3 Introduction
3.1 Main characteristics
ALADDIN is a multifunction medical device used for the detection of various biometric parameters,
particularly useful for the calculation of spherical, toric or personalized intraocular lenses. It records a wide
range of parameters, which are acquired by using different techniques.
Optical Biometry: by means of the low-coherence optical interferometry method, ALADDIN executes axial
length measurements (between 15 and 38mm).
Anterior chamber depth: slit light projection - by projecting a slit of certain characteristics onto the eye, you
can determine the length of the optical axis of the anterior chamber, a very important measurement for the
calculation of IOL.
Topography: the device acquires a topographic map of the patient of approximately 6,200 points using a 24-
ring Placido disk to show the description of the corneal surface. This measurement also provides a
Keratometry at 3mm, 5mm and 7mm 7mm (or at 2,4,6 mm depending on the settings) with the respective
corneal astigmatism.
Pupillometry: for an accurate calculation of intraocular lenses, the instrument has a set of LEDs onboard
that allows a measurement of Photopic, Mesopic and Dynamic pupillometry.
White-to-White: as a result of the corneal topography and by means of an internal software algorithm, a
white-to-white value can be obtained, i.e. the corneal diameter recorded at the limbus.
The software can give suggestions for the choice of intraocular lens based on several different formulae.
Similarly, a database of intraocular lenses is also implemented. Before the calculation is made, the data for
the desired lens must be entered.
ALADDIN also covers all the basic functions of corneal topography for recording some keratorefractive
parameters.
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