COMPASS Fundus Automated Perimetry

Compass Fundus Automated Perimetry

Fundus Automated Perimetry

Fundus automated perimetry is a technique that images the retina during visual field testing, enabling a correlation to be made between visual function and retinal structure.1

Advantages of Fundus Automated Perimetry over Standard Automated Perimetry include the possibility to measure sensitivity at specific retinal locations, higher accuracy thanks to retinal-tracking based compensation of eye movements and the simultaneous assessment of function (expressed by retinal sensitivity) and structure (images of the ONH, of the RNFL and of the retina). Fundus Automated Perimetry provides a simultaneous, quantitative assessment of fixation characteristics.

Use of Fundus Automated Perimetry in the clinical management of glaucoma has been limited so far, as available systems were lacking compliance with the standards of automated perimetry. COMPASS overcomes such limitations and brings visual field analysis to the next level!

In particular COMPASS, for the first time, extends field coverage to 30° + 30° and employs luminance parameters and a sensitivity scale as used in standard automated perimetry.


  • High-resolution TrueColor Confocal Imaging of the ONH, of the RNFL and of central retina
  • Combined structure and function analysis
  • High test – retest repeatability thanks to the Real Time Retinal Tracking, that actively compensates eye movements
  • Reliable automated follow up with combined structure-function progression analysis
  • Comprehensive printout
  • Operator friendly: no trials lens required, automatic refractive correction
  • More patient comfort: test can be suspended at any time without data loss

 How to read the report


The above information on this page is copied from the company website


Glaucoma Staging System 2 (Brusini)

The enhanced Glaucoma Staging System (GSS 2) of Brusini classifies visual field defects based on the perimetric indices MD (Mean Deviation) and PSD (Pattern Standard Deviation). The representative point of the examination is placed in a chart according to the values of these indices. The chart displays defined areas for the different stages of disease (Stage 0 – Stage 5) and separates generalized, localized and mixed defects.


Glaucoma Staging System 2 (Brusini)

Stage Gravity and Visual Field Findings
“S0” Completely normal field of vision
Border Very mild defect, often not statistically significant
S1 Slight defects, such as small relative paracentral scotomas
S2 Moderate defects, such as nasal step, scotomata of limited size, etc.
S3 Occurring defects, as fascicular absolute scotoma
S4 Very advanced and absolute defects, affecting at least 2 quadrants
S5 Sub-terminal defects, with small islands of residual sensitivity

MD = Mean Deviation (Humphrey, Oculus) or Mean Defect (Octopus), CPSD = corrected pattern standard deviation, CLV = Corrected Loss Variance (Octopus), LV = Loss Variance

PSD (left) and LV (right), can be used when the corresponding correct indexes are not available or in the case of high values ​​of the short-term fluctuation (SF), in which the value of CPSD is 0.

Tags: Brusini, CLV, Corrected pattern standard deviation, CPSD, glaucoma, glaucoma staging, GSS2, loss variance, LV, MD, Mean defect, Mean deviation, PSD, visual field

Glaucoma Staging System 2 (Brusini)


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