Table 1 Reviewed articles of FSAK performed in post-keratoplasty eyes
From: Femtosecond laser-assisted astigmatic keratotomy: a review
Reference | Type of FSAK | Open wound | Optical zone diameter | Incisional depth | Eyes (no.) | Eye type | Follow-up | Mean keratometric astigmatism (preoperative) (D) | Mean keratometric astigmatism (postoperative) (D) | % Reduction |
|---|---|---|---|---|---|---|---|---|---|---|
St. Clair et al. (2016) [13] | Penetrating | Not reported | mean 6.66 mm (5.5–7.8 mm) | 86% (range, 62%–94%) | 89 | Post-PKP/DALK | 12 months | 8.26 ± 2.90 | 3.62 ± 2.59 | 56.20% |
Loriaut et al. (2015) [4] | Penetrating | ✓ | 6–6.5 mm | 75% of thinnest pachymetry | 20 | Post-PKP | 17 ± 7.9 months | 9.45 ± 2.97 | 4.64 ± 2.79 | 50.90% |
Buzzonetti et al. (2009) [21] | Penetrating | ✓ | mean 5.9 mm (4.8–6.8 mm) | 80% of corneal thickness (mean, 475 ± 59 μm) | 9 | Post-PKP | 3 months | 9.80 ± 1.90 | 5.20 ± 1.50 | 46.90% |
Cleary et al. (2013) [11] | Penetrating | ✓ | 7.8–8 mm | 65%–75% | 6 | Post-PKP | 4.5 months | 9.8 ± 2.9 | 4.5 ± 3.2 | 54.10% |
Trivizki et al. (2015) [68] | Penetrating | ✓ | 5.79 ± 0.32 mm (5.5–6 mm) | 80% of the minimal graft thickness | 27 | - | 1 year | 8.43 ± 2.8 (refractive) | 3.31 ± 1.39 (refractive) | 60.70% |
Hoffart et al. (2009) [18] | Penetrating | ✓ | 6.5 mm | 75% | 10 | - | 6 months | 7.01 ± 3.02 | 3.97 ± 2.38 | 43.37% |
Kymionis et al. (2009) [20] | Penetrating | ✓ | 6.5 mm | 75% | 1 | - | 6 months | 4.4 | 0.67 | 84.77% |
Hashemian et al. (2017) [7] | Penetrating | ✓ | grafts diameter 7.25–8.25 mm incision 1 mm inside graft-host interface | 85% of local corneal thickness | 23 | Post-PKP/DALK | 6 months | 7.75 ± 2.75 | 3.69 ± 3.54 | 52.40% |
Al Sabaani et al. (2016) [8] | Penetrating | ✓ | 0.5–0.7 mm inside graft–host junction | 75–85% | 52 | Post-PKP | 13.77 ± 4.17 months | 6.73 ± 2.49 | 4.35 ± 3.83 | 35.40% |
Nubile et al. (2009) [10] | Penetrating | ✓ | 1 mm from graft edge | 90% | 12 | Post-PKP | 6 months | 7.16 ± 3.07 (refractive) | 2.23 ± 1.55 (refractive) | 68.85% |
Fadlallah et al. (2015) [9] | Penetrating | ✗ | 5.8–7.5 mm (0.5 mm inside graft–host junction) | 90% of corneal thickness (390–590 μm) | 62 | - | 2 years | 7.1 ± 1.72 | 3.5 ± 3.1 | 50.70% |
Kumar et al. (2010) [6] | Penetrating | ✗ | 1 mm less than graft diameter (0.5 mm within graft–host junction) | 90% | 37 | Post-PKP | 7.2 months | 7.46 ± 2.7 | 4.77 ± 3.29 | 36.10% |
Venter et al. (2013) [5] | Intrastromal | ✗ | 7 mm | 60 μm from the epithelium to 80% depth | 47 | Post-LASIK | 7.6 ± 2.9 months | 1.15 ± 0.43 | 0.49 ± 0.37 | 57.40% |
Viswanathan and Kumar (2013) [12] | Intrastromal | ✗ | 0.5 mm within the graft–host | 60 μm below the epithelium 90% of stroma | 2 | Post-PKP | 4 months | 11.9 (OD) | 4.1 (OD) | 65.50% |
10.4 (OS) | 1.12 (OS) | 89.42% | ||||||||
Shalash et al. (2015) [36] | Intrastromal | ✗ | 7.0 mm optical zone (0.5–1.0 mm inside graft–host interface) | 95% of corneal thickness | 20 | Post-PKP | 1 step | 5.39 ± 0.98 | 2.46 ± 1.07 | 54.40% |
1 month | 0.85 ± 0.87 | 84.20% | ||||||||
1 year | 1.05 ± 0.71 | 80.50% | ||||||||
Wetterstrand et al. (2015) [14] | Intrastromal | ✗ | 6–7 mm | 90 μm below epithelium and 10% intact posterior cornea | 10 | - | 3 months | 8.8 (5.1 to 16.0) | 5.1 (1.1 to 8.5) | 42.05% |
90 μm below epithelium and 125 μm intact posterior cornea | 10 | - | 8.5 (3.9 to 10.5) | 6.5 (4.4 to 9.9) | 23.53% | |||||
Wetterstrand et al. (2013) [15] | Intrastromal | ✗ | 6–7 mm | 90 μm below the epithelium and 90% of stroma | 16 | Post-PKP | 3 months | 9.49 ± 4.78 | 4.41 ± 2.14 | 53.50% |