EYE ON THE EYE
The God or the nature has given us wonderful eyes. The lens inside the eye is so flexible, changes its shape according to the distance of the object seen with the help of certain muscle fibers by which it is suspended. Over the age the muscle fibers looses their elasticity, becomes fatigue and the reaction time is delayed. The delayed signals irritates the brain to be recognized, which results emotional imbalance.
“The lens is flexible and its curvature is controlled by ciliary muscles through the zonules. By changing the curvature of the lens, one can focus the eye on objects at different distances from it. This process is called accommodation. At short focal distance the ciliary muscle contracts, zonule fibers loosen, and the lens thickens, resulting in a rounder shape and thus high refractive power. Changing focus to an object at a greater distance requires the relaxation of the ciliary muscle, which in turn increases the tension on the zonules, flattening the lens and thus increasing the focal distance.”
WHERE THE GRANDMA SPECS HAVE GONE?
If this lens become opaque, vision loss occurs and warrants removal. In those days our grandparents underwent complicated surgery for such cataract and even they were asked not to shake their head and the head was supported by sand bags. They had to wear a thick glass specs which was often referred as ‘soda bottle bottom glass’
Today the new generation Grandma/pa wears a man made lens inside the eye called I.O.L (intra ocular lens) which avoids one to wear such thick glass and the surgical technique is so advanced and makes one to feel as though getting into a beauty parlor!