Automated Contrast Sensitivity Function System (ACSFS)

CTS from M&S is a fully-automated suite of protocols that can be customized for any study.

Key Features of the Automated Contrast Sensitivity Function System (ACSFS)

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Free Lifetime Technical Support

All CTS products come with a one-year warranty inclusive of all components. Extended service warranties can be arranged.

Our Commitment to You

We offer the most responsive service in the industry:

24-hour system replacement to keep your practice running smoothly and efficiently
Trained technical support personnel are readily available to answer all your questions
Real-time response during business hours, with personnel dedicated to complete customer satisfaction. When your practice has a need, it’s immediate. Not tomorrow, no half-answers, no excuses. We take your business as seriously as you do!

Conduct CSF testing at 18, 12, 6, 3 and 1.5 cycles-per-degree at either photopic or mesopic luminance levels
Contrast levels start at 0.3 log units above normative data allowing for expedited test time
Rotationally symmetric and randomly presented optotypes eliminate bias from the patient with non-rotational symmetric optical aberrations such as residual astigmatism, coma, trefoil, etc.
Replaces existing testing methods that are biased for with-the-rule aberrations such as vertical astigmatism, vertical coma, and biased against aberrations such as against-the-rule and horizontal coma
The system is precisely calibrated for both distance-to-subject and pixels-per-inch so that optotypes precisely follow ANSI Z80.21-2020 and ISO 8596:2017 regarding size
Background luminance is standardized and calibrated to 85 cd/m2 to comply with ANSI and ISO testing, with certification on brightness, contrast and color temperature
The system is designed with the maximum reponse time to eliminate the focusing effect and predetermined screen blanking time, and to allow the retina to refresh between displays
Average test time is less than 5 minutes per eye
Test time can lower to 2-3 minutes for existing patients by starting at 0.3 log units above previously stored values
Test results can be exported to any media file in any format for statistical analysis

The system is controlled by a high resolution tablet via a standard Bluetooth connection utilizing our CustomLink® technology
The testing mechanism interfaces seamlessly with CTS (Clinical Trial Suite) to allow the technician to follow the protocol as determined by the sponsor
The test begins with a two-entry training phase where the system will present a sinusoidal bullseye, then a blank disk, to ensure user and subject understanding
Based on the subject’s response, the technician presses the appropriate display and the training phase completes after both images have been entered correctly
The algorithm begins with preselected cycles-per-degree and the subject simply indicates whether they see the bullseye or not (blank)
Based on the subject’s response, the technician presses the bullseye or blank on the tablet
The algorithm advances until threshold is determined and then begins the next required cycle-per-degree as mandated by the sponsor protocol
Threshold is determined through each cycle, then presented at the completion of the protocol with a graph and normative data
Data can then be exported to any file for collection and interpretation

M&S Smart System® 20/20 USA All-in-One Computer

High-resolution 22” display
Designed and developed by M&S in Niles, IL
Manufactured in the USA (applies to SS-2020-USA)
Industrial grade componentry ensures longer product lifespan compared to computers built for the retail/consumer market
USA technical support based in-house at M&S in Niles, IL
Extended 3-year warranty

Touch-Screen Laptop