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https://www.readbyqxmd.com/read/28924444/implantation-of-a-multifocal-toric-intraocular-lens-after-radial-keratotomy-and-cross-linking-with-hyperopia-and-astigmatism-residues-a-case-report
#1
Raffaele Nuzzi, Francesca Monteu, Federico Tridico
Radial keratotomy is a refractive surgical technique, widely used in the 80s and early 90s to correct myopia and astigmatism, but now overcome by more recent laser techniques. Important consequences, often in patients with more than 45 years of age, are progressive hyperopic shift and/or an increase in corneal astigmatism, whose main cause seems to be an increase in the curvature radius of the central portion of the cornea. This seems to be due to radial keratotomy incisions - with the consequent need for cross-linking - intraocular pressure, and corneal biomechanical parameters...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28919909/photorefractive-keratectomy-in-the-management-of-postradial-keratotomy-hyperopia-and-astigmatism
#2
Mohammad Ghoreishi, Mohammad-Ali Abtahi, Iman Seyedzadeh, Hamid Fesharaki, Mohadeseh Mohammadnia, Hamidreza Jahanbani-Ardakani, Seyed-Hossein Abtahi
BACKGROUND: The aim of this study is to evaluate the results of photorefractive keratectomy (PRK) in the management of postoperative hyperopia and astigmatism in patients with history of radial keratotomy (RK). MATERIALS AND METHODS: This prospective nonrandomized noncomparative interventional case series enrolled consecutive eyes treated with PRK after RK. In cases, in which (1) wavefront (WF) scan was undetectable during primary examinations; and/or, (2) WF data were not transferable to the excimer laser device, patients were treated with the tissue-saving (TS) mode...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28917415/bilateral-corneal-epithelial-macrocysts-following-hyperopic-laser-in-situ-keratomileusis
#3
Mahmoud O Jaroudi, Carole G Cherfan, Shady T Awwad
A 27-year-old woman had microkeratome-assisted laser in situ keratomileusis (LASIK) for moderate bilateral hyperopia. The preoperative ophthalmologic examination was unremarkable except for minimal lissamine green staining bilaterally on the nasal conjunctiva. On the first postoperative day, the uncorrected distance visual acuity (UDVA) was 20/20 bilaterally and the corneas were clear. Four days later, the patient presented with mild blur in both eyes. Examination showed diffuse bilateral epithelial cysts encompassing the central 6...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28902771/attention-and-visual-motor-integration-in-young-children-with-uncorrected-hyperopia
#4
Marjean Taylor Kulp, Elise Ciner, Maureen Maguire, Maxwell Pistilli, T Rowan Candy, Gui-Shuang Ying, Graham Quinn, Lynn Cyert, Bruce Moore
SIGNIFICANCE: Among 4- and 5-year-old children, deficits in measures of attention, visual-motor integration (VMI) and visual perception (VP) are associated with moderate, uncorrected hyperopia (3 to 6 diopters [D]) accompanied by reduced near visual function (near visual acuity worse than 20/40 or stereoacuity worse than 240 seconds of arc). PURPOSE: To compare attention, visual motor, and visual perceptual skills in uncorrected hyperopes and emmetropes attending preschool or kindergarten and evaluate their associations with visual function...
September 11, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28893456/-rare-causes-of-childhood-leukocoria
#5
J-P Diagne, A S Sow, A M Ka, A M Wane, P A Ndoye Roth, E A Ba, M E De Medeiros, J M Ndiaye, H M Diallo, H Kane, S Sow, M Nguer, E M Sy, P A Ndiaye
PURPOSE: The purpose was to record the causes of leukocoria among children under 10years of age and to determine the proportion of rare causes of leukocoria. PATIENTS AND METHODS: This retrospective study was conducted over a period of ten years, from January 1, 2004 to December 31, 2013, in patients under 10years of age who were referred for leukocoria. RESULTS: Leukocoria represented one of the ten reasons for consultation among children under 10years of age...
September 8, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28880335/refractive-outcomes-of-20-eyes-undergoing-icl-implantation-for-correction-of-hyperopic-astigmatism
#6
Efekan Coskunseven, Isilay Kavadarli, Onurcan Sahin, Belma Kayhan, Ioannis Pallikaris
PURPOSE: To analyze 1-week, 1-month, and 12-month postoperative refractive outcomes of eyes that under-went ICL implantation to correct hyperopic astigmatism. METHODS: The study enrolled 20 eyes of patients with an average age of 32 years (range: 21 to 40 years). The outcomes of spherical and cylindrical refraction, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), vault, and angle parameters were evaluated 1 week, 1 month, and 12 months postoperatively...
September 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28861357/the-evolution-of-refractive-status-in-chinese-infants-during-the-first-year-of-life-and-its-affected-factors
#7
Shu-Juan Yu, Guo-Hua Liu, Yi Liu, Jing Huang, Ming-Lei Han, Bo-Jun Zhao, Zhong-Tao Gai
AIM: To study the evolution of the refractive status and examine the affected factors in infants during the first year of life in a large sample size in China. METHODS: A total of 1258 babies (2516 eyes) aged 32wk gestational age to 1y participated in the study, including 766 premature and 492 full-term infants. First, each baby received an orthoptic examination, slit-lamp checking and fundus imaging. Patients with diseases which might affect refractive status were excluded from the cohort...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28861350/refractive-errors-and-biometry-of-primary-angle-closure-disease-in-a-mixed-malaysian-population
#8
Jelinar Mohamed-Noor, Dhaniah Abd-Salam
AIM: To assess the refractive status, anterior chamber depth (ACD) and axial length (AL) of patients with primary angle-closure disease (PACD). METHODS: Retrospective cohort. Data was collected from charts of all PACD patients treated from April 2013 to December 2015. Analysis was done on 137 patient charts with complete biometric data. Patient demographics, PACD type, refractive status (spherical equivalent), ACD and AL were studied. RESULTS: The median age of 137 subjects [53 with primary angle-closure suspects (PACS), 27 with primary angle-closure (PAC) and 57 with primary angle-closure glaucoma (PACG)] was 68y (range 21-88y)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28860140/lens-power-in-iranian-schoolchildren-a-population-based-study
#9
Hassan Hashemi, Reza Pakzad, Rafael Iribarren, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Akbar Fotouhi
AIMS: To evaluate lens power (LP) in schoolchildren aged 6-12 years. METHODS: This cross-sectional study was conducted in Shahroud, northeast Iran. The students were selected through random cluster sampling and underwent the measurements of biometry, uncorrected and corrected visual acuity, non-cycloplegic and cycloplegic refraction. The LP was calculated using the Bennett formula. RESULTS: Of 6624 invited children, 5620 (84.8%) participated in the study and data of 4870 children were finally analysed...
August 31, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28858003/refractive-status-in-nepalese-pre-term-and-full-term-infants-early-in-life
#10
Samir Uprety, Priya Morjaria, Jyoti B Shrestha, Gauri S Shrestha, Safal Khanal
SIGNIFICANCE: This study suggests that pre-term infants, even without retinopathy of prematurity, are at risk for abnormal refractive development and informs the need for close monitoring of refractive error in such infants, regardless of their retinopathy of prematurity status. PURPOSE: The present study aims to investigate the refractive error trend in Nepalese pre-term infants without retinopathy of prematurity (ROP) in the first 6 months of life and explore the association of refractive error with birth weight (BW) and gestational age (GA)...
August 29, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28856508/correction-of-hyperopia-with-astigmatism-following-radial-keratotomy-with-daily-disposable-plus-spherical-contact-lens-a-case-report
#11
Yun-Wen Chen, Jiahn-Shing Lee, Chiun-Ho Hou, Ken-Kuo Lin
PURPOSE: To report the refractive correction in a case of hyperopia and astigmatism following radial keratotomy. METHODS: A case report. RESULTS: A 47-year-old woman, who had undergone refractive surgery for radial keratotomy in both eyes 22 years before the present study, presented to our clinic with blurred vision. Her best corrected visual acuity, with spectacle correction of +3.50 DS/-1.50 DCX130° in the right eye and +3.75 DS/-1.50 DCX80° in the left eye, was 0...
August 30, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28855546/the-effect-of-topical-administration-of-cyclopentolate-on-ocular-biometry-an-analysis-for-mouse-and-human-models
#12
Furong Huang, Shenghai Huang, Ruozhong Xie, Yanan Yang, Jiaofeng Yan, Xiaowen Cao, Chunlan Zhang, Feng Zhou, Meixiao Shen, Jia Qu, Xiangtian Zhou
Mydriasis with muscarinic antagonists have been used routinely prior to retinal examination and sometimes prior to refractive measurements of the mouse eye. However, biometric changes during topical administration of muscarinic antagonists have not been fully investigated in mice and humans. We found that the mouse eyes treated with cyclopentolate developed a hyperopia with a reduction in both the vitreous chamber depth and axial length. In humans, prior to the cyclopentolate treatment, a 6D accommodative stimulus produced a myopic shift with a reduced anterior chamber depth, choroidal thickness and anterior lens radius of curvature and an increase in lens thickness...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28852117/novel-evidence-for-complement-system-activation-in-chick-myopia-and-hyperopia-models-a-meta-analysis-of-transcriptome-datasets
#13
Nina Riddell, Sheila G Crewther
Myopia (short-sightedness) and hyperopia (long-sightedness) occur when the eye grows too long or short, respectively, for its refractive power. There are currently approximately 1.45 billion myopes worldwide and prevalence is rising dramatically. Although high myopia significantly increases the risk of developing a range of sight-threatening disorders, the molecular mechanisms underlying ocular growth regulation and its relationship to these secondary complications remain poorly understood. Thus, this study meta-analyzed transcriptome datasets collected in the commonly used chick model of optically-induced refractive error...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801261/long-wavelength-red-light-produces-hyperopia-in-juvenile-and-adolescent-tree-shrews
#14
Timothy J Gawne, Alexander H Ward, Thomas T Norton
In infant tree shrews, exposure to narrow-band long-wavelength (red) light, that stimulates long-wavelength sensitive cones almost exclusively, slows axial elongation and produces hyperopia. We asked if red light produces hyperopia in juvenile and adolescent animals, ages when plus lenses are ineffective. Animals were raised in fluorescent colony lighting (100-300 lux) until they began 13days of red-light treatment at 11 (n=5, "infant"), 35 (n=5, "juvenile") or 95 (n=5, "adolescent") days of visual experience (DVE)...
August 29, 2017: Vision Research
https://www.readbyqxmd.com/read/28791068/unilateral-keratectasia-treated-with-femtosecond-fashioned-intrastromal-corneal-inlay
#15
Khosrow Jadidi, Hossein Hasanpour
PURPOSE: In this case report, we describe the surgical procedure of corneal inlay preparation and corneal pocket creation using a femtosecond laser system. CASE REPORT: A 7-year-old girl who presented with unilateral paracentral corneal thinning underwent the surgical procedure of corneal inlay. Preoperatively, the refraction was +10.00-6.00 × 170. One month after the procedure, astigmatism and hyperopia were decreased and the refraction was +5.00-1.25 × 110. CONCLUSION: Femtosecond laser-assisted pocket creation for the implantation of corneal inlays offers accuracy of pocket parameters, enhancing predictability, resulting in better final outcomes, and improving the safety of the procedure...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28791059/risk-factors-for-pterygium-in-ilam-province-iran
#16
Parviz Malekifar, Hamed Esfandiari, Nazanin Behnaz, Fatemeh Javadi, Sima Azish, Mohammad Ali Javadi, Masumeh Kalantarion
PURPOSE: To evaluate the risk factors for pterygium in the dry, high altitude province of Ilam, Iran. METHODS: The study included patients who presented to ophthalmology clinic. The patients were divided into two groups: 210 diagnosed with pterygium or pinguecula (unilateral or bilateral), and 210 healthy controls. Demographic variables, living environment, disease type, disease laterality, family history of pterygium as well as history of smoking, working outdoors, baking, welding, ocular conditions (trachoma keratopathy, glaucoma, refractive error, and dry eye), use of glasses, ultraviolet light exposure, and systemic conditions were collected from both groups and compared for risk assessment...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28774524/clinical-profiles-and-surgical-outcomes-of-adult-esotropia
#17
Mikel Mikhail, Michael Flanders
OBJECTIVE: The aim of this study was to describe the clinical features and surgical outcomes of teenage and adult patients with esotropia undergoing strabismus surgery with adjustable sutures. METHODS: Seventy-three patients were included in this retrospective, cohort study. Patients were stratified into group 1 (35 with childhood-onset esotropia [CET]) and group 2 (38 with adult-onset esophoria-tropia [EPT]). Preoperative immediate, 2-week, and 4-6-month postoperative measurements of ocular alignment, as well as fusional testing, were performed...
August 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28756152/ophthalmologic-features-of-progeria
#18
Iason S Mantagos, Monica E Kleinman, Mark W Kieran, Leslie B Gordon
PURPOSE: To establish the natural history of ophthalmic characteristics in Progeria patients and to determine incidence of ocular manifestations. DESIGN: Retrospective case series of patients with Progeria who were seen between 2007 and 2016. METHODS: Setting: Tertiary-care academic center. PATIENT POPULATION: Fourteen patients (28 eyes) with Hutchinson-Gilford Progeria syndrome were included for statistical analysis from a total of 84 patients who have been enrolled in clinical trials for Progeria at Boston Children's Hospital...
July 27, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28751151/development-of-refractive-errors-what-can-we-learn-from-inherited-retinal-dystrophies
#19
Michelle Hendriks, Virginie J M Verhoeven, Gabriëlle H S Buitendijk, Jan Roelof Polling, Magda A Meester-Smoor, Albert Hofman, Maarten Kamermans, L Ingeborgh van den Born, Caroline C W Klaver
PURPOSE: It is unknown which retinal cells are involved in the retina-to-sclera signaling cascade causing myopia. As inherited retinal dystrophies (IRD) are characterized by dysfunction of a single retinal cell type and have a high risk of refractive errors, a study investigating the affected cell type, causal gene and refractive error in IRDs may provide insight herein. DESIGN: Case-control study. METHODS: Study population: 302 patients with IRD from two ophthalmogenetic centers in the Netherlands...
July 24, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28735646/hyperhomocysteinemia-and-age-related-macular-degeneration-role-of-inflammatory-mediators-and-pyroptosis-a-proposal
#20
Mahavir Singh, Suresh C Tyagi
Age-related macular degeneration (AMD) and pyroptosis cause irreversible vascular changes in the eyes leading to central vision loss in patients. It is the most common eye disease affecting millions of people aged 50years or older, and is slowly becoming a major health problem worldwide. The disease mainly affects macula lutea, an oval-shaped pigmented area surrounding fovea near the center of retina, a region responsible for visual acuity. It is fairly a complex disease as genetics of patients, environmental triggers as well as risk factors such as age, family history of CVDs, diabetes, gender, obesity, race, hyperopia, iris color, smoking, diabetes, exposure to sun light and pyroptosis have all been clubbed together as probable causes of macular degeneration...
August 2017: Medical Hypotheses
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