To convert to 20/20-based, you divide 20 by the distance you read from and then multiply that to the second number of the line you read.

26 июл. 2019 г. · It is going to take about 2.5 diopters of correction… assuming that you have no other errors in your eyes than myopia. How to convert diopters to 20/20 vision - Quora My vision acuity is 20/200, is that legally blind? - Quora What can cause 20/200 vision? - Quora Другие результаты с сайта www.quora.com

21 нояб. 2024 г. · The 20/200 prescription equivalent is -2.5. Visual acuity is based on how well you can see out of your best eye and with standard corrective ...

23 авг. 2021 г. · 20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet.

20/200. +4.75. +4.00. +2.50. 20/70. Page 2. Instructions for: Conversion Chart ... >This example indicates a 2.50 diopter variance in refractive power,.

19 сент. 2024 г. · With 20/200 vision, you can see at 20 feet what a person with 20/20 vision sees at 200 feet.3 Or, your 20-degree field allows for seeing ...

17 сент. 2024 г. · If during an eye test you can read the big E at the top of the eye chart, but none of the letters below that, your vision is considered 20/200.

10 июл. 2023 г. · Someone with a best corrected visual acuity result of 20/200 is considered legally blind. ... diopters of nearsightedness with 1.5 diopters ...

Someone is considered to be legally blind when visual acuity is 20/200 or worse in the better eye after correction, and/or a visual field of 20 degrees or ...