A few days ago I received the Knobloch Lens Testing kit from Illingworth Imports. here is a photo of the kit along side a pair of Knobloch glasses and my own pair of Knobloch shooting glasses.
The lens kit comes with the test lens holder, 12 test lenses for testing spherical correction, and many accessories such as a centering device, an adjustable iris etc.
Below is what my pair looks like with a left eye side blinder and an adjustable iris.
The left eye blinder lets me keep both eyes open while shooting, the white color helps to control the amount of light going into both eyes. The adjustable iris is just a nice add on, letting me close the amount of area I look through down to the size of a pinhole or as large as 15mm. This lets me control the amount of light I want going into my eye and the amount of sharpness around the gun sights.
Finally, this is what they look like on me. I actually don't see much when I'm shooting. I look at the front and rear sights and don't really focus on the target itself (the target is actually blurry when I shoot at it).
Less than a month until the Canadian National Pistol Championships!