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https://www.readbyqxmd.com/read/29034156/intraocular-lens-opacification-after-descemet-s-stripping-automated-endothelial-keratoplasty
#1
Meng-Sheng Lee, I-Lun Tsai, Ching-Yao Tsai, Li-Lin Kuo, Shiow-Wen Liou, Lin-Chung Woung
Compared with conventional penetrating keratoplasty, Descemet's stripping automated endothelial keratoplasty (DSAEK) more effectively maintain global integrity and rapid vision rehabilitation with less ocular surface disorders in patients with endothelial dysfunction. Here, we report a case of a 76-year-old woman who experienced opacification of a hydrophilic intraocular lens (IOL) approximately 10 months after DSAEK. The patient with no history of systemic disease developed pseudophakic bullous keratopathy in the right eye 2 years after undergoing cataract surgery...
July 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29034154/intraocular-pressure-monitoring-by-rebound-tonometry-in-children-with-myopia
#2
Jenchieh Weng, I-Lun Tsai, Li-Lin Kuo, Ching-Yao Tsai, Lin-Chung Woung, Ya-Chuan Hsiao
BACKGROUND/PURPOSE: Topical atropine treatment is generally accepted to retard the progression of myopia, but it is associated with side effects such as photophobia and elevation of intraocular pressure (IOP). IOP measurements in children are challenging. The traditional applanation tonometry by direct contact with the cornea will require patient's cooperation. The rebound tonometer, using a dynamic electromechanical method for measuring IOP, shows good correlation with traditional tonometry...
July 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29032435/environmental-factors-associated-with-ocular-morbidity-among-children-in-three-ecological-regions-of-nepal-a-phase-ii-nepal-pediatric-ocular-diseases-study
#3
Srijana Adhikari, Ujjowala Shrestha, Mohan K Shrestha, Manish Paudyal, Bijaya Thapa, Murari Shrestha
PURPOSE: The Nepal Pediatric Ocular Diseases Study (NPODS) was a 3-year (January 2012-December 2014) longitudinal study carried out in three ecological regions of Nepal to understand the magnitude of the problems of childhood ocular morbidity and blindness. Based on the results of this study, a second phase of NPODS was undertaken to understand the risk factors associated with childhood ocular diseases. This paper analyzes environmental factors. METHOD: This was a nested case-control study with study population selected from the same cohort of children included in the baseline survey of NPODS...
October 14, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/29032195/global-causes-of-blindness-and-distance-vision-impairment-1990-2020-a-systematic-review-and-meta-analysis
#4
Seth R Flaxman, Rupert R A Bourne, Serge Resnikoff, Peter Ackland, Tasanee Braithwaite, Maria V Cicinelli, Aditi Das, Jost B Jonas, Jill Keeffe, John H Kempen, Janet Leasher, Hans Limburg, Kovin Naidoo, Konrad Pesudovs, Alex Silvester, Gretchen A Stevens, Nina Tahhan, Tien Y Wong, Hugh R Taylor
BACKGROUND: Contemporary data for causes of vision impairment and blindness form an important basis of recommendations in public health policies. Refreshment of the Global Vision Database with recently published data sources permitted modelling of cause of vision loss data from 1990 to 2015, further disaggregation by cause, and forecasts to 2020. METHODS: In this systematic review and meta-analysis, we analysed published and unpublished population-based data for the causes of vision impairment and blindness from 1980 to 2014...
October 10, 2017: Lancet Global Health
https://www.readbyqxmd.com/read/29032110/use-of-donors-predisposed-by-corneal-collagen-cross-linking-in-penetrating-keratoplasty-for-treating-the-patients-with-keratoconus
#5
Ting Huang, Ruifen Ye, Chen Ouyang, Chao Hou, Yunwei Hu, Qianni Wu
PURPOSE: To investigate whether use of donors predisposed by corneal collagen cross-linking (CXL) reduced myopic refractive errors for keratoconic eyes after penetrating keratoplasty (PK). DESIGN: Randomized controlled trial. METHODS: One hundred sixteen eyes of 116 patients with keratoconus from Zhongshan Ophthalmic Center were enrolled. Using stratified block randomization, eligible eyes were assigned to CXL graft group (Group1) or conventional graft group (Group2)...
October 12, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29029601/prevalence-and-risk-factors-for-myopia-in-older-adult-east-chinese-population
#6
Cailian Xu, Chenwei Pan, Chunhua Zhao, Mingchao Bi, Qinghua Ma, Jianhui Cheng, E Song
BACKGROUND: To determine the prevalence and associated factors for myopia and high myopia among older population in a rural community in Eastern China. METHODS: A community-based, cross-sectional survey was conducted in the Weitang town located in Suzhou, an urban metropolis in East China. A total of 5613 Chinese residents aged 60 years and older were invited to complete a questionnaire and participated in a detailed eye examination,including measurements of visual acuity and refractive error using autorefraction and subjective refraction...
October 13, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29027198/shape-analysis-of-spatial-relationships-between-orbito-ocular-and-endocranial-structures-in-modern-humans-and-fossil-hominids
#7
Ana Sofia Pereira-Pedro, Michael Masters, Emiliano Bruner
The orbits and eyes of modern humans are situated directly below the frontal lobes and anterior to the temporal lobes. Contiguity between these orbital and cerebral elements could generate spatial constraints, and potentially lead to deformation of the eye and reduced visual acuity during development. In this shape analysis we evaluate whether and to what extent covariation exists between ocular morphology and the size and spatial position of the frontal and temporal areas in adult modern humans. Magnetic resonance imaging (MRI) was used to investigate patterns of variation among the brain and eyes, while computed tomography (CT) was used to compare cranial morphology in this anatomical region among modern humans, extinct hominids and chimpanzees...
October 13, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29023313/mini-scleral-lenses-for-correction-of-refractive-errors-after-radial-keratotomy
#8
Hsiao-Sang Chu, I-Jong Wang, Grace A Tseng, Wei-Li Chen, Yu-Chih Hou, Fung-Rong Hu
OBJECTIVE: To evaluate the factors affecting clinical outcomes of correcting cumulative refractive errors or irregular astigmatism after radial keratotomy (RK) using mini-scleral lenses. METHODS: We retrospectively analyzed 36 eyes receiving mini-scleral lenses after RK from July 2011 to June 2016. Analyses included age, refractive errors, best spectacle-corrected visual acuity (BSCVA), best contact lens-corrected visual acuity (BCLCVA), topographic indices, RK treatment zone diameter (TZD), power difference (PrD) within the RK treatment zone, and decentration distance (DD) of the RK treatment zone center...
October 11, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/29022958/unilateral-lattice-corneal-dystrophy-in-a-young-female-a-unique-case-report
#9
Anuradha Raj, Renu Dhasmana, Harsh Bahadur
BACKGROUND: Unilateral lattice corneal dystrophy is a rare entity. OBJECTIVE: To highlight the evidence of unilateral lattice corneal dystrophy in a young female. CASE: A young 28 years old female presented to the outpatient department of Ophthalmology with slowly progressive diminution of vision in left eye for one month. On ophthalmological examination best corrected visual acuity (BCVA) was 20/20 and 20/40 with refractive error of plano and -0...
January 2017: Nepalese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29022952/ocular-morbidity-among-porters-at-high-altitudes
#10
Subodh Gnyawali, Gauri Shankar Shrestha, Safal Khanal, Talisa Dennis, John C Spencer
INTRODUCTION: High altitude, often characterized by settings over 2400m, can be detrimental to the human body and pose a significant risk to ocular health. Reports concerning various ocular morbidities occurring as a consequence of high altitude are limited in the current literature. OBJECTIVES: This study was aimed at evaluating the ocular health of porters working at high altitudesof Himalayas in Nepal. MATERIALS AND METHODS: A mobile eye clinic was set up in Ghat and patient data were collected from its out- patient unit by a team of seven optometrists which was run for five days...
January 2017: Nepalese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29022293/correlation-between-uncorrected-visual-acuity-and-macular-distortion-in-idiopathic-epiretinal-membrane-patients
#11
Jang Hoon Lee, Sung Pyo Park, Yong Kyu Kim
PURPOSE: To evaluate the association between degree of retinal abnormalities and uncorrected visual acuity (UCVA) in idiopathic epiretinal membrane (ERM) patients with a small amount of refractive error. METHODS: We retrospectively reviewed 49 eyes (37 patients) of idiopathic ERM patients. We investigated the association between visual acuity and macular status (central macular thickness [CMT], outer retinal integrity score, and inner retinal irregularity index) that was assessed by optical coherence tomography using multiple linear regression analysis...
August 26, 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/29018763/ocular-manifestations-of-sickle-cell-disease-and-genetic-susceptibility-for-refractive-errors
#12
Palak Shukla, Henu Verma, Santosh Patel, P K Patra, L V K S Bhaskar
PURPOSE: Sickle cell disease (SCD) is the most common and serious form of an inherited blood disorder that lead to higher risk of early mortality. SCD patients are at high risk for developing multiorgan acute and chronic complications linked with significant morbidity and mortality. Some of the ophthalmological complications of SCD include retinal changes, refractive errors, vitreous hemorrhage, and abnormalities of the cornea. MATERIALS AND METHODS: The present study includes 96 SCD patients...
April 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/29018762/visual-performance-after-excimer-laser-photorefractive-keratectomy-for-high-myopia
#13
Yu-Ling Liu, Chien-Chi Tseng, Chang-Ping Lin
PURPOSE: To evaluate the efficacy, safety, predictability, and visual performance of excimer laser photorefractive keratectomy (PRK) for myopia greater than -8 diopters (D). METHODS: Fifty-four patients (104 eyes) with myopia from -8D to -13D and cylinder up to -4D received surface ablation technique with the Allegretto wave version 1009-1 excimer laser to correct their refractive error. The patients were examined on days 1, 3, 7, and 14 and 1, 3, 6, and 12 months postoperatively...
April 2017: Taiwan Journal of Ophthalmology
https://www.readbyqxmd.com/read/28992107/flow-in-the-anterior-chamber-of-the-eye-with-an-implanted-iris-fixated-artificial-lens
#14
Jennifer H Tweedy, Jan O Pralits, Rodolfo Repetto, Paolo Soleri
Flow in the aqueous humour that fills the anterior chamber of the eye occurs in response to the production and drainage of the aqueous humour, and also due to buoyancy effects produced by thermal gradients. Phakic intraocular lenses are manufactured lenses that are surgically inserted in the eyes of patients to correct refractive errors. Their presence has a dramatic effect on the circulation of the aqueous humour, resulting a very different flow in the anterior chamber, the effects of which have not been extensively investigated...
August 7, 2017: Mathematical Medicine and Biology: a Journal of the IMA
https://www.readbyqxmd.com/read/28991853/simulated-keratometry-versus-total-corneal-power-by-ray-tracing-a-comparison-in-prediction-accuracy-of-intraocular-lens-power
#15
Giacomo Savini, Kenneth J Hoffer, Domenico Schiano Lomoriello, Pietro Ducoli
PURPOSE: To investigate the relationship between corneal powers measured by simulated keratometry (Sim-K) and ray tracing and understand whether their difference influences intraocular lens (IOL) power calculation. METHODS: In a first sample of healthy eyes, corneal curvature was measured using a rotating Scheimpflug camera (Sirius, CSO). Sim-K was obtained from anterior corneal curvature using the 1.3375 keratometric index. Ray tracing was performed through both corneal surfaces to calculate the total corneal power (TCP)...
November 2017: Cornea
https://www.readbyqxmd.com/read/28991611/effect-of-fixation-stability-during-biometry-measurements-on-refractive-prediction-accuracy-in-highly-myopic-eyes
#16
Xiangjia Zhu, Wenwen He, Yu Du, Yi Lu
PURPOSE: To assess the effect of preoperative biometry fixation stability on postoperative refractive errors in highly myopic cataractous eyes. SETTING: Eye and ENT Hospital of Fudan University, Shanghai, China. DESIGN: Prospective cohort study. METHODS: Eyes of highly myopic patients and emmetropic controls were included. Routine ophthalmologic examinations and measurement of fixation stability in the 63% and 95% bivariate contour ellipse areas (BCEAs) were conducted preoperatively...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991610/intraocular-lens-power-calculation-for-eyes-with-high-and-low-average-keratometry-readings-comparison-between-various-formulas
#17
Olga Reitblat, Adi Levy, Guy Kleinmann, Tsahi T Lerman, Ehud I Assia
PURPOSE: To compare the accuracy of intraocular lens power prediction for eyes with average keratometry (K) readings greater than 46.00 diopters (D) and lower than 42.00 D. SETTING: Ein-Tal Eye Center, Tel-Aviv, Israel. DESIGN: Retrospective case series. METHODS: Eyes having cataract extraction surgery with steep and flat preoperative corneal curvatures determined with the Lenstar-LS900 device were enrolled. Refractive prediction errors for the Barrett Universal II, Haigis, Hill-RBF, Hoffer-Q, Holladay 1, Holladay 2, Olsen, and SRK/T formulas were compared...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991609/optimized-keratometry-and-total-corneal-astigmatism-for-toric-intraocular-lens-calculation
#18
Giacomo Savini, Kristian Næser, Domenico Schiano-Lomoriello, Pietro Ducoli
PURPOSE: To compare keratometric astigmatism (KA) and different modalities of measuring total corneal astigmatism (TCA) for toric intraocular lens (IOL) calculation and optimize corneal measurements to eliminate the residual refractive astigmatism. SETTING: G.B. Bietti Foundation IRCCS, Rome, Italy. DESIGN: Prospective case series. METHODS: Patients who had a toric IOL were enrolled. Preoperatively, a Scheimpflug camera (Pentacam HR) was used to measure TCA through ray tracing...
September 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28991415/refractive-error-through-the-lens-of-the-patient
#19
EDITORIAL
Joshua Foreman, Mohamed Dirani, Hugh Taylor
No abstract text is available yet for this article.
September 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28991337/accuracy-of-a-new-swept-source-optical-coherence-tomography-biometer-for-iol-power-calculation-and-comparison-to-iolmaster
#20
Giacomo Savini, Kenneth J Hoffer, H John Shammas, Jaime Aramberri, Jinhai Huang, Piero Barboni
PURPOSE: To investigate the accuracy of the measurements provided by a new optical biometer (OA-2000, Tomey Corporation, Nagoya, Japan) for calculating the intraocular lens (IOL) power and to compare the refractive outcomes to those obtained with the IOLMaster 500 (Carl Zeiss Meditec, Jena, Germany). METHODS: In this interventional multicenter study, consecutive patients having cataract surgery were enrolled. Only the IOL model used in the largest sample of patients was selected and the eyes implanted with that IOL were subsequently analyzed...
October 1, 2017: Journal of Refractive Surgery
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