What MD rate indicates rapid glaucoma progression?

MD rate >-1.0 dB/year is considered rapid progression. MD rate -0.5 to -1.0 dB/year is moderate. -1.0 dB/year in patient <60y requires aggressive treatment.

How many visual fields are needed to establish a trend?

At least 5-6 reliable visual fields over 2-3 years are needed to establish a statistically significant MD trend (R2 analysis). Faster rates can be detected earlier. 2 consecutive VFs meeting progression criteria (GCP or event analysis) support action.

What is the relationship between IOP reduction and VF progression rate?

Advanced Glaucoma Intervention Study (AGIS): IOP consistently <18 mmHg reduced VF progression to near zero. Every 1 mmHg IOP reduction decreases glaucoma progression risk by approximately 10%.

Glaucoma Visual Field MD Rate of Change

Assess glaucoma progression using mean deviation (MD) rate of change on Humphrey visual field (HVF). MD worsening >-1.0 dB/year indicates rapid progression requiring treatment intensification.

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Glaucoma Visual Field MD Rate of Change

Frequently Asked Questions

What MD rate indicates rapid glaucoma progression?

How many visual fields are needed to establish a trend?

What is the relationship between IOP reduction and VF progression rate?