Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



A presentation about lasers, their types and uses in dermatology.

Karim Abo El-Ela

on 15 May 2012

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Lasers

Karim Mahmoud Abo El-Ela L ight
A mplification by
S timulated
E mission of
R adiation &
Dermatology Does it have to be
visible light? The Different Modes Continuous Mode
Pulsed Mode
Q-Switched Mode So what are the components
of a laser? Let's take a look at
how it works! Provides initial energy
to the laser using means
such as electric discharges,
flash lamps and chemical reactions. Can be:
liquid [dye lasers]
gas [Carbon Dioxide, Argon]
solid crystals/glass [YAG, Sapphire]
semi-conductor [laser diode] Relating lasers to
dermatology. Main uses of lasers in cosmetic surgery
include: Fine Lines and Wrinkles
Skin Tightening
Pigmented Lesions
Precancerous Lesions
Vascular Lesions
Tattoo Removal
Hair Removal
Acne and Acne Scars
Warts and Mole Removal Ablative Non-ablative Affects the top layer of the skin. Works on the deep part of the skin
leaving the surface untouched. Carbon Dioxide

Er:YAG Diode
Pulsed Dye
Nd:YAG Selective Photothermolysis Light Heat Destruction Water Melanin Hemoglobin How does it work? Addressed through different colors. Uses Produces Executes Water affects the collagen and elastin fibers, tightening the skin. Targets: Melanin for whitening and hair removal. Hemoglobin for vascular treatments. Safety It is very important that laser embedded devices are used by qualified users who know all the safety precautions.

Laser devices should be turned off when
not in use and should never be aimed
directly towards the eyes of any
living creature as it may
permanently damage them.
[except LASIK by professionals] Thank You for your time. Stimulated Emissions? Deeper??? Chromophores?? beta-Carotene chemical structure Beyond Visibility Fluence/Power Intensity The rate a number of particles intersect with a unit area. Main Considerations:

Diagnosis of problem
- Target

Type of laser
- Wavelength
- Ablative/Non-Ablative

Power vs Time vs Comfort
Full transcript