Purpose: To report complications of femtosecond laser-assisted re-treatment by the creation of side cuts within the old flaps for residual refractive error after primary LASIK in two patients.
Methods: Case report.
Results: Three eyes of two patients had complications with a circumferential sliver of stromal tissue displaced during surgery due to overlap of old and new side cuts. The displaced tissue was repositioned and corneal anatomy was restored. Two of three eyes demonstrated improvement in the uncorrected visual acuity, whereas one eye lost two lines of corrected visual acuity due to loss of tissue at side cut resulting from flap manipulation, which was done at 1 week.
Conclusions: These cases demonstrate a complication of femtosecond laser-enabled side-cut for LASIK enhancement and factors that may lead to this complication and precautions to avoid it.
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http://dx.doi.org/10.3928/1081597X-20130620-03 | DOI Listing |
J Cataract Refract Surg
December 2024
Department of Ophthalmology, Sorocaba Eye Hospital, Sorocaba Eye Bank, Sorocaba, São Paulo, Brazil.
Purpose: To investigate the effectiveness and safety of customized femtosecond laser-assisted corneal allogenic intrastromal ring segments (CAIRS) implantation in keratoconus patients with a history of intrastromal corneal ring segment (ICRS) explantation.
Setting: Sorocaba Eye Hospital (Hospital Oftalmológico de Sorocaba - HOS), Sorocaba, Brazil.
Design: Prospective case series.
Adv Mater
December 2024
Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Anisotropic nanoplatelets (NPLs) possess strong in-plane transition dipole moments and out-of-plane emission, which enable a maximum photon out-coupling efficiency of 40% and a high gain coefficient, making them ideal candidates for light-emitting diodes (LEDs) and lasers. However, the unbalanced surface energy between the side and top facets of NPLs results in poor thermal stability and high susceptibility to ripening at elevated temperatures, which complicates the growth of the shell. To address this issue, a gradient crown (CdSeS) around the CdSe NPLs is designed to stabilize the high energy side facets.
View Article and Find Full Text PDFZhonghua Yan Ke Za Zhi
December 2024
Department of Ophthalmology, Renmin Hospital of Wuhan University, Wuhan430060, China.
Refractive error is a key determinant of visual acuity post-cataract surgery. Traditional methods for addressing refractive errors have been invasive, posing the risk of permanent surgical complications. Thus, the pursuit of non-invasive techniques for correcting refractive errors after cataract surgery is of significant clinical importance.
View Article and Find Full Text PDFPurpose: To evaluate the visual outcomes of keratorefractive lenticule extraction using a new version of a femtosecond laser platform with semi-automated cyclotorsion compensation in comparison to the previous generation without cyclotorsion control.
Methods: This was an ambispective study of consecutive eyes treated by SMILE with the VisuMax and VISUMAX 800 femtosecond lasers at the Uma Eye clinic, Chennai, India between June 2022 and July 2023. Inclusion criteria were myopia up to -10 D and astigmatism between 1.
Front Med (Lausanne)
November 2024
Department of Ophthalmology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China.
Postoperative dry eye is a common complication following femtosecond laser-assisted cataract surgery, and the patient interface (PI) used during the procedure may play a significant role in its occurrence. This study, utilizing a meticulous scientific search strategy, identified seven relevant articles through literature search engines. Most of these studies employed contact-type PI during surgeries, while one researcher used a non-contact PI.
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