Slit lamp bio
microscope
LECTURE NO (4)

Components:
Observation system
Illumination system
Mechanical system
Optical principle
Objective lens
Eyepiece

Inner eye technique:
 Inner eye technique:
 Hruby lens
 90.00 D lens
 Three mirror lens
 Intra ocular pressure:
 Goldman a planation tonometer

Apertures:
Diffuser
Cobalt blue
Red free
Neutral density
Yellow filter

Illumination methods:
 Diffuse illumination
 Direct focal illumination
1. Parallel piped
2. Optic section
 Indirect illumination
 Retro illumination
 Sclerotic scatter
 Specular reflection