A small hole in a glass window usually means someone with a BB gun was pointing and shooting it in the wrong direction. The hole is round and perfect and doesn't look that bad. At least not bad enough to pay a glass specialist or a window repairman to fix it. Besides, if you put in an insurance claim for the damage, your rates will probably go up. Consider a quick, simple way to fix the hole.
Purchase a fresh bottle of clear fingernail polish.
Dab some nail polish in the hole in the glass with the brush, and let it dry completely.
Repeat step 2 until the layers of hardened fingernail polish are even with the surface of the glass on both sides. Don't rush the drying time between consecutive layers of polish. If the hole is filled properly, it should be invisible to the eye.
Robert Gray has been writing full time since 1995. His first photography book took seven years to research and publish. He specializes in writing on photography and the arts. He's written for Photography Magazine, Large Format Camera Magazine and many online art and photography websites and blogs.