Understanding Medical Optics

Common medical optical devices and their applications mainly include lasers and optical lenses, which have a wide range of applications in the medical field.

Laser Devices and Their Applications:

1. Carbon Dioxide (CO2) Laser: Wavelength of 10600nm, power generally between 10-50W. Mainly used for removing superficial benign skin growths and tumors, such as common warts, condyloma acuminatum, seborrheic keratosis, etc. Additionally, CO2 lasers can be used to treat skin ulcers, pruritus, and other conditions.

2. Helium-Neon (HeNe) Laser: Wavelength of 632.8nm, power generally between 10-40mW. Mainly used to improve skin microcirculation, promote tissue recovery, reduce inflammatory responses, and provide pain relief. Suitable for skin ulcers, alopecia areata, herpes zoster, and its sequelae.

3. Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) Laser: Wavelength of 1064nm, power generally between 10-80W. Mainly used for treating vascular proliferative lesions, such as cavernous hemangioma, lymphangioma, etc.

4. Indium Gallium Arsenide Phosphide (InGaAsP) Semiconductor Laser: Wavelength of 980nm, power generally between 10-30W. Mainly used for treating vascular proliferative skin diseases.

5. Low-Power Semiconductor Laser: Typically used in low-power semiconductor laser therapy, with similar indications to Nd:YAG lasers.

Optical Lenses and Their Applications:

1. Optical Lenses in Ophthalmology: Used in fundus cameras, corneal microscopes, retinal laser scanners, etc., to help doctors examine and treat eye diseases.

2. Endoscopes: Including rigid endoscopes (such as arthroscopes, laparoscopes, thoracoscopes, etc.) and flexible endoscopes (such as gastroscopes, duodenoscopes, etc.), used to examine and treat diseases of the gastrointestinal tract, respiratory tract, urinary tract, and other areas.

3. Dermatological Diagnosis and Treatment: Optical lenses are used to examine the range, depth, and tissue structure of skin lesions, and can also be used in laser and phototherapy to treat skin diseases such as melanoma and skin cancer.

Other Applications of Lasers in Medicine:

1. Laser Vision Correction: Adjusting the curvature of the cornea with a laser beam to help patients restore vision.

2. Skin Cosmetic Treatment: Using laser energy to remove surface blemishes such as spots and wrinkles.

3. Tumor Resection: Achieving minimally invasive tumor removal with precise laser beams, reducing patient pain and improving treatment outcomes.

4. Cardiovascular Applications: Including non-invasive diagnostics and minimally invasive treatments, providing a safer and more effective medical experience.