Optometrists use a keratometer to measure the small area of the cornea's apex, but they may also provide additional measurements to cover the curvature of your eye's entire front surface. Next, the optometrist will examine your eye's tear film and/or ask you if you experience dryness in your eyes and how often. Optometrist in Manhattan Beach you opt for must have the necessary qualifications and training to give you the best possible care.