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Br J Ophthalmol 81:857-861 doi:10.1136/bjo.81.10.857
  • Original Article
    • Clinical science

Scanning laser polarimetry of the retinal nerve fibre layer in primary open angle and capsular glaucoma

Table 2

Reproducibility of the measurements before and after pilocarpine instillation (paired t test)

Coefficient of variation (%) of thickness and superior to inferior thickness ratio
Before pilocarpine treatment After pilocarpine treatment
Control (n=29) (1) POAG (n=27) (2) CG (n=13) (3) POAG (n=16) (4) CG (4) (n=8) p Value
Total circumference 3.2 4.7 3.9 4.0 2.6 p1–3=0.749
p2–4=0.462
Superior quadrant 4.3 3.7 4.8 2.9 4.3 p1–3=0.604
p2–4=0.615
Temporal quadrant 8.5 8.9 6.1 8.2 5.2 p1–3=0.608
p2–4=0.824
Inferior quadrant 4.8 6.3 3.0 7.3 3.1 p1–3=0.268
p2–4=0.590
Nasal quadrant 4.7 7.7 4.8 5.9 1.7 p1–3=0.303
p2–4=0.218
Superior to inferior thickness ratio 5.0 4.8 3.5 5.2 3.5 p1–3=0.132
p2–4=0.329
  • POAG = primary open angle glaucoma, CG = capsular glaucoma.

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