From: Choroidal thickness and high myopia: a cross-sectional study and meta-analysis
 | No. of studies | WMD (random)(95 % CI) | Test for Heterogeneity | Test for Overall Effect |
---|---|---|---|---|
Instrument | Â | Â | Â | Â |
  All trials | 8 | −116.30 (−145.68, −86.92) | Q = 108.64, P <0.001 | Z = 7.76, P <0.001 |
  Heidelberg Spectralis | 4 | −141.03 (−159.43, −122.63) | Q =75.46, P <0.001 | Z = 15.02, P <0.001 |
  Zeiss Cirrus | 2 | −80.36 (−155.77, −4.95) | Q = 17.43, P <0.001 | Z =2.09, P =0.037 |
  Topcon 3D-2000 | 1 | −142.40 (−167.45, −117.35) | - | Z =11.14, P <0.001 |
  Nidek RS-3000 | 1 | −75.67 (−88.27, −63.07) | - | Z =11.77, P <0.001 |
The mean age of included subjects | Â | Â | Â | |
  All trials | 8 | −116.30 (−145.68, −86.92) | Q = 108.64, P <0.001 | Z = 7.76, P <0.001 |
   > 50 years | 3 | −128.19 (−143.37, −113.01) | Q =1.98, P <0.001 | Z = 16.55, P <0.001 |
   < 50 years | 5 | −109.56 (−152.64, −66.47) | Q =101.70, P <0.001 | Z =4.98, P <0.001 |