Table 1 Clinical characteristics of the study patients.

From: Relationship between preoperative high intraocular pressure and retinal nerve fibre layer thinning after glaucoma surgery

Clinical characteristic

 

Age (y)

55.4 ± 13.6 (18–75)

Sex (male/female)

45/15

Best-corrected visual acuity (logMAR)

0.1 ± 0.2 (−0.3–0.3)

Spherical equivalent (D)

−1.4 ± 1.9 (−8.5–2.0)

Axial length (mm)

23.6 ± 1.7 (21.6–27.4)

Central corneal thickness (µm)

538.2 ± 33.3 (486–606)

Disc area (mm2)

2.2 ± 0.4 (1.52–2.98)

Disc haemorrhage presence, n (%)

5 (8.3)

Diagnosis, n (%)

  Primary open-angle glaucoma

29 (48.3)

  Chronic angle-closure glaucoma

9 (15.0)

  Uveitis associated glaucoma

9 (15.0)

  Pseudoexfoliation glaucoma

8 (13.3)

  Steroid induced glaucoma

5 (8.3)

Preoperative peak IOP (mmHg)*

37.4 ± 10.8 (20–58)

Average RNFL thickness (µm)

75.6 ± 17.7 (54–112)

Average GCIPL thickness (µm)

66.7 ± 12.6 (45–97)

Mean deviation (dB)

−19.3 ± 9.6 (−31.0–−1.5)

Pattern standard deviation (dB)

6.5 ± 3.1 (1.72–15.3)

Visual field index (%)

54.3 ± 33.2 (2.0–98.0)

Follow-up period (months)

12.4 ± 1.2 (10.0–15.0)

  1. logMAR = logarithm of the minimum angle of resolution, D = dioptres, IOP = intraocular pressure, RNFL = retinal nerve fibre layer, GCIPL = ganglion cell layer plus inner plexiform layer.
  2. Continuous variables are expressed as means ± standard deviation (range).
  3. *The highest IOP among those measured between 1 month and 1 day before surgery.
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