL is a clear synthetic lens
that is placed in the eye during cataract surgery.
It requires no care. With an IOL, patients have
better vision and won't feel or see the new lens.
A few people cannot have an IOL because they're
sensitive to the material the lens is made of,
their eye structure isn't suitable, or they have
certain other eye diseases.
Blindness– Global and Indian
- Approximately 314
million people worldwide live with low vision
- Of these, 45
million people are blind and 269 million
have low vision.
- Low vision of 145
million people is due to uncorrected refractive
errors and could be restored with eye glasses.
of blindness is avoidable - i.e. readily treatable
- 90% of blind
people live in low-income countries.
- An estimated 1.4
million children under the age of 15 are blind worldwide.
- In some developing
countries, up to 60% of children die within
a year of becoming blind, either from the condition
that caused the blindness (such as measles and vitamin
A deficiency) or from inadequate care as families
affected by poverty struggle to look after a disabled
- Blindness is both
a cause and a result of poverty. Adults and children
living in poverty are more likely to suffer from
malnutrition, poor water quality and inadequate
sanitation. This places them at much higher risk
of contracting eye diseases.
- Around three-quarters
of the world’s blind children live in developing
countries in Africa and Asia.
- The annual global
economic impact of blindness is estimated at US$45
- Women face a significantly
greater risk of vision loss than men.
- Nearly two thirds
of blind people worldwide are women & girls.
- About 28000
new cases of cataract are reported everyday
India has the
greatest number of blind people in the world and
currently about 19 million blind people
live in India of which 80% live in rural
and slum areas. Unfortunately, this number is
The problem is
acute in the rural India particularly in the age
group of 60 years and above.
Backlog of patients
suffering from eye – diseases especially cataract
is huge and increasing and unfortunately Govt.
Hospitals / eye surgeons in the districts are
not able to cope with this challenge.
from remote and backward areas to cities where
hospitals are situated prevent patients to receive
/Nursing Homes are beyond the reach of general
masses to afford financially.
Most of the agencies
working in this field are reluctant to reach out
the rural and slum population.
blindness is the effect of old age and it is not
curable. Also poor and old people have fate and
destiny solace when becoming blind.
Because of devaluation
of old tradition, there is general
apathy from family members towards aged parents,
grand parents to take care of them for treatment.