Pro-Laser has agreed in principle to acquire the EyeSys corneal topography division of Premier Laser Systems, which has been under Chapter 11 bankruptcy protection since last March, and the transaction should be completed by Dec. 8. The Israeli firm has also signed separately a letter of intent to merge Premier into Pro-Laser, subject to approval by the bankruptcy court and other conditions. Premier would contribute more than 3,700 EyeSys customers and 3,500 Premier shareholders.