Shares of Glaukos Corporation (NYSE: GKOS), a mid-cap ophthalmic medical technology and pharmaceutical company, spiked by as much as 63.7% today on heavy volume.The spark? Glaukos shares are rising in response to the news that Novartis (NYSE: NVS) will voluntarily remove its rival CyPass Micro-Stent product from the market due to a lack of efficacy.