Certified Ophthalmic Medical Technologist (COMT) Practice Exam

The YAG laser operates at which wavelength?

1. 532 nm

2. 1064 nm

3. 700 nm

4. 810 nm

The correct answer is: 1064 nm

The YAG laser, specifically the neodymium-doped yttrium aluminum garnet (Nd:YAG) laser, operates at a wavelength of 1064 nm. This is a commonly used wavelength in various ophthalmic procedures, particularly for posterior capsulotomy and iridotomy. The 1064 nm wavelength is in the infrared spectrum, allowing it to penetrate tissue effectively while minimizing damage to surrounding structures. Understanding the specific wavelength of the YAG laser is crucial for clinical applications, as it determines the absorption characteristics of the tissues it interacts with. For instance, the absorption properties of this wavelength make it suitable for targeting melanin in the iris and for procedures involving the lens capsule. Different wavelengths have different applications in ophthalmology, highlighting the importance of utilizing the correct laser for specific procedures.