OCULUS Pentacam AXL User Manual

11 Measuring Procedure
32 / 85 Instruction Manual Pentacam® AXL (G/70100/EN 1121 Rev04)
 Phakic: Default status. Presence of crystalline lens.
 Aphakic: Absence of the crystalline lens. Correction of measured
axial length by +0.200 mm
 Pseudophakic (Silicone IOL or similar): IOL of silicone or similar
material implanted. Correction of axial length by +0.120 mm.
 Pseudophakic (Acrylate): Acrylat/Metaacrylate IOL implanted.
Correction of axial length by +0.110 mm.
 Pseudophakic, silicon-oil filled, after vitrectomy: previous vitrectomy
with a silicon-oil-filled vitreous. Correction of axial length by
-0,692mm
Consider past corneal treatments such as PRK, LASIK, RK etc., as
 special IOL power calculation formulas may be necessary.
Attention
Risk of incorrect measurement caused by unchecked plausibility
 Check both eyes on plausibility.
Recommended differences between both eyes should be below:
 Axial length AXL <0,3mm
 Curvature< 0,18mm equals approximately in 1D (based on a
refractive index of 1,3375)
 Difference of IOL power to reach emmetropia by same target
refraction <1D
The following conditions may influence the readings of the measurement
respectively make it impossible:
 Deep cataracts, opaque corneas in the optical center, severe fixation
problems.
Note: In pseudophakic eyes the anterior chamber depth is not declared
but it is possible to measure the anterior chamber depth in the
Scheimpflug images manually.
Default settings
 Start the Scan menu (fig. 10-1, page 27).
 Make sure that the button "Automatic Release" is activated.
 Make sure that the button "Request 6x Alignment" is activated.
If "Request 6x Alignment“ is activated, the axial length
measurement starts only if the patient is fixating correctly. The
measurement starts automatically. "Request 6x Alignment“
deactivated means: The axial length measurements are performed
without any interrupt.
"Request 6x Alignment“ is activated by default. Just deactivate
"Request 6x Alignment“ if the patient has strong problems with
fixation.
 Adjust the table height.

OCULUS Pentacam AXL Specifications

General

Brand	OCULUS
Model	Pentacam AXL
Category	Medical Equipment
Language	English