Zeiss Visual Field Analyzer HFA 710 FDT

Wipe the housing surfaces with a soft dry cloth

Clean the Patient Eyepiece window and Operator LCD Display window with a soft, lint-free cloth

Disinfect the Forehead Rest and Patient Response Button with a soft cloth

Ensure no cleaning or disinfection solutions seep into the seams in the housings or along the LCD display or into the user Buttons

Ensure no cleaning or disinfection solutions come into contact with the printer paper

Warning: This test requires trained personnel!

Threshold 20° ( THRESHOLD C-20)

Threshold Nasal 30° ( THRESHOLD N-30)

MOBS computer automated staircase thresholding procedure

Initial Contrast: p = 0.5% contrast level

Staircase completion consists of at least four staircase reversals as well as upper and lower staircase boundaries within 0.3 log10 units of each other.

MOBS threshold is calculated to be the mean of the last upper and last lower presentations satisfying the staircase completion criteria.

Warning: Use only appropriate heat-sensitive printer paper designed for Seiko Instruments 5000 series printer.

New roll of paper placed in the paper well

Leading edge of the paper placed onto the metal bar and pushed into the unit

Paper Access Door closed with paper sticking out through the slot

Note: The printer paper can be advanced by selecting ADVANCE PAPER in the results menu or in the FDT MAIN MENU.

Note: The printer paper is thermally activated, store it in a cool, dry, dark location.

Note: Do not use transparent adhesive tape on printed portions of the printout.

Supra-threshold 20° (SCREENING C-20 - 1)

• Contrast values: p = 1% (2 times), p = 0.5%, maximum contrast

• Supra-threshold 20° (SCREENING C-20 - 5)

• Contrast values: p = 5% (2 times), p = 1%, maximum contrast

• Supra-threshold 20° (SCREENING N-30 - 1)

• Contrast values: p = 1% (2 times), p = 0.5%, maximum contrast

• Supra-threshold 20° (SCREENING N-30 - 5)

• Contrast values: p = 5% (2 times), p = 1%, maximum contrast;