No that's not correct, it's just a perception. India is not even top ten of the most corrupt country.
The most corrupt country in the world is Somalia whereas New Zealand is the least corrupt country.
See the complete list of the least to most corrupt countries (India is 79th least corrupt or 96th most corrupt country of the world as of 2017) -
What transparent, biconvex structure changes shape to change the focal distance of the eye so that it can focus on objects at different distances?