i am -4 and lost my glasses; however, i still keep my -2 glasses.
on a sunny day, outdoor, the -2 glasses works just fine. not 99% eagle eye precision, but like 90% precision, overkill to see car plates and directions.
does the intensity of light from sun cut -2 from -4 requirement?
on a sunny day, outdoor, the -2 glasses works just fine. not 99% eagle eye precision, but like 90% precision, overkill to see car plates and directions.
does the intensity of light from sun cut -2 from -4 requirement?