Vision acuity is well-considered through the Snellen chart. The Snellen chart consists of letters that are progressively displayed in a smaller size in the chart. A vision is considered to be normal or accurate when the result indicates a VISION 20-20. In some of the cases, Snellen chart my not be used, instead “Tumbling E” eye charts are used.
The grounds behind using the “Tumbling E” eye chart though it follows the same scale standards are, some people are not capable of reading the letters that are depicted in the Snellen chart. The small children who are shy or may not know every alphabet may suffer. Using the “Tumbling E” eye chart, which holds every letter in capital E but in different angles and sizes, resembles this problem.
Vision 20-20 instructs that the vision of a person is normal, which means they can read a letter placed at 20 feet. There are different levels of vision of eye such as 20-40.20-80, 20-100. In many instances of an eye-test, whenever a patient can read the topmost letter of the chart but fails to recognize the lower letters, his vision is marked as poor vision. A vision of 20-100 is considered and marked as the poor eye-sight vision. A person holding the vision 20-20 can see the objects 1/10th large as someone holding the vision of 20-100.
If the letter placed at 20 feet seems to be invisible or blur, you need to visit the doctor immediately. Mumbai’s best eye doctor, Dr. Nikhil Nasta, examines your eye very precisely and treats the refractive errors accurately. He has a specialization in LASIK surgery and is known as one of the best LASIK surgery doctors in Mumbai.
The significant eye examination by Dr. Nikhil Nasta can diagnose what is daunting your eyes to reach the vision of 20-20. He is inch-perfect and will concretely prescribe you glasses, contact lense or even a vision therapy that will help you to improve your vision. Visit the eye doctor in Mumbai, Dr. Nikhil Nasta and acquire your optimum treatment.