Decot Classic Hy-Wyd. This company is well known for sport shooting glasses, but pool players use glasses the same way sport shooters do. They have an adjustable nosepiece that allows you to raise/lower the lenses to allow you to "look up" through the lenses while you are bent over the table, similarly to how sport shooters "look up" to track clays moving through the air.
http://www.sportglasses.com/cart/products/7/Classic Hy-Wyd with Spring Hinge Temples.htm
They also have ear pieces that wrap around the back of your ear, so they do not fall off when you bend over, unlike the other posts glasses.
Make sure you doctor dials in your prescription for the 4-12 foot range. Most optometrists will make your prescription to be sharpest at reading distance, which is no good for pool players.
In both contacts and glasses, having your doctor focus on the 4-10 foot range makes a BIG difference.
Just for your knowledge, the focal point of your lenses is moved up to be in the upper portion of your lense, as that is the portion of the lense you look through when bent over the table.
Stick with someone who is know for making these type of glasses. Your average optometrist will not know what you want unless you explain in nauseating detail what you are using the glasses for, and that you want to be able to see 4-10 feet.
I'd stick with Decot.
Russ