DEFECTS OF VISION
God has blessed us with a beautiful set of eyes with which we enjoy the worldly beauty and wonders every day. In a normal human eye, the image of whatever we see is formed on the retina (a photosensitive layer) on the innermost lining of the eye, with the help of a lens situated inside the eye.
POWER OF ACCOMMODATION OF THE EYES
Our eyes have the ability to visualize objects at different distances clearly. This is called as the power of accommodation of the eye.
Various eye muscles, eye lens and the fluids inside the eye ball help the eye to focus the objects clearly on the retina.
Whenever there is a defect in this process of accommodating objects, defects of vision start appearing.
TYPES OF EYE DEFECTS
Due to many factors when the eyes are not able to focus images properly, the vision becomes defective and there are problems in focusing the objects on the retina.
Depending upon the error in focusing, defects of eye vision are of many types:-
Let us here discuss each one of them in detail.
Myopia or Shortsightedness
Myopia or short sightedness is a visual eye defect in which there is difficulty in focusing the distant objects on the retina while the nearby objects can be clearly seen.
In such cases, the image of the object is formed in front of the retina and not directly on it.
Causes of myopia
Such defects of vision usually occur when the eye ball has either elongated or the corneal curvature has increased so much that the image of distant objects is falling in front of the retina and not over it.
It is the most common type of visual defect which is found in school children and most young people having vision defects.
This defect of vision is usually corrected with a pair of diverging or concave lens which help in focusing the objects directly on the retina.
With proper calculations the exact power of the lens required for correcting the defective vision can be obtained and normal eye function can be restored.
Hypermetropia or long SightednessHypermetropia or long sightedness is a condition of the eye in which distant objects can be focused clearly on the retina whereas, there is difficulty in focusing the nearby objects. The image of the distant objects in such cases is formed behind the retina.
Causes of hypermetropia
Hypermetropia may occur because the eye ball has curved too much or the focal length of the eye lens has increased beyond limit because of which the image of the objects is forming behind the retina, the normal destination of whatever we see through our eyes.
This defect of vision is usually corrected with the help of a convex correcting lens. The additional convergence of the light rays form the nearby objects with the help of converging lenses helps to focus the light rays coming from the objects directly on the retina.
Presbyopia or progressive far sightedness of old age is a condition in which the eye ball gradually becomes far sighted and the ability to see nearby objects gradually decreases. It is an ageing problem which continues to worsen with age.
Causes and correction/ cure:-
With ageing the flexibility of the crystalline eye lens decreases which causes progressive far sightedness with ageing. The ciliary muscles holding the eye lens in place also weaken with age.
Simple convex lens glasses can easily correct this defect.
With ageing, many people develop both myopia and presbyopia. They use corrective bi focal lenses which allows them to correct both the visions and see things correctly.
It is a defect of the outer curvature of the eye ball which is uneven making the eyes unable to focus objects at a distance.
Eyes are unable to focus images vertically as well as horizontally. As a result objects in one direction are well focused and appear clear while others in the perpendicular plane are blurred.
Cylindrical glasses are used in this case for correcting the vision.
Do natural supplements help in managing the problem?
Natural supplements do not offer a sure shot treatment for vision problems. What they do is they work towards uplifting the overall health standard of the person. It is a great way to manage health and wellbeing in people.
Planet Ayurveda's Natural supplements for healthy vision
These are made from pure, herbal extracts of Amalaki (Emblica officianalis). It is a medium sized tree that is widely found in the northern part of India. It is very popular in Ayurveda for supporting digestion.
The capsules can be taken in the dosage of 1 – 2 capsules, twice daily with plain water.
2. Amla Saar
It contains fresh Amla juice extracts diluted to suit the taste and health standards. Amla is one of the richest source of vitamin C which is required for maintaining healthy vision.
It can be used in the dosage of 20 ml twice a day after diluting in equal amounts of water.