Review Article
Corneal Biomechanical Properties in Different Ocular Conditions and New Measurement Techniques
Table 2
Summary of studies evaluating the influence of refractive surgery on biomechanical parameters.
| Author | Sample (eyes) | Outcomes | CH (mmHg) | CRF (mmHg) |
|
Pepose et al. (2007) [25] | 66 LASIK | Pre | Post | Pre | Post | 9.7 ± 1.8 | 8.0 ± 1.6 | 9.5 ± 1.9 | 6.7 ± 1.7 |
|
Ortiz et al. (2007) [4] | 65 LASIK | Pre | Post | Pre | Post | 10.44 ± 1.74 | 9.3 ± 1.9 | 10.07 ± 1.97 | 8.1 ± 1.8 |
|
Hamilton et al. (2008) [81] | 32 LASIK (flap with femtosecond): | CH decreased 1.9 mmHg | | | 33 LASIK (flap with microkeratome): | CH decreased 2.2 mmHg | | | 32 PRK: | CH decreased 2.3 mmHg | | |
|
Franco and Lira (2009) [30] | 63 control | 10.8 ± 1.53 | 10.6 ± 1.71 | 20 LASIK | 8.5 ± 1.22 | 7.7 ± 0.97 |
|
Qazi et al. (2009) [82] | | Pre | Post | Pre | Post | 15 LASEK | 9.06 ± 1.56 | 7.16 ± 1.99 | 8.61 ± 1.76 | 5.95 ± 2.41 | 14 LASIK | 10.00 ± 1.77 | 8.57 ± 2.25 | 9.87 ± 1.97 | 7.35 ± 2.49 |
|
Kamiya et al. (2009) [84] | 36 LASIK | Pre: | 10.6 | Pre: | 10.0 | Post: | | Post: | | 1 week: | 8.6 | 1 week: | 7.3 | 1 month: | 9.0 | 1 month: | 7.6 | 3 months: | 9.0 | 3 months: | 7.8 | 6 months: | 8.9 | 6 months: | 7.7 |
|
Kamiya et al. (2009) [83] | | Pre | Post | Pre | Post | 27 LASIK | 10.8 | 8.6 | 10.3 | 7.7 | 31 PRK | 10.8 | 9.2 | 10.3 | 8.4 |
|
Shah and Laiquzzaman (2009) [85] | 110 LASIK | Pre: | Post: | Pre | Post | 11.4 | 9.2 | 10.0 | 7.6 |
|
Chen et al. (2010) [86] | 60 LASIK | Pre: | 10.59 ± 1.02 | Pre: | 8.80 ± 1.45 | Post: | | Post: | | 1 day: | 8.16 ± 0.84 | 1 day: | 5.02 ± 1.16 | 10 days: | 8.14 ± 0.77 | 10 days: | 4.96 ± 0.98 | 1 month: | 8.33 ± 0.88 | 1 month: | 5.08 ± 1.31 | 3 months: | 8.47 ± 0.78 | 3 months: | 5.26 ± 0.96 |
|
Ryan et al. (2011) [87] | 102 epi-LASIK | Pre: | 10.22 | Pre: | 10.01 ± 1.80 | Post: | | Post: | | 1 month: | 8.17 ± 1.25 | 1 month | 7.82 ± 1.68 | 3 months: | 8.46 ± 1.44 | 3 months: | 8.03 ± 1.85 | 6 months: | 8.63 ± 1.31 | 3 months: | 7.77 ± 1.50 | 12 months: | 8.53 ± 1.49 | 3 months: | 7.80 ± 1.66 |
|
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CH: corneal hysteresis; CRF: corneal resistance factor.
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