Corneal Clarity and Visual Outcomes after Small-Incision Lenticule Extraction and Comparison to Femtosecond Laser-Assisted In Situ Keratomileusis

Joint Authors

Droutsas, Konstantinos
Sekundo, W.
Schulze, S.
Lazaridis, Apostolos
Petrak, Michael

Source

Journal of Ophthalmology

Issue

Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2017-03-15

Country of Publication

Egypt

No. of Pages

9

Main Subjects

Medicine

Abstract EN

Purpose.

To evaluate corneal clarity and visual outcomes after small-incision lenticule extraction (SMILE) and compare them to femtosecond laser-assisted in situ keratomileusis (FS-LASIK).

Materials and Methods.

Fifty-eight myopic eyes of 33 patients who underwent SMILE were compared to 58 eyes of 33 patients treated with FS-LASIK.

All procedures were performed using VisuMax® femtosecond laser and MEL 80® excimer laser (Carl Zeiss Meditec AG, Germany).

Pentacam™ (Oculus, Germany) was used for pre- and 3-month postoperative corneal densitometry (CD) analysis.

CD was evaluated at 3 optically relevant, concentric radial zones (0–2 mm, 2–6 mm, and 0–6 mm annulus) around the corneal apex and at 3 different anatomical corneal layers (anterior, central, and posterior).

Associations of postoperative CD values with the lenticule thickness and ablation depth were examined.

Preoperative and postoperative corrected distance visual acuity (CDVA) values were also compared.

Results.

After SMILE, the total CD (all corneal layers) at 0–6 mm annulus showed no significant change compared to preoperative values (P=0.259).

After FS-LASIK, the total CD was significantly reduced (P=0.033).

Three-month postoperative CD showed no significant differences between the 2 groups for all examined annuli (0–2 mm: P=0.569; 2–6 mm: P=0.055; and 0–6 mm: P=0.686).

Total CD after SMILE at 0–6 mm annulus displayed a weak negative association with the lenticule thickness (P=0.079, R2=0.0532) and after FS-LASIK displayed a weak negative association with the ablation depth (P=0.731, R2=0.0015).

Postoperative CDVA was similar for both groups (P=0.517).

Conclusion.

Quantification of corneal clarity using the Scheimpflug CD showed similar results before and 3 months after SMILE.

Compared to FS-LASIK, no significant differences of corneal clarity and CDVA were found 3 months postoperatively.

American Psychological Association (APA)

Lazaridis, Apostolos& Droutsas, Konstantinos& Sekundo, W.& Petrak, Michael& Schulze, S.. 2017. Corneal Clarity and Visual Outcomes after Small-Incision Lenticule Extraction and Comparison to Femtosecond Laser-Assisted In Situ Keratomileusis. Journal of Ophthalmology،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1185056

Modern Language Association (MLA)

Lazaridis, Apostolos…[et al.]. Corneal Clarity and Visual Outcomes after Small-Incision Lenticule Extraction and Comparison to Femtosecond Laser-Assisted In Situ Keratomileusis. Journal of Ophthalmology No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1185056

American Medical Association (AMA)

Lazaridis, Apostolos& Droutsas, Konstantinos& Sekundo, W.& Petrak, Michael& Schulze, S.. Corneal Clarity and Visual Outcomes after Small-Incision Lenticule Extraction and Comparison to Femtosecond Laser-Assisted In Situ Keratomileusis. Journal of Ophthalmology. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1185056

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1185056