M, H., A. S, and O. W, "Limbal Relaxing incisions versus Penetrating Limbal Relaxing Incisions for the management of Astigmatism in Cataract Surgery", Advances in Ophthalmology and Visual System, vol. 2, issue 5, pp. 62, 2015.
M, H., A. M, A. S, and A. M, "Incidence of Posterior Vitreous Detachment in Myopes Undergoing Femtosecond Laser Assisted In Situ Keratomileusis using a 200 kHz Femtosecond laser system", Journal of Clinical and Experimental Ophthalmology, vol. 9, issue 9, pp. 741, 2018.
Hosny, M., E. Mayah, M. Anis, and D. Pinero, "Comparison Between Q-Adjusted LASIK and Small-Incision Lenticule Extraction for Correction of Myopia and Myopic Astigmatism.", Eye and Contact Lens, vol. 44, issue 2, pp. 426-432, 2018.
Hosny, M. H., A. Marrie, M. Karim Sidky, S. GamalEldin, and M. Salem, "Results of Femtosecond Laser-Assisted Descemet Stripping Automated Endothelial Keratoplasty.", Journal of ophthalmology, vol. 2017, pp. 8984367, 2017. Abstract

PURPOSE: To evaluate femtosecond laser in DSAEK surgery as an improvement to manual DSAEK.

SETTINGS: Department of Ophthalmology, Cairo University.

DESIGN: A retrospective observational clinical study.

METHODS: 20 eyes with SBK and Fuchs' dystrophy underwent a Femto-assisted DSAEK by laser cutting of two matching posterior stromal discs in the recipient and donor corneas and then fitting the donor disc in the posterior corneal defect of the recipient using Busin's glide or Terry forceps.

RESULTS: Corneal thickness decreased significantly from a mean of 900-micron preoperative values (900.7 m) to 562 m postoperatively. Evidence of side healing was documented by OCT. One patient had a double AC, one patient had an air interface entrapment "Double Bubble," one patient had a fungal infection and was treated by a therapeutic penetrating keratoplasty, and one patient had a CMO.

CONCLUSION: Femtolaser-assisted DSAEK may be superior to manual techniques as it offers better centration, thinner graft/host complex, earlier corneal detergecense, and stronger healing. This study was registered at Researchregistry.com with a UID: researchregistry2274.

Hosny, M., F. Aboalazayem, H. El Shiwy, and M. Salem, "Comparison of different intraocular pressure measurement techniques in normal eyes and post small incision lenticule extraction.", Clinical ophthalmology (Auckland, N.Z.), vol. 11, pp. 1309-1314, 2017. Abstract

PURPOSE: The purpose of the study was to determine the accuracy of intraocular pressure (IOP) measurement after small incision lenticule extraction (SMILE) using Goldmann applanation tonometry (GAT) and ocular response analyzer (ORA).

METHODS: This is a prospective clinical study that was conducted on 30 eyes in the interval between February 2016 and September 2016. The age of the patients ranged between 19 and 40 years. The patients underwent SMILE surgery using the femto laser. IOP was measured preoperatively and 1 month postoperatively by both techniques, the GAT and the ORA.

RESULTS: GAT recorded lower values than ORA values (IOPcc) preoperatively and postoperatively and the difference was statistically significant. Both GAT and ORA IOP measurements decreased after SMILE. There was no statistically significant correlation between the changes in the GAT and ORA readings and the postoperative corneal pachymetry or the lenticule thickness. Both corneal hysteresis and corneal resistance factor showed significant decline after the procedure, which correlated with the lenticule thickness.

CONCLUSION: SMILE causes significant reduction in IOP measurement by ORA and GAT. Corneal biomechanics decreases following SMILE and this correlates with lenticule thickness.

Goussous, I. A., M. - S. El-Agha, A. Awadein, M. H. Hosny, A. A. Ghaith, and A. L. Khattab, "The effect of flap thickness on corneal biomechanics after myopic laser in situ keratomileusis using the M-2 microkeratome.", Clinical ophthalmology (Auckland, N.Z.), vol. 11, pp. 2065-2071, 2017. Abstract

Purpose: The purpose of this study was to determine the effect of flap thickness on corneal biomechanics after myopic laser in situ keratomileusis (LASIK).

Methods: This is a prospective controlled non-randomized, institutional study. Patients underwent either epi-LASIK with mitomycin (advanced surface ablation [ASA]), thin-flap LASIK (90 µm head), or thick-flap LASIK (130 µm head). In ASA, the Moria Epi-K hydroseparator was used. LASIK flaps were created using the Moria M-2 mechanical microkeratome. The corneal hysteresis (CH) and corneal resistance factor (CRF) were measured preoperatively and 3 months after surgery, using the Ocular Response Analyzer®.

Results: Ten patients (19 eyes) underwent ASA, 11 patients (16 eyes) underwent thin-flap LASIK, and 11 patients (16 eyes) underwent thick-flap LASIK. The mean preoperative CH was 10.47±0.88, 10.52±1.4, and 11.28±1.4 mmHg (p=0.043), respectively, decreasing after surgery by 1.75±1.02, 1.66±1.00, and 2.62±1.03 mmHg (p=0.017). The mean reduction of CH per micron of central corneal ablation was 0.031, 0.023, and 0.049 mmHg/µm (p=0.005). Mean preoperative CRF was 10.11±1.28, 10.34±1.87, and 10.62±1.76 mmHg (p=0.66), decreasing after surgery by 2.33±1.35, 2.77±1.03, and 2.92±1.10 mmHg (p=0.308). The mean reduction of CRF per micron of central corneal ablation was 0.039, 0.040, and 0.051 mmHg/µm (p=0.112).

Conclusion: Thick-flap LASIK caused a greater reduction of CH and CRF than thin-flap LASIK and ASA, although this was statistically significant only for CH. ASA and thin-flap LASIK were found to be biomechanically similar.

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