A laser beam propagating in a photorefractive crystal generates a refractive-index profile that deflects the beam to one side. This nonlinear deflection can be balanced by total internal reflection at the crystal surface to produce self-induced photorefractive surface waves. Theoretical and experimental evidence for this effect is given.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.20.002075 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Increased inflammatory mediators in the ocular surface tissue in keratoconus.
Mol Vis
November 2024
Department of Ophthalmology and Visual Science, Federal University of São Paulo, São Paulo, Brazil, UNIFESP.
Article Synopsis
- * Researchers collected and analyzed tear samples from 30 KC patients and 23 controls, measuring levels of various cytokines and gene expression using techniques like flow cytometry and PCR.
- * While higher levels of IL-5 and IL-6 were found in KC patients' conjunctival epithelium, there were no significant differences in cytokine concentrations in tear films between the two groups, though some gene expressions were elevated in the KC group.
Surface ablation laser surgery: Bibliometric and visualized analysis from 2004 to 2023.
Medicine (Baltimore)
November 2024
Department of Ophthalmology, The Third People's Hospital of Dalian, Dalian, China.
Surface ablation laser surgery has resurged in popularity recently because of its safety in correcting myopia and favorable postoperative corneal biomechanical properties. This study aimed to investigate the current focal points and future trends in surface ablation laser surgery over the last 2 decades. The Web of Science Core Collection was used as the primary data source to retrieve literature related to surface ablation laser surgery.
View Article and Find Full Text PDFPostoperative Pain Comparison Between Alcohol-Assisted and Transepithelial Photorefractive Keratectomy Using Nepafenac Treatment: A Novel Study.
Ophthalmol Ther
December 2024
Department of Ophthalmology, Tel Aviv Medical Center and Sackler Faculty of Medicine, Tel Aviv University, 6423906, Tel Aviv, Israel.
Introduction: The study aimed to compare postoperative pain between alcohol-assisted and transepithelial photorefractive keratectomy in patients who received the novel analgesic preoperative nepafenac treatment 2 days preoperatively and 3 days postoperatively. Pain, stinging, tearing, light sensitivity, and stress levels were evaluated.
Methods: The study included a retrospective analysis of 55 patients divided into two groups: bilateral alcohol-assisted photorefractive keratectomy (aa-PRK) and transepithelial photorefractive keratectomy (transepithelial-PRK).
Analysis of corneal remodeling post-myopic photorefractive keratectomy with the WaveLight® EX500 excimer laser.
Sci Rep
September 2024
Groupe de Recherche Clinique #32, Transplantation Et Thérapies Innovantes de La Cornée, Sorbonne Université, Hôpital National des 15-20, Paris, France.
Refractive error is becoming a significant public health issue. Photorefractive Keratectomy (PRK) is a corneal surface surgical technique that removes the corneal epithelium before stromal photoablation by ultraviolet radiation from the Excimer laser. We designed a retrospective study to characterize corneal remodeling after myopic Photorefractive Keratectomy and assess the accuracy of laser-predicted ablation depth (AD).
View Article and Find Full Text PDFTRPV1 corneal neuralgia mutation: Enhanced pH response, bradykinin sensitization, and capsaicin desensitization.
Proc Natl Acad Sci U S A
September 2024
Department of Neurology, Yale School of Medicine, New Haven, CT 06520.
Article Synopsis
- Pain after nerve injuries, particularly post-LASIK and PRK surgeries, is not fully understood, with some patients experiencing severe, persistent pain resembling glass shards in their eyes.
- The study investigated a specific variant of the TRPV1 gene (p.V527M) found in a woman who suffered from corneal pain post-surgery, revealing that this mutation significantly increases sensitivity to acidic conditions.
- The researchers suggest that the heightened response of the p.V527M variant to protons and specific inflammatory compounds may play a crucial role in the development of corneal pain after refractive eye surgeries.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!