Need an Eyeglass

I need to buy for an eyeglass for me to protect my eyes and not to disturb by the sun on my driving early in the morning. One of my officemates told me about Zenni: the #1 online eyeglasses store which are Opticians don’t want give you PD data. I thought I can buy it through shopping mall but it is through Opticians keep you away from ZenniOpt which is glasses store.