Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 – Operators Manual
Rev. No 01
Page 27 of 126
Section 4
PRINCIPLES OF OPERATION
4.1
General Description
The Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 Laser system is
an Ophthalmic Laser suitable for performing the following clinical procedures:
Retinal Photocoagulation
Pan Retinal Photocoagulation
Endo photocoagulation
Macular Treatments
Laser Trabeculoplasty
The Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 Laser system has
two wavelengths of 532nm and 670nm which are in the visible spectrum for Green in
532 and Red in 670
.
A red aiming beam is used to position for treatment of Green or
Red light beam prior to delivery.
The word LASER is an acronym for “Light Amplification by Stimulated Emission of
Radiation”. The light from a laser has particular characteristics, which makes it a
valuable tool for medical applications.
The beam from a laser is collimated which means that the beam does not
diverge and can maintain a constant diameter over a long distance. This
means that the Laser beam can be focused to a very small spot with high
energy and power densities.
The beam is Monochromatic, which means that it is a single wavelength
beam and therefore the effects of the beam on tissue are very predictable
and reproducible.
The light waves are coherent which means they are in phase with each
other and do not interfere and generate losses in energy.
The Multi-Wavelength Pattern Scanning System - LightLas 532 / 670 system consists
of a laser console where the Green and Red laser are housed along with the
electronic control system and power supplies and accompanies along with various
Laser Delivery Units (LDU’s). These LDU’s include:
Slit lamp Integrated into CSO model SL980
Laser Indirect Ophthalmoscope (LIO) using a Keeler II
Endo photocoagulation hand pieces (Endoprobes)
When using these LDU’s a microscope Doctor Safety Filter (DSF) is required to
protect the doctor from unexpected reflections causing eye injury during the
treatments. The DSF is mounted in the beam path of the microscope.
