الفهرس 
Principle and Technology of PentacamOnly 14 pages are availabe for public view
 |  | from | 116 |  |  |
| | | from | 116 | | |
Abstract
The Pentacam is a rotating Scheimpflug camera which
captures Scheimpflug images of the anterior eye segment.
The Scheimpflug technique provides sharp and crisp images
that include information from the anterior corneal surface to
the posterior crystalline capsule.
The rotating camera supplies anterior segment images
in three dimensions, creating a movable three-dimensional
presentation of the anterior chamber. The centre of the cornea
is measured very precisely because of this rotating imaging
process, which takes less than two seconds and corrects the
slightest eye movements.
The Pentacam allows fast, noncontact examination of
the anterior eye segment while the patient is sitting in front of
the camera, thus providing good patient comfort and
preventing application of local anesthetics and corneal
erosions.
Summary and Conclusion
88
The pentacam is the only instrument that measures and
analyses the center of the cornea precisely. This offers a
significant advantage in accurate corneal topography
measurements prior to refractive surgery. For calculating
corneal thickness, the camera measures from the top of the
epithelium to the anterior surface of the endothelium. So
pentacam is indispensable pre and post-refractive surgery.
The Pentacam calculates a three dimensional
mathematical model of the anterior segment to provide the
following information:
Anterior and posterior corneal topography and
elevation maps
Corneal pachymetry from limbus to limbus
3D-chamber analyzing (ACD-map, chamber
angle, chamber volume etc.)
Lens density (quantification of the light
transmittance of the crystalline lens and IOL’s)
Improved IOL-calculation for post LASIK and
PRK patients.
Summary and Conclusion
89
While summing up all the features of the Pentacam is
the optimum analyzer for:
Corneal refractive surgeons
Cataract refractive surgeons
Glaucoma screening