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Table 2 Comparison of the Demographic and Clinical Characteristics of Emmetropic.Eyes. Myopes with AL < 25 mm and Myopes with AL > 25 mm

From: Diagnostic ability of OCT parameters and retinal ganglion cells count in identification of glaucoma in myopic preperimetric eyes

Parameters

Emmetropes

Myopes AL < 25 mm

Myopes AL > 25 mm

P-value

P-value for t test between groups

     

Emmetropes vs Myopes AL > 25 mm

Emmetropes vs Myopes AL < 25 mm

Myopes AL > 25 mm vs Myopes AL < 25 mm

Eyes (n)

50

51

53

    

Age (y)

58.92 (8.67)

57.94 (10.76)

57.89 (11.36)

0.85*

0.62 ‡

0.61 ‡

0.98 ‡

Sex (M/F)

18/32

16/35

19/34

0.85

0.62 ‡

0.84 ‡

0.63 ‡

Refraction (D)

0.64 (0.34)

−3.62 (0.43)

−5.24 (1.10)

< .001*

< .001 ‡

< .001 ‡

< .001 ‡

Axial lenght (mm)

22.82 (0.80)

24.41 (0.61)

26.23 (1.30)

< .001*

< .001 ‡

< .001 ‡

< .001 ‡

MD (dB)

−2.16 (4.43)

−2.18 (5.37)

−3.50 (5.30)

0.24*

0.96 ‡

0.14 ‡

0.16 ‡

PSD (dB)

2.77 (2.23)

3.39 (3.42)

3.76 (3.67)

0.27*

0.30 ‡

0.09 ‡

0.55 ‡

RNFLavg (μ)

96.43 (14.06)

95.23 (16.66)

86.02 (13.58)

0.002*

0.58 ‡

0.0005 ‡

0.008 ‡

GCCavg (μ)

87.63 (7.70)

85.12 (14.50)

81.59 (11.87)

0.04*

0.22 ‡

0.003 ‡

0.23 ‡

Estimated total RGC count (n)

941,639.43 (259,924.16)

918,347.12 (279,783.75)

786,566.29 (260,723.37)

0.007*

0.57 ‡

0.002 ‡

0.02 ‡

  1. The parameters are expressed as mean and SD; MD Mean deviation of SAP, PSD Pattern standard deviation of SAP. RNFL Retinal Nerve Fiber Layer, GCC Ganglion Cell Complex, RGC Retinal Ganglion Cell
  2. *P-values for ANOVA, significant for p < 0.05
  3. † P-values for χ2 test, significant for p < 0.05
  4. P-value for t test between groups, significant for p < α adjusted with Bonferroni correction (p-value with IC 95% / number of comparisons = 0.05/3 = 0.0167)