Comparison of corneal biomechanical changes after LASIK and F-SMILE with CorVis ST.
Eur J Ophthalmol
; 31(4): 1762-1770, 2021 Jul.
Article
em En
| MEDLINE
| ID: mdl-32698618
ABSTRACT
PURPOSE:
To evaluate changes in corneal biomechanics after LASIK and F-SMILE.SETTING:
Elite Eye Center, Tanta, Egypt.DESIGN:
Prospective, randomized, unmasked, interventional comparative case series. PATIENTS ANDMETHODS:
A total of 60 eyes were equally divided into two groups; group A received LASIK and group B received F-SMILE. Pentacam and CorVis ST parameters were compared before and 6 months after procedures. P ⩽ 0.05 was used for significance of results.RESULTS:
bIOP decreased by 0.762 ± 1.211 mmHg in group A (p = 0.092), and by 2.52 ± 1.389 mmHg in group B (p < 0.001) and the difference between groups became significant (p = 0.001). A1 increased significantly in group A only (p = 0.036); while A2 decreased insignificantly in both groups. DAR increased significantly in both groups (p < 0.001, p = 0.022), but the difference between groups remained insignificant (p = 0.461). IR increased significantly in group A only (p < 0.001) and the difference between groups became significant (p = 0.026). ARTH decreased in both groups (p = 0.245, p = 0.695) and the difference remained insignificant (p = 0.928). SP-A1 decreased in group A by 8.89 ± 1.38 mmHg/mm (p = 0.637), and by 32.6 ± 4.39 mmHg/mm in group B (p < 0.001) and the postoperative difference between groups was significant (p = 0.013). CBI increased significantly in group A (p < 0.001), but insignificantly in group B (p = 0.098) and postoperative difference between groups was highly significant (p < 0.001). A significant correlation was found between change in CCT and corresponding changes in DAR, IR, and ARTH after surgery in both groups.CONCLUSION:
The significant differences between groups postoperatively as regards bIOP (p = 0.001), IR (p = 0.026), SP-A1 (p = 0.013), and CBI (p < 0.001) indicate stiffer corneas after F-SMILE and suggest less influence on corneal biomechanics than LASIK.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Ceratomileuse Assistida por Excimer Laser In Situ
/
Miopia
Tipo de estudo:
Clinical_trials
/
Observational_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article