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Table 3 Comparison of median absolute error and mean refractive prediction error between the Akreos AO and Softec HD™ groups in the Haigis and SRK/T formulas (n = 80)

From: Comparative evaluation of refractive outcomes after implantation of two types of intraocular lenses with different diopter intervals (0.25 diopter versus 0.50 diopter)

 

Akreos AO

(n = 40)

Softec HD™

(n = 40)

P-value

Haigis formula

 MedAE, Da

0.35 (0.17: 0.75)

0.30 (0.13: 0.43)

0.037c

 MAE, Db

0.49 (0.40)

0.30 (0.20)

0.009d

 RE, D (range)

0.00 (−1.16–1.85)

0.00 (− 0.69–0.81)

 

   ± 0.25 D, n (%)

13 (32.5)

17 (42.5)

   ± 0.50 D, n (%)

23 (57.5)

34 (85.0)

0.027e

   ± 0.75 D, n (%)

130 (75.0)

39 (97.5)

 

   > ±1.00 D, n (%)

4 (10.0)

0 (0.0)

SRK/T formula

 MedAE, Da

0.37 (0.21: 0.78)

0.26 (0.12: 0.48)

0.049c

 MAE, Db

0.50 (0.40)

0.33 (0.26)

0.030d

 RE, D (range)

0.00 (−1.02–1.66)

0.03 (−1.15–1.23)

 

   ±0.25 D, n (%)

13 (32.5)

20 (50.0)

   ±0.50 D, n (%)

26 (65.0)

31 (77.5)

0.323e

   ±0.75 D, n (%)

29 (72.5)

37 (92.5)

 

   > ±1.00 D, n (%)

4 (10.0)

2 (5.0)

  1. MedAE Median absolute error, D Diopters, MAE Mean absolute error, RE Mean refractive prediction error
  2. aValues are presented as median (interquartile range)
  3. bValues are presented as mean (SD)
  4. cMann–Whitney U test
  5. dStudent’s t-test
  6. eChi-square test
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BMC Ophthalmology

ISSN: 1471-2415

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