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Table 2 Comparison of iris features between nanophthalmic and normal eyesa

From: Morphological features of anterior segment: factors influencing intraocular pressure after cataract surgery in nanophthalmos

  Nanophthalmic eyes
(N = 32)
Normal eyes
(N = 35)
P value
Extent of PAS
 0° (no PAS) 44% (14/32) 100% (35/35) < 0.001b
 0° to ≤90° 19% (6/32) 0
  > 90° to ≤180° 6% (2/32) 0
  > 180° to ≤270° 9% (3/32) 0
  > 270° to ≤360° 22% (7/32) 0
Grading of iris crypts
 1 63% (20/32) 49% (17/35) 0.447
 2 28% (9/32) 43% (15/35)
 3 9% (3/32) 9% (3/35)
 4 0% 0%
 5 0% 0%
  1. a Data are presented as percentages (proportions). χ2 test was used to test the distribution of the extent of peripheral anterior synechiae (PAS) and the grading of visible crypts
  2. b Statistically significant (P < 0.05)