An optometrist must take a thorough patient history before fitting contact lenses to determine if they are a suitable candidate and to rule out any contraindications. The history gathering covers general information, ocular history, previous contact lens wear, medical history, lifestyle and current motivation for contact lenses. For children, the optometrist must consider their maturity and ability to properly handle and care for contact lenses independently. A thorough history is essential for diagnosis, treatment decisions and choosing the appropriate contact lens type and care regimen.