i want to buy prescription swimming goggles on line but dont under stand the prescription, can u help?
when ordering on line it askes for the strength but i dont know which number it is to use for the strength, my prescription reads as
right eye- sph -475, cyl -050, axis 100
left eye- sph -475, cyl 100, axis 90
so which number is for eye strength
but online all it asks for is the strength. i dont know which number is the strength number?
The SPH & the CYL numbers are all part of the power, that is used for spectacles.
For swim goggles, the CYL isn't needed because water counteracts the astigmatism.
Goggles don't come in .25 strengths either, so you have to round it off to the closest .50...it's better to go weaker than stronger, so you should order a - 4.50
Sharkman Swim Set 90's Commercial
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£37.50
