Laser medicine

analysis of laser image in medical & Engineering application and its harmful effect on human eye Wavelengths of commercially available lasers. Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the I. Introduction Fig1. Laser effect on eye Laser stand for Light

Photodynamic therapy (PDT) is a form of phototherapy that consists of 3 main components; photosensitizers (light sensitive molecules), light and oxygen. Currently, PDT is being used as a treatment modality for a variety of specific tumours, skin diseases, and precancerous and non-cancerous diseases . The minimally invasive and localised treatment utilize components that are non-toxic when used independently. The effects of PDT include damage to tumour vasculature, direct killing of tumour cells via

In the past, the applications of light, more specifically laser, in health and clinical applications have been focused on its destructive phototoxic effects. This effect is associated with high energy radiation, whereas low energy radiation has been found to induce a stimulating effect on the cells. The heat inducing laser tissue ablation effect used in surgery and the disinfectant-antimicrobial effect of light therapy are distinctly different from the beneficial healing response stimulated by photobiomodulation

Laser Cookbook by Gordon McComb (1988) explains the idea of lasers, staring by how they work, form of lasers and how lasers are tremendously being used these days. My research question “How lasers are powerful flashlight” is being specifically answered and explained by the relevant information in this book. McComb is a professional author. The biography at the end of book his demonstrates his proficiency in his field of writing book that are about science and technology. McComb has be writing books

get the bad tattoo removed or to get them covered up with a bigger tattoo. Many times removal of a tattoo is associated with laser removal, but there are many other ways to remove tattoos. When a tattoo is removed using a laser, the laser breaks the ink down on a molecular level to allow for the immune system to break the ink down and properly dispose of from the body. The laser treatment is easiest when the tattoo is black.

infection or complications. Sometimes people’s bodies will reject certain colors. Tattoo-related infections aren’t common, but they do happen,” says Dr. Daihung Do, an instructor in dermatology at Harvard Medical School and director of cosmetic and laser surgery at Beth Israel Deaconess Medical Center. “They can take various forms—I once saw a patient who developed warts as a result of a tattoo.” (Skerrett, 2012). A tattoo artist that does not use sterile techniques can spread bacteria or other infectious

Photodynamic therapy (PDT) is a treatment that uses a drug, called a photosensitizer and a particular type of light. When photosensitizers are exposed to a certain wavelength of light, they produce a form of oxygen that kills nearby cells. Photodynamic Therapy is also a potential therapy for cancer treatment. Photosensitizers are generally classified as porphyrins or non porphyrins. First generation photosensitizers include hematoporphyrin derivative and Photofrin. A number of second generation

Attending a laser light show can be beautiful, fun, and maybe even dizzying. The audience may be dazzled by the twisting and turning colors, but how much of the crowd actually knows how lasers operate? Light, color, vision, and the electromagnetic spectrum can explain how lasers and the captivating shows are possible. In order to understand laser shows, you need to understand lasers. The first working laser was created by Theodore Maiman, who placed a ruby rod, a fully reflective mirror on one end

and technologies are already making their way into all aspects of dental practice and have changed the traditional approaches, which require that students and practitioners receive the necessary knowledge.1 Dental laser is one of the most significant developments in modern dentistry. Lasers were introduced into the field of Dentistry in 1960s, with the hope of overcoming some of the drawbacks posed by the conventional methods of dental procedures.2 Conventional methods of cavity preparation with low

Radiation is energy emitted from a source. It has the property to ionise when it has such a high energy, that at the moment it interacts with an atom, it can remove tightly bound electrons from its orbit, causing the atom to become charged (ionized). The ionising effect of X-rays allows them to damage the DNA in cells and divide cells in the body. This property is used it the cancer treatment. When a person has cancer, their cells divide uncontrollably because of changes in their DNA, forming tumours: