How long have Class IV lasers been used in Europe as of their FDA clearance in 2003?

The correct answer indicates that Class IV lasers were utilized in Europe for over 10 years prior to receiving FDA clearance in 2003. This timeframe aligns with the timeline of technology and medical advancements in laser therapies. Class IV lasers gained acceptance and began to be implemented in various clinical practices in Europe during the 1990s. By the time of their FDA approval, advancements and experiences associated with these lasers had already been accumulated, showcasing their efficacy and safety over a substantial period. This prior use in Europe established a foundational understanding of the technology that helped facilitate their approval and subsequent use in the United States.