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.

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. In this example, you ...

21 февр. 2022 г. · A diopter is a reciprocal metres. So you can see sharply up to 1/2 metre away. You need -2.00 diopter lenses to see to infinity. What does a -3.75 prescription translate into 20/20? What is -7.50 vision on the 20/20 scale? If my eyeglasses prescription is -1.50, what is my vision ... Другие результаты с сайта www.quora.com

24 окт. 2024 г. · A 20/20 score means that you can read the optotype 20 from 20 feet away (around 6 meters). In our calculator, we refer to vision impairment as ...

11 апр. 2024 г. · If a person has 20/20 vision, it means they can see at 20 feet what a person with normal vision should see at 20 feet.

4 мар. 2021 г. · What would my prescription (-9.50) be on that scale and how does it make sense? Simply: what is -9.50 in the 20/20 scale? Like is it 20/950??

22 апр. 2024 г. · The diopter calculator efficiently determines the optical power of a lens in diopters using its focal length.

10 сент. 2024 г. · I put together an approximate conversion here: https://pcoutcast.com/health/snellen-to-diopter-conversion-for-myopia/.

21 июл. 2022 г. · Our 20/20 vision for 2020 calculator will tell how likely you are to need to increase your prescription lenses rating based on your lifestyle.

Convert your Spectacles power into contact lens power in just 60 seconds. Please Select Your Vision Correction.