Topcon ALADDIN HW3.0, User Manual

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ALADDIN
- User manual Rev. 19 EN of 10/07/2019
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1 INTENDED USE
ALADDIN HW3.0 is intended for biometric determination of the following ocular measurements: axial length,
corneal radius, corneal cylinder axis, anterior chamber depth,
central corneal thickness, crystalline lens
thickness, white-to-white (WTW) and pupil diameter of the human eye. ALADDIN HW3.0 also measures
corneal topography.
For patients who are candidates for intraocular lens (IOL) implantation, ALADDIN HW3.0 also aids in the
calculation of the appropriate IOL power and type to be implanted.
ALADDIN HW3.0 is intended for use by physicians and eye-care professionals and may only be used under
the supervision of a physician.
1.1 Intended users
ALADDIN HW3.0 is intended for use by physicians and eye-care professionals (opticians, ophthalmologists)
and may only be used under the supervision of a physician.
For surgery and intraocular lens implantation, the device can only be used under medical supervision. For
the other applications, the device must be used by qualified personnel.
1.2 Places of use
The intended places of use are: health care centers, doctors' surgeries, operating theatres.
1.3 Contraindications
Patient could have a dazzle effect, after the exam, dues to the device lights, but it disappears in few minutes.
1.4 Description of functionalities
The ALADDIN HW3.0 is a combined device for the biometric measurements of ocular structures. The
measurements assist in the determination of the appropriate power and type of intraocular lens.
Below a summary of the device functions:
OPTICAL BIOMETRY - Measurement of the following ocular structures by means of the low-coherence optical
interferometry method:

Axial Length (AL): distance between the cornea and the inner limiting membrane.

Anterior Chamber Depth (ACD): distance between the anterior surface of the crystalline (anterior
capsule) and the outermost stratum of the cornea (epithelium), measured along the central axis
where the latter is biggest.

Central Corneal Thickness (CCT): distance between the outer stratum of the cornea (epithelium) and
the inner stratum (endothelium) on the central axis.

Lens Thickness (LT): distance from the anterior surface of the crystalline lens (anterior capsule) and
the posterior surface, measured along the central axis.
TOPOGRAPHY - Acquisition of the topographic map of the eye, through the reflection of 24 rings of the
Placido disk at a distance of 80 millimeters from the eye. The following measurement are performed:

Keratometry (KER): measurement of the curvature of the anterior surface of the cornea. Includes all
the basic functions of corneal topography (ketorefractive parameters and Zernike analysis).

White-to-White (WTW) or corneal diameter: horizontal distance between the borders of the corneal
limbus.