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Intraocular pressure changes and corneal biomechanics after hyperopic small-incision lenticule extraction.
- Source :
- BMC Ophthalmology; 4/5/2020, Vol. 20 Issue 1, p1-6, 6p
- Publication Year :
- 2020
-
Abstract
- <bold>Background: </bold>We aimed to compare the intraocular pressure (IOP) measurements by a dynamic Scheimpflug analyzer (Corvis ST), a non-contact tonometer, and an ocular response analyzer after hyperopic small-incision lenticule extraction (SMILE).<bold>Methods: </bold>Thirteen patients who underwent hyperopic SMILE in one eye were enrolled prospectively. IOP and corneal biomechanical parameters were measured preoperatively and at 1 week, 1 month, and 3 months postoperatively with a non-contact tonometer (IOPNCT), Corvis ST (biomechanical corrected IOP [bIOP]), and ocular response analyzer (Goldmann-correlated intraocular pressure [IOPg] and cornea compensated IOP [IOPcc]). A linear mixed model was used to compare the IOPs and biomechanical values among methods at each time point.<bold>Results: </bold>IOPNCT, IOPg, and IOPcc dropped significantly after surgery, with the amplitude being 3.15 ± 0.48 mmHg, 5.49 ± 0.94 mmHg, and 4.34 ± 0.97 mmHg, respectively, at the last follow-up visit. IOPNCT decreased by 0.11 ± 0.06 mmHg per μm of excised central corneal thickness. bIOP did not change significantly after surgery. Preoperatively, no difference was found among the four measurements (P > 0.05). Postoperatively, IOPNCT and bIOP were higher than IOPg and IOPcc. bIOP was independent of cornea thickness at last follow-up visit, whereas it correlated significantly with corneal biomechanics similar to the other three IOP values.<bold>Conclusion: </bold>bIOP is a relative accurate measure of IOP after hyperopic SMILE. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14712415
- Volume :
- 20
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- BMC Ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 142576073
- Full Text :
- https://doi.org/10.1186/s12886-020-01384-2