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corneal haze

Sangyoon Hyun, Seongjun Lee, Jae-Hyung Kim
PURPOSE: To compare the visual and refractive outcomes of small-incision lenticule extraction (SMILE), laser-assisted subepithelial keratomileusis (LASEK), and LASEK combined with corneal collagen cross-linking (LASEK-CXL) surgery for high-degree myopia. METHODS: Medical records of patients with spherical equivalent (SE) greater than -6.00 diopters (D) treated with SMILE, LASEK, and LASEK-CXL were reviewed. Uncorrected distance visual acuity (UCVA), SE, and corneal haze were followed up in the 3 groups for 6 months...
November 23, 2016: Cornea
Michael B Raizman, Pedram Hamrah, Edward J Holland, Terry Kim, Francis S Mah, Christopher J Rapuano, Roger G Ulrich
Drugs across many pharmacologic classes induce corneal epithelial changes. Many of these drugs have cationic amphiphilic structures, with a hydrophobic ring and hydrophilic cationic amine side chain that allow them to cross cell membranes. These drugs lead to intracellular phospholipid accumulation, often manifested in the cornea by vortex keratopathy, with no effect on visual acuity and few ocular symptoms. Other drugs, notably antineoplastic agents, produce a fine diffuse corneal haze, sometimes accompanied by decreased vision that can be dose limiting...
November 24, 2016: Survey of Ophthalmology
Shanu Markand, Natecia L Baskin, Ranjay Chakraborty, Erica Landis, Sara A Wetzstein, Kevin J Donaldson, Priyanka Priyadarshani, Shannon E Alderson, Curran S Sidhu, Jeffrey H Boatright, P Michael Iuvone, Machelle T Pardue, John M Nickerson
PURPOSE: Interphotoreceptor retinoid-binding protein (IRBP) is abundant in the subretinal space and binds retinoids and lipophilic molecules. The expression of IRBP begins precociously early in mouse eye development. IRBP-deficient (KO) mice show less cell death in the inner retinal layers of the retina before eyelid opening compared to wild-type C57BL/6J (WT) controls and eventually develop profound myopia. Thus, IRBP may play a role in eye development before visually-driven phenomena...
2016: Molecular Vision
Marie Boulze-Pankert, Romuald Dariel, Louis Hoffart
PURPOSE: To evaluate the modification of corneal optical densitometry following photorefractive keratectomy (PRK) using Scheimpflug topography. METHODS: Corneal densitometry (0 to 100 grayscale units [GSU]), pachymetry, and keratometry were evaluated using a rotating Scheimpflug camera (Pentacam HR; Oculus Optikgeräte, GmbH, Wetzlar, Germany) at baseline and 1 and 3 months following PRK in myopic patients. Subjective refraction, uncorrected distance visual acuity, corrected distance visual acuity, and corneal haze (0 to 4 on common subjective scale) were evaluated preoperatively at baseline, 1 month, and 3 months...
November 1, 2016: Journal of Refractive Surgery
Pouriska B Kivanany, Kyle C Grose, W Matthew Petroll
Extracellular matrix (ECM) supplies both physical and chemical signals to keratocytes which can impact their differentiation to fibroblasts and/or myofibroblasts. It also provides a substrate through which they migrate during wound repair. We have previously shown that following transcorneal freeze injury (FI), migrating corneal fibroblasts align parallel to the stromal lamellae during wound repopulation. In this study, we compare cell and ECM patterning both within and on top of the stroma at different time points following lamellar keratectomy (LK) in the rabbit...
October 11, 2016: Experimental Eye Research
Alex L K Ng, Peter S K Kwok, Ricky T K Wu, Vishal Jhanji, Victor C P Woo, Tommy C Y Chan
PURPOSE: To compare the demarcation line depth after 2 different protocols of simultaneous laser in situ keratomileusis and collagen crosslinking (LASIK Xtra). METHODS: Twenty-three patients receiving bilateral LASIK Xtra were included in this comparative interventional study. The corneal stroma was soaked with 0.22% riboflavin for 90 seconds before flap repositioning. One eye was then randomized to receive either 18 mW/cm of ultraviolet A irradiation for 120 seconds or for 180 seconds, whereas the fellow eye received the other irradiation duration...
August 31, 2016: Cornea
Kislay Roy, Bhasker Sriramoju, Rupinder K Kanwar, Jagat R Kanwar
BACKGROUND: Alkali burn is a frequently occurring ocular injury that resembles ocular inflammation caused by eye allergies, infection, and refractive surgeries. METHODS: We investigated the synergistic regenerative potential of dominant negative survivin mutant (SurR9-C84A) and histone deacetylase (HDAC) inhibitor trichostatin-A (TSA) against alkali burn and corneal haze using human keratocytes and rabbit alkali burn model (Female New Zealand white rabbits). RESULTS: Combination of SurR9-C84A and TSA suppressed levels of transforming growth factor (TGF)-β, alpha smooth-muscle actin (α-SMA), fibronectin and HDAC1, leading to apoptosis in myofibroblast cells and, showed the potential to clear the corneal haze...
2016: Frontiers in Pharmacology
Bia Z Kim, Charlotte A Jordan, Charles N J McGhee, Dipika V Patel
PURPOSE: To analyze corneal haze after corneal collagen crosslinking (CXL) for progressive keratoconus using Scheimpflug densitometry. SETTING: Auckland District Health Board, Auckland, New Zealand. DESIGN: Prospective randomized controlled study. METHODS: Both eyes of all patients were examined preoperatively and 1, 3, 6, and 12 months postoperatively. One eye of each patient was treated with corneal CXL, with the contralateral eye serving as the control...
July 2016: Journal of Cataract and Refractive Surgery
Panida Kosrirukvongs, Panotsom Ngowyutagon, Wipawee Booranapong
OBJECTIVE: To show the association between keratoconus and macular dystrophy. MATERIAL AND METHOD: All patients with macular dystrophy and associated clinical findings leading to a diagnosis of keratoconus by corneal topography were retrospectively reviewed during a 10-year period. Uncorrected and best-corrected visual acuity, automated refraction, manifest refraction, corneal thickness, and corneal curvature by corneal topography were evaluated RESULTS: Three patients with macular dystrophy exhibiting decreased vision, multifocal white dense deposits, and haze surrounding the deposits in the corneal stroma were evaluated...
January 2016: Journal of the Medical Association of Thailand, Chotmaihet Thangphaet
Mehrdad Mohammadpour, Hassan Hashemi, Mahmoud Jabbarvand, Kamran Rahmatnejad, Fatemeh Alsadat Sabet
PURPOSE: To evaluate the efficacy of photorefractive keratectomy (PRK) using the advanced personalized treatment (APT) nomogram for correction of moderate to high astigmatism. METHODS: This prospective interventional case series included 60 consecutive eyes of 30 patients undergoing wavefront-guided PRK (Zyoptix 217 Z100 excimer laser, Bausch & Lomb, Munich, Germany) using the APT nomogram and iris registration for myopic astigmatism. Mitomycin-C was applied intraoperatively in all eyes...
April 2016: Journal of Ophthalmic & Vision Research
Sonia Reimondez-Troitiño, Ignacio Alcalde, Noemi Csaba, Almudena Íñigo-Portugués, María de la Fuente, Federico Bech, Ana C Riestra, Jesús Merayo-Lloves, María J Alonso
Corneal injuries are one of the most frequently observed ocular diseases, leading to permanent damage and impaired vision if they are not treated properly. In this sense, adequate wound healing after injury is critical for keeping the integrity and structure of the cornea. The goal of this work was to assess the potential of polymeric nanocapsules, either unloaded or loaded with cyclosporine A or vitamin A, alone or in combination with mitomycin C, for the treatment of corneal injuries induced by photorefractive keratectomy surgery...
July 8, 2016: Drug Delivery and Translational Research
Xintong Li, Lekha Mukkamala, Catherine A Origlieri, Bart K Holland, Robert D Fechtner, Albert S Khouri
PURPOSE: To perform a longitudinal analysis on the association of corneal haze with intraocular pressure (IOP) in eyes with primary congenital glaucoma (PCG) over 3 years. PATIENTS AND METHODS: Charts of all patients diagnosed with glaucoma of childhood from 2002 to 2012 at our institution were retrospectively reviewed. Inclusion criteria were age 18 years and below, plus elevated IOP or characteristic clinical signs. Exclusion criteria were eyes with secondary glaucoma or corneal haze not from PCG and patients with prior ocular surgery or incomplete follow-up...
October 2016: Journal of Glaucoma
Hui Wu, Yuan Hu, Xiao-Ru Shi, Feihong Xu, Chun-Ying Jiang, Rong Huang, Hui Jia
The present report describes the clinical course and treatment of a Mooren-like ulcer associated with abuse of topical anesthetics and dexamethasone. A 38-year-old male physician treated himself with lidocaine, tetracaine and dexamethasone (DEX) eye drops for severe pain and decline of vision in both eyes. After six months of treatment, his right cornea exhibited annular melting with full-thickness stromal infiltration at the limbus and central corneal haze. His left cornea was completely melted and exhibited iris prolapse...
July 2016: Experimental and Therapeutic Medicine
S J Lang, T Reinhard
Keratoconus leads to progressive thinning and protrusion of the cornea. Young patients exhibit the highest risk for progression. Corneal crosslinking was introduced in 1998 and is intended to prevent progression of keratoconus. Only a few prospective controlled trials have been published. Six randomised controlled trials have been published. All these trials confirmed the efficacy of crosslinking through keratometric data. In two trials, progression was reported in some patients of the treatment group. This indicates that not all patients benefit from corneal crosslinking...
June 2016: Klinische Monatsblätter Für Augenheilkunde
J S Weiss
PURPOSE: The first Oskar Fehr lecture is given in honour of Professor Fehr, a well respected ophthalmologist, who was head physician of the Department of Eye Diseases at the Rudolf Virchow Hospital from 1918. He practiced there until 1938, when he was forbidden to enter the clinic because he was Jewish and subject to the anti-Semitic laws that were instituted after the rise of the Nazi party. Dr. Fehr escaped to Great Britain, where he practiced ophthalmology into his eighties. He was the first to distinguish between granular corneal dystrophy, lattice corneal dystrophy and macular corneal dystrophy...
June 2016: Klinische Monatsblätter Für Augenheilkunde
Estera Igras, Rónán O'Caoimh, Paul O'Brien, William Power
PURPOSE: To evaluate the long-term effectiveness and safety of combined LASIK and small-aperture intracorneal inlay implantation (KAMRA; AcuFocus, Irvine, CA) for the surgical compensation of presbyopia and refractive errors. METHODS: Retrospective chart review of all ametropic, presbyopic patients who underwent combined LASIK and KAMRA inlay implantation at a single clinic. Demographic data and preoperative uncorrected and corrected monocular and binocular near and distance visual acuity (UNVA, UDVA, and CDVA) with manifest refractive spherical equivalent (MRSE) were collected and analyzed...
June 1, 2016: Journal of Refractive Surgery
Zisis Gatzioufas, Frederik Raiskup, David O'Brart, Eberhard Spoerl, Georgios D Panos, Farhad Hafezi
PURPOSE: To assess the efficacy of a modified high concentration riboflavin solution containing benzalkonium chloride 0.01% for transepithelial corneal cross-linking (CXL). METHODS: In this prospective, interventional multicenter cohort study, 26 eyes of 26 patients with documented progressive keratoconus who underwent transepithelial CXL were included. Follow-up at 6 and 12 months postoperatively included slit-lamp examination, uncorrected and corrected distance visual acuity (logMAR), maximum keratometry (Kmax), and corneal pachymetry (corneal thinnest point) as determined by Scheimpflug imaging...
June 1, 2016: Journal of Refractive Surgery
Ahmed Javed, Tariq Aslam, Jane Ashworth
The aim of this review is to summate the eye involvement in patients with mucopolysaccharidoses (MPS) using current ocular imaging techniques, their advantages and disadvantages and how they may aid diagnosis, management and monitoring. We critically reviewed the current literature surrounding MPS and recent imaging technology as well as histology. Primary searches of PubMed and Web of Science were performed. We reviewed all papers on the topic published and summarized the findings of each medical device as well as the advantages and disadvantages of using these for the MPS patient...
December 2016: Acta Ophthalmologica
Bryan Chin Hou Ang, Reuben Chao Ming Foo, Edmund Wei Long Lim, Mellisa Mei Hui Tan, Gerard Kwang Ming Nah, Lennard See Yin Thean, Clement Woon Teck Tan, Paul Song Bo Zhao
PURPOSE: To assess the incidence and risk factors for early corneal haze after myopic photorefractive keratectomy (PRK). SETTING: Tertiary eye center, Singapore. DESIGN: Retrospective case series. METHODS: The refractive results and corneal haze severity 3 months after PRK were analyzed. Eyes were categorized into 4 groups based on haze severity. Multivariate ordinal logistic regression analysis adjusting for age, ethnicity, sex, use of intraoperative mitomycin-C (MMC), preoperative sphere, and preoperative cylinder was performed...
May 2016: Journal of Cataract and Refractive Surgery
Maria Xeroudaki, Beatrice Peebo, Johan Germundsson, Per Fagerholm, Neil Lagali
PURPOSE: To evaluate the efficacy of the agent RGTA for epithelial, stromal and nerve regeneration after laser-induced corneal wounding in rabbits. METHODS: After excimer laser wounding of the anterior cornea in 25 New Zealand white rabbits, topical RGTA or placebo was applied in a randomized, masked manner. Fluorescein epithelial staining was performed on the first 5 postoperative days. In vivo confocal microscopy of corneal subbasal nerves and stroma was performed preoperatively and on week 2, 4, 8 and 16...
May 26, 2016: Acta Ophthalmologica
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