Oil Immersion

Positives

Established device
Robust
Excellent image quality

Negatives

Interface medium required
Time consuming
Naked eye pre-selection of lesions
Cross contamination?

Heine Delta 20

Robust
Rechargeable
Bright image
22mm field of view
10x magnification

Dermlite II Fluid

Compact
Rechargeable
Very bright image
25mm field of view
10x magnification

Cross-Polarised Devices

Positives

Portable
Quick to examine lesions
No interface medium required
No need for naked eye pre-selection of lesions
Brighter images with newer devices

Negatives

Early devices poor quality image
Less Robust
Expensive
Polarisation creates a different image to conventional oil immersion devices
Image brightness less than oil immersion devices

Dermlite DL-100

Poor quality image
8 LEDs
Non-rechargeable
15mm field of view
10x magnification

Dermlite Platinum

Poor quality image
8 LEDs
Non-rechargeable lithium battery
15mm field of view
10x magnification

Dermlite Pro-DPR

Brighter image
16 LEDs
Rechargeable lithium-ion battery (external)
15mm field of view
10x magnification

Dermlite Pro II HR

Bright image
Rechargeable lithium-ion battery (internal)
Variable image brightness with 16 or 32 LED's
25mm field of view
10x magnification

Dermlite Hybrid

32 LED combined cross-polarised and oil immersion device
24 LED's for cross-polarised image
8 LED's for oil immersion
Advantage - both cross-polarised and oil immersion structures can be seen
Disadvantage - image not as bright as the non-combination devices alone
Rechargeable lithium-ion battery (internal)
25mm field of view
10x magnification