Grow rooms have lots of light, but its not broad spectrumgreat for plants, but not your eyes. The rods and cones in your eyes need broad spectrum light to focus, see shapes, notice movement, and see colour. Sunglasses make things worse by darkening all the light, so you squint less, but you still cant see colour, and its even more difficult to focus. Other grow glasses attempt to colour balance the extreme light spectrum but use cheap plastic lenses with very poor clarity that distort light and are hazy or blurry.
With cheap grow room glasses, your eyes and brain work overtime to compensate and you can experience fatigue, see spots, get headaches and in some cases experience damaging UV radiation.Your eyes and health are very important. So is getting the most out of your grow. Dont risk using sunglasses or cheap grow room glasses!