Non-contact quantitative measurement of anterior chamber depthsNon-contact quantitative measurement of anterior chamber depths
SPAC continually measures the anterior chamber depths from corneal center to temporal periphery, and automatically evaluates the risks of the patient developing angle-closure glaucoma; a useful tool in screening for patients with angle-closure glaucoma or with the potential to develop one.

Extensive test program
①Anterior chamber depths
– Grading calculation
– Central anterior chamber depth
②Corneal radius of curvature
③Central corneal thickness
④Angle
⑤Anterior chamber volume
⑥Iridal radius of curvature** Iridal radius of curvature: Radius of the approximate circle formed by plotting measured points of iris curvature. Where the approximate circle is formed below the iris curvature (i.e. the vertex of the iris curvature is raised upward), “+” is displayed before the radius value, and “-“ is displayed before the value where the circle is formed above the iris curvature (i.e. the vertex of the iris curvature dips downward). While the values of iridal radius of curvature alone cannot be used for diagnosis of angle-closure glaucoma, they can be combined with other data to produce a more accurate diagnosis.
High-precision three dimensional image analysis
This original analysis program developed by Takagi makes instant and highly accurate three-dimensional image analysis possible. Unlike anterior segment OCT’s, there is no need for cumbersome setup. Placing a patient’s chin on the chinrest and pressing the Start button is all that’s required; measurement starts immediately and results are presented. SPAC’s ability to “quantify” data, that has been difficult to achieve with conventional examination methods, facilitates continued monitoring and follow-up of glaucoma patients.
Improved reproducibility
Scanner’s light source has been changed from visible light to infrared, and the number of measuring points has been doubled (compared to our conventional model); the new SPAC delivers data analysis of high reproducibility and accuracy more than ever before.
Monitoring patients over time
Monitoring patients’ angles over time is one of the crucial aspects in glaucoma management.The new SPAC has a database built in the main unit, allowing stored grading and angle information to be readily displayed in chronological graphs (selectable periods: 6 months, 1 year, and 5 years). This enhances the informed consent process, providing patients with comfort and reassurance as well as gaining their trust.
Easy operation with the touch of a screen
All operations from starting tests to ending tests can be performed at the touch of a 10.4” screen. Patient’s eye can also be aligned using the touch screen.Screen layout is intuitive, allowing examiners to perform hassle-free operation.
Easier paper loading
The new SPAC has eliminated the cumbersome process of feeding or threading the new paper roll through a slot; all examiner has to do is just drop the roll in and close the lid – another hassle-free feature.An external printer* can be connected to print out the results on A4-size paper.* Contact our sales department for details of connectable printers.
Anterior chamber depths in 3D images
Anterior chamber depths that have been continually measured from corneal center to temporal periphery can either be printed as per the previous SPAC model or presented in three-dimensional images. The latter method is useful in explaining the results to the patient.Test results can be printed on A4 size paper where the SPAC is connected to an external printer.

Source: http://www.takagi-j.com/ENG/product/Diagono/SPAC2/product_EN_dia_SPAC2.html