Table 2.

Agreed consensus recommendations for perimetry in childhood glaucoma.

Consensus recommendations
Minimum age for starting perimetry
Start simple static or kinetic perimetry from approximately 7 years of age (IQR: 6.75–7.25)
Start combined static and kinetic perimetry from 7.75 years of age (IQR: 7.5–9.5)
Assessing perimetric test quality
Automated measures of false positives, false negatives and fixation losses are useful in interpreting test quality
Poor quality is indicated by:
False-positive values over 15% (IQR: 12.5–20)
False-negative values over 20% (IQR: 12.5–22.5)
Fixation loss values over 15%, though these are susceptible to artefact
Patient behaviour should be assessed qualitatively (by examiner) and results always used in adjunct to quantitative measures
Test selection
Static
Use shorter algorithms (e.g., SITA FAST rather than standard)
Shorter algorithms are useful to train children before undertaking longer tests
Use either a 30 or 24° test area, selecting a smaller area (24°) if necessary to improve the likelihood of capturing useful information
Kinetic
In children with moderate/severe VF loss, quantify VF extent using kinetic perimetry
If co-operation with static perimetry is likely to be poor, attempt kinetic-only perimetry
Combined static/kinetic
Use combined perimetry where possible
Assessing progression
No fixed definition of progressive VF loss exists
Use of perimetry in routine clinical practice
When interpreting results in children with unilateral glaucoma, to aid monitoring of visual field progression, use fellow eyes as ‘controls‘
Assess fields routinely every 7.5 months (IQR: 6–11.25)
If there is suspicion of VF deterioration or poor IOP control, assess VFs more frequently
Assess with the same perimeter/algorithm throughout childhood