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Corneal refractive therapy

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https://www.readbyqxmd.com/read/29760570/plasma-rich-in-growth-factors-eye-drops-to-treat-secondary-ocular-surface-disorders-in-patients-with-glaucoma
#1
Ronald M Sánchez-Avila, Jesus Merayo-Lloves, Maria Laura Fernández, Luis Alberto Rodríguez-Gutiérrez, Pedro Pablo Rodríguez-Calvo, Andres Fernández-Vega Cueto, Francisco Muruzabal, Gorka Orive, Eduardo Anitua
Purpose: To evaluate the efficacy and safety of plasma rich in growth factors (PRGF) eye drops in patients with glaucoma with secondary ocular surface disorders (OSDs) due to surgeries and topical hypotensive drugs use. Materials and methods: A retrospective case-series study design was used including six patients (eight eyes) diagnosed with glaucoma who received surgical (nonpenetrating deep sclerectomy and/or trabeculectomy) and medical treatments (hypotensive eye drops) to control intraocular pressure (IOP) and who developed secondary OSDs, unresponsive to conventional treatments...
2018: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/29753851/macular-structures-optical-components-and-visual-acuity-in-preschool-children-after-intravitreal-bevacizumab-or-laser-treatment
#2
Yung-Sung Lee, Lai-Chu See, Shu-Hao Chang, Nan-Kai Wang, Yih-Shiou Hwang, Chi-Chun Lai, Kuan-Jen Chen, Wei-Chi Wu
PURPOSE: To investigate the macular structures, optical components, and visual acuity in preschool-aged children with a history of type I retinopathy of prematurity who underwent either intravitreal bevacizumab (IVB), laser, or a combination of treatments. DESIGN: Comparative interventional case series. METHODS SETTING: A referred medical center in Taiwan. STUDY POPULATION: 80 eyes from 42 patients (33 IVB-treated eyes from 17 children, 24 laser-treated eyes from 13 children, and 23 laser + IVB-treated eyes from 12 children)...
May 10, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29738594/bilateral-asymmetric-keratoconus-induced-by-thyrotoxicosis-with-long-term-stability-after-corneal-cross-linking
#3
Ramon Lee, Ahmed El-Massry, Youssef El-Massry, J Bradley Randleman
PURPOSE: To present a case of bilateral, asymmetric keratoconus presenting unilaterally after partial thyroidectomy with delayed presentation in the second eye after thyrotoxicosis, with disease stabilization following corneal cross-linking (CXL). METHODS: Case report and literature review. RESULTS: A 17-year-old girl with a history of Graves' disease underwent partial thyroidectomy without thyroid hormone replacement therapy with normal baseline ophthalmic examination of corrected distance visual acuity (CDVA) of 20/20 and no manifest astigmatism in either eye...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29738593/bilateral-keratoconus-induced-by-secondary-hypothyroidism-after-radioactive-iodine-therapy
#4
Ramon Lee, Farhad Hafezi, J Bradley Randleman
PURPOSE: To present a case of new-onset, bilateral, rapidly progressive keratoconus induced by secondary hypothyroidism after radioactive iodine therapy during the sixth decade of life that was successfully treated with corneal cross-linking. METHODS: Case report and literature review. RESULTS: A 53-year-old woman with no ocular complaints but with a history of Graves' disease and thyrotoxicosis was treated with radioactive iodine therapy and oral levothyroxine for secondary acquired hypothyroidism 3 years prior...
May 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29721842/pigment-dispersion-syndrome-and-pigmentary-glaucoma-a-review-and-update
#5
Gianluca Scuderi, Maria Teresa Contestabile, Luca Scuderi, Aloisa Librando, Vito Fenicia, Siavash Rahimi
INTRODUCTION: Potential factors influencing stereopsis were investigated in patients with both refractive accommodative esotropia (RAE) and amblyopia. Pigment dispersion syndrome (PDS) is a condition where anomalous iridozonular contact leads to pigment dispersion throughout the anterior segment and the released pigment is abnormally deposited on various ocular structures. CLINICAL PRESENTATION: The clinical presentation of PDS is defined by the presence of pigmented cells on the corneal endothelium, an increase of pigmentation of the trabecular meshwork, and mid-periphery transillumination defects of the iris...
May 2, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29497624/scleral-surgery-for-the-treatment-of-presbyopia-where-are-we-today
#6
REVIEW
AnnMarie Hipsley, Brad Hall, Karolinne M Rocha
Presbyopia corrections traditionally have been approached with attempts to exchange power, either at the cornea or the lens planes, inducing multifocality, or altering asphericity to impact the optical system. Treatments that affect the visual axis, such as spectacle and contact lens correction, refractive surgeries, corneal onlays and inlays, and intraocular lenses are typically unable to restore true accommodation to the presbyopic eye. Their aim is instead to enhance 'pseudoaccommodation' by facilitating an extended depth-of-focus for which vision is sufficient...
2018: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/29407158/hydrazone-crosslinked-hyaluronan-based-hydrogels-for-therapeutic-delivery-of-adipose-stem-cells-to-treat-corneal-defects
#7
Laura Koivusalo, Jennika Karvinen, Eetu Sorsa, Ilari Jönkkäri, Jari Väliaho, Pasi Kallio, Tanja Ilmarinen, Susanna Miettinen, Heli Skottman, Minna Kellomäki
Corneal blindness is a worldwide problem, plagued by insufficient amount of high-quality donor tissue. Cell therapy using human adipose stem cells (hASCs) has risen as an alternative to regenerate damaged corneal stromal tissue, the main structural and refractive layer of the cornea. Herein we propose a method to deliver hASCs into corneal defects in hyaluronan (HA)-based hydrogels, which form rapidly in situ by hydrazone crosslinking. We fabricated two different HA-based hydrazone-crosslinked hydrogels (HALD1-HACDH and HALD2-HAADH), and characterized their swelling, degradation, mechanical, rheological and optical properties and their ability to support hASC survival...
April 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28820793/codeine-plus-acetaminophen-for-pain-after-photorefractive-keratectomy-a-randomized-double-blind-placebo-controlled-add-on-trial
#8
RANDOMIZED CONTROLLED TRIAL
Vinicius B P Pereira, Renato Garcia, Andre A M Torricelli, Adriana Mukai, Samir J Bechara
BACKGROUND: Pain after photorefractive keratectomy (PRK) is significant, and the analgesic efficacy and safety of oral opioids in combination with acetaminophen has not been fully investigated in PRK trials. PURPOSE: To assess the efficacy and safety of the combination of codeine plus acetaminophen (paracetamol) versus placebo as an add-on therapy for pain control after PRK. STUDY DESIGN: Randomized, double-blind, placebo-controlled trial...
October 2017: Cornea
https://www.readbyqxmd.com/read/28683485/-therapeutic-options-in-keratoconus
#9
Frederik Raiskup, Janine Lenk, Robert Herber, Zisis Gatzioufas, Eberhard Spörl
A recent epidemiology study revealed that prevalence of keratoconus was much higher than previously assumed. Therefore, it is no longer deemed an "orphan disease", as it has a relevant socioeconomic impact on the healthcare system. One of the most important risk factors for developing keratoconus is chronic eye rubbing which, apart from other known risk factors such as atopy or Down's syndrome, is the only modifiable factor. Informing the patient and offering behavior modifying therapies seems to be essential...
July 6, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28676989/in-vivo-and-ex-vivo-evaluation-of-cell-cell-interactions-adhesion-and-migration-in-ocular-surface-of-patients-undergone-excimer-laser-refractive-surgery-after-topical-therapy-with-different-lubricant-eyedrops
#10
Roberta Calienno, Claudia Curcio, Manuela Lanzini, Mario Nubile, Leonardo Mastropasqua
PURPOSE: To investigate, in vivo by means of in vivo confocal microscopy (IVCM) and ex vivo by impression cytology, epithelial cellular damage after excimer laser refractive surgery in patients under different topical lubricant therapies. METHODS: Two hundred eyes of 100 patients, undergone bilateral excimer laser refractive surgery for medium myopic error correction [spherical equivalent refraction from -1.75 to -3.50 dioptres (D) with refractive astigmatism under -0...
July 4, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28576215/effect-of-dry-eye-on-scheimpflug-imaging-of-the-cornea-and-elevation-data
#11
Leyla Asena, Dilek D Altınörs, Şefik Cezairlioğlu, Sefer Ogün Bölük
OBJECTIVE: To evaluate the effect of dry eye on Scheimpflug imaging of the cornea and elevation data. DESIGN: Prospective observational study. PARTICIPANTS: Scheimpflug images of 50 patients with dry eye who were being tested for eligibility for corneal refractive surgery were screened. Twelve eyes of 12 patients with abnormal Belin/Ambrosio enhanced ectasia display (BAD) anterior elevation difference were included in the study. The patients had no history of contact lens wear or any other sign of ectasia...
June 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28559836/unilateral-posterior-polymorphous-corneal-dystrophy-presented-as-anisometropic-astigmatism-3-case-reports
#12
Hyun Sun Jeon, Joon Young Hyon
BACKGROUND: Posterior polymorphous corneal dystrophy (PPCD) is typically considered bilateral and asymptomatic. However, few case reports on patients with unilateral PPCD with asymmetric refractive error have mentioned anisometropic amblyopia development. In support of this, we report 3 cases of unilateral PPCD that presented as anisometropic astigmatism. Visual prognosis related to amblyopia development is discussed. CASE PRESENTATION: All 3 patients had a band lesion in the affected eye and a difference of at least 1...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28546941/role-of-corneal-collagen-fibrils-in-corneal-disorders-and-related-pathological-conditions
#13
REVIEW
Hong-Yan Zhou, Yan Cao, Jie Wu, Wen-Song Zhang
The cornea is a soft tissue located at the front of the eye with the principal function of transmitting and refracting light rays to precisely sense visual information. Corneal shape, refraction, and stromal stiffness are to a large part determined by corneal fibrils, the arrangements of which define the corneal cells and their functional behaviour. However, the modality and alignment of native corneal collagen lamellae are altered in various corneal pathological states such as infection, injury, keratoconus, corneal scar formation, and keratoprosthesis...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28486314/cellular-therapy-with-human-autologous-adipose-derived-adult-stem-cells-for-advanced-keratoconus
#14
Jorge L Alió Del Barrio, Mona El Zarif, María P de Miguel, Albert Azaar, Norman Makdissy, Walid Harb, Ibrahim El Achkar, Francisco Arnalich-Montiel, Jorge L Alió
PURPOSE: The aim of this phase 1 study was to preliminarily evaluate the safety and efficacy of autologous adipose-derived adult stem cell (ADASC) implantation within the corneal stroma of patients with advanced keratoconus. METHODS: Five consecutive patients were selected. Autologous ADASCs were obtained by elective liposuction. ADASCs (3 × 10) contained in 1 mL saline were injected into the corneal stroma through a femtosecond-assisted 9.5-mm diameter lamellar pocket under topical anesthesia...
August 2017: Cornea
https://www.readbyqxmd.com/read/28456063/ocular-findings-in-adult-subjects-with-an-inactivating-mutation-in-gh-releasing-hormone-receptor-gene
#15
Augusto C N Faro, Virginia M Pereira-Gurgel, Roberto Salvatori, Viviane C Campos, Gustavo B Melo, Francielle T Oliveira, Alecia A Oliveira-Santos, Carla R P Oliveira, Francisco A Pereira, Ann Hellström, Luís A Oliveira-Neto, Eugenia H O Valença, Manuel H Aguiar-Oliveira
OBJECTIVE: Ocular function is fundamental for environmental adaptation and survival capacity. Growth factors are necessary for a mature eyeball, needed for adequate vision. However, the consequences of the deficiency of circulating growth hormone (GH) and its effector insulin-like growth factor I (IGF-I) on the physical aspects of the human eye are still debated. A model of untreated isolated GH deficiency (IGHD), with low but measurable serum GH, may clarify this issue. The aim of this study was to assess the ocular aspects of adult IGHD individuals who have never received GH therapy...
June 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28445315/the-effect-of-timolol-0-5-on-the-correction-of-myopic-regression-after-lasik
#16
RANDOMIZED CONTROLLED TRIAL
Hong Qi, Caifeng Gao, Yaxin Li, Xue Feng, Miao Wang, Yu Zhang, Yueguo Chen
BACKGROUD: Postlaser in situ keratomileusis (post-LASIK) refractive regression is defined as the gradual, partial, or total loss of initial correction that limits the predictability, efficiency, and long-term stability of LASIK. Our study assesses the effect of Timolol 0.5% on the correction of myopic regression after LASIK. METHODS: This prospective, randomized, controlled study included 62 eyes of 62 patients with myopic regression of -1.18 ± 0.86 diopters (D) after myopic LASIK...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28404521/diabetic-complications-in-the-cornea
#17
Alexander V Ljubimov
Diabetic corneal alterations, such as delayed epithelial wound healing, edema, recurrent erosions, neuropathy/loss of sensitivity, and tear film changes are frequent but underdiagnosed complications of both type 1 (insulin-dependent) and type 2 (non-insulin-dependent) diabetes mellitus. The disease affects corneal epithelium, corneal nerves, tear film, and to a lesser extent, endothelium, and also conjunctiva. These abnormalities may appear or become exacerbated following trauma, as well as various surgeries including retinal, cataract or refractive...
October 2017: Vision Research
https://www.readbyqxmd.com/read/28264130/a-new-matrix-therapy-agent-for-faster-corneal-healing-and-less-ocular-discomfort-following-epi-off-accelerated-corneal-cross-linking-in-progressive-keratoconus
#18
Koray Gumus, Marta Gomes Guerra, Sara Homem de Melo Marques, Sarper Karaküçük, Denis Barritault
PURPOSE: To investigate the hypothesis that a new matrix therapy agent (ReGeneraTing Agent, [RGTA]) would speed up the corneal reepithelialization, improve stromal healing, and reduce ocular symptoms after epi-off corneal cross-linking (CXL). METHODS: Sixty eyes of 60 patients with progressive keratoconus were enrolled in the study. Epi-off accelerated CXL was performed in all patients. Sixty eyes were randomized into two groups according to use of RGTA eye drops prior to contact lens fitting at the end...
March 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28068444/effectiveness-of-an-eyelid-thermal-pulsation-procedure-to-treat-recalcitrant-dry-eye-symptoms-after-laser-vision-correction
#19
Craig S Schallhorn, Julie M Schallhorn, Stephen Hannan, Steven C Schallhorn
PURPOSE: To provide an initial retrospective evaluation of the effectiveness of a thermal pulsation system to treat intractable patient-reported dye eye symptoms following laser vision correction. METHODS: A total of 109 eyes of 57 patients underwent thermal pulsation therapy (LipiFlow; TearScience, Morrisville, NC) for the treatment of dry eye symptoms following laser vision correction. A standardized dry eye questionnaire, the Standard Patient Evaluation of Eye Dryness (SPEED II), was administered to all patients before and after thermal pulsation therapy...
January 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28009792/clinical-features-in-children-with-posterior-polymorphous-corneal-dystrophy
#20
Ye Jin Ahn, Soon Il Choi, Hae Ri Yum, Sun Young Shin, Shin Hae Park
PURPOSE: To describe clinical features in children diagnosed with posterior polymorphous corneal dystrophy (PPCD) in their first or second decade of life. METHODS: A retrospective study was performed with the medical records of seven unrelated Korean pediatric patients who were diagnosed with PPCD and were followed up for a minimum of 3 years. Thorough ocular examinations were performed, including best-corrected visual acuity, intraocular pressure, refractive and keratometric measurements, slit-lamp biomicroscopy, and specular microscopy at all visits...
April 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
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