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High myopia

Sandra Wagner, Arne Ohlendorf, Frank Schaeffel, Siegfried Wahl
The purpose of this study was to investigate whether a reduction of the accommodative lag is possible by training the accuracy of accommodation using auditory biofeedback. Accommodation responses were measured in thirty-one young adults with myopia for dioptric target distances of 2.0, 2.5, and 3.0D using an eccentric infrared photorefractor. For the biofeedback training, subjects were randomly assigned to an experimental (n=15) or a control group (n=16). Subjects of the experimental group were provided with two tones while fixating a target, one tone was related to their accommodative response and the second to the target distance...
October 20, 2016: Vision Research
Pilar S Merino, Rebeca E Vera, Laura G Mariñas, Pilar S Gómez de Liaño, Jose V Escribano
PURPOSE: To study the types of acquired restrictive strabismus treated in a tertiary hospital and the outcome of treatment with botulinum toxin. METHODS: We performed a 10-year retrospective study of patients with restrictive strabismus aged ≥18 years who were treated with botulinum toxin. Treatment was considered successful if the final vertical deviation was ≤5 PD, horizontal deviation ≤10 PD, with no head turn or diplopia. RESULTS: We included 27 cases (mean age, 61...
October 19, 2016: Journal of Optometry
Rohit Varma, Mina Torres, Roberta McKean-Cowdin, Fen Rong, Chunyi Hsu, Xuejuan Jiang
PURPOSE: To estimate the prevalence of refractive errors in adult Chinese Americans, and evaluate factors associated with myopia and high myopia. DESIGN: A population-based, cross-sectional study. METHODS: Chinese Americans 50 years and older residing in Monterey Park, California, were recruited. Noncycloplegic automated refraction with supplemental subjective refraction was performed. Myopia, high myopia, hyperopia, and high hyperopia were defined as a spherical equivalent of < -0...
October 18, 2016: American Journal of Ophthalmology
J Willem L Tideman, Margaretha C C Snabel, Milly S Tedja, Gwyneth A van Rijn, King T Wong, Robert W A M Kuijpers, Johannes R Vingerling, Albert Hofman, Gabriëlle H S Buitendijk, Jan E E Keunen, Camiel J F Boon, Annette J M Geerards, Gregorius P M Luyten, Virginie J M Verhoeven, Caroline C W Klaver
Importance: Myopia (ie, nearsightedness) is becoming the most common eye disorder to cause blindness in younger persons in many parts of the world. Visual impairment due to myopia is associated with structural changes of the retina and the globe because of elongation of the eye axis. How axial length-a sum of the anterior chamber depth, lens thickness, and vitreous chamber depth-and myopia relate to the development of visual impairment over time is unknown. Objectives: To evaluate the association between axial length, spherical equivalent, and the risk of visual impairment and to make projections of visual impairment for regions with high prevalence rates...
October 20, 2016: JAMA Ophthalmology
Ricardo Noguera Louzada, Daniela Ferrara, Eduardo Amorim Novais, Eric Moult, Emily Cole, Mark Lane, James Fujimoto, Jay S Duker, Caroline R Baumal
To describe the appearance of a scleral-derived feeder vessel in a highly myopic eye with secondary choroidal neovascularization (CNV) as visualized on both en face high-speed swept-source (SS) optical coherence tomography angiography (OCTA) prototype, and a commercially available spectral-domain (SD) OCTA, with the corresponding en face and cross-sectional structural OCT images. In this case report, a 60-year-old white male presented with high myopia and secondary CNV in the right eye, previously treated with anti-vascular endothelial growth factor, and was imaged on both SD-OCT and SS-OCT...
October 1, 2016: Ophthalmic Surgery, Lasers & Imaging Retina
Kaori Kasahara, Muka Moriyama, Kei Morohoshi, Takeshi Yoshida, Noriaki Simada, Natsuko Nagaoka, Tae Yokoi, Kosei Shinohara, Yuichiro Kaneko, Mitsuki Suga, Kyoko Ohno-Matsui
PURPOSE: To investigate the 6-year outcome of intravitreal bevacizumab (IVB) to treat eyes with active choroidal neovascularization (CNV) due to pathologic myopia. METHODS: Medical records of 36 eyes of 35 consecutive patients with high myopia (refractive error ≥8 D or axial length ≥26.5 mm) and active CNV, who had been treated with IVB and followed for ≥6 years were analyzed. The factors that predicted the best-corrected visual acuity (BCVA) at 6 years after IVB were determined by multiple regression analyses...
October 10, 2016: Retina
Carlos A Medina, Angelica G Ortiz, Nidhi Relhan, William E Smiddy, Justin H Townsend, Harry W Flynn
PURPOSE: To report the clinical features, possible associations and treatment outcomes of patients with macular hole after pars plana vitrectomy (PPV) (single or multiple) for rhegmatogenous retinal detachment (RD). METHODS: Retrospective consecutive case series from July 2009 to July 2014. RESULTS: In the 15 study patients, the average time from RD surgery to macular hole diagnosis was 119 days (range: 41-398 months). Possible associations include epiretinal membrane (73%, 11/15 patients), macula-off RD (60%, 9/15 patients), recurrent RD (47%, 7/15 patients), and high myopia (56%, 5/9 patients)...
October 11, 2016: Retina
Kyoko Ohno-Matsui
PURPOSE: Despite being a major cause of visual impairment worldwide, pathologic myopia has not been clearly and consistently defined. This lack of a standardized definition has made comparisons among epidemiological studies difficult. Therefore, the purpose of this review was to summarize the definitions of pathologic myopia. METHODS: A literature search was conducted of Pubmed to identify reports presenting definitions of pathologic myopia. RESULTS: Although cut-off values for refractive error and increased axial length have been used in some studies, a definition based solely on such values is considered to just show a 'high degree of myopia'...
October 11, 2016: Retina
Nooshin Bazzazi, Siamak Akbarzadeh, Minoo Yavarikia, Jalal Poorolajal, Daniel F Fouladi
PURPOSE: To examine an association between high myopia and diabetic retinopathy (DR) in diabetic patients with high myopic anisometropia. METHODS: A total of 116 white diabetic patients (232 eyes) with high myopia (spherical equivalent > -5.00 diopters, D) anisometropia (difference ≥ -6 D) were enrolled in this cross-sectional, contralateral eye study. The frequency of DR was compared between the high myopic and the contralateral eyes. RESULTS: Compared with the fellow eyes, DR was significantly less frequent in high myopic side (27...
September 30, 2016: Retina
Gow-Lieng Tseng, Cheng-Yu Chen
High myopia is a global eye health problem because of its high incidence of sight-threatening complications. Due to the role of awareness, self-examination, and preventive behavior in prevention of morbidity of high myopia complications, promoting knowledge, capabilities, and attitude of high myopic personnel are required in this regard.In this quasi-experiment study, 31 freshmen with high myopia in a national university were enrolled in 2014. The data were collected by validated and reliable questionnaire based on health belief model (HBM) and self-efficacy theory...
October 2016: Medicine (Baltimore)
Jiali Li, Xueshan Xiao, Shiqiang Li, Xiaoyun Jia, Xiangming Guo, Qingjiong Zhang
It has been previously reported that mutations in retinal G protein coupled receptor (RGR) are associated with retinitis pigmentosa. The present study aims to systemically analyze the potential role of variants of RGR in retinal diseases. Variants in coding regions and splice sites of RGR were selected from a whole exome sequencing dataset of 820 probands with various forms of genetic ocular diseases. Potential variants of RGR were further confirmed by Sanger sequencing and analyzed in available family members...
October 13, 2016: Molecular Medicine Reports
Wei-Shan Tsao, Hsi-Pao Hsieh, Yi-Ting Chuang, Min-Muh Sheu
PURPOSE: Students with cognitive impairment are at increased risk of suffering from visual impairment due to refractive errors and ocular disease, which can adversely influence learning and daily activities. The purpose of this study was to evaluate the ocular and visual status among students at the special education school in Hualien. METHODS: All students at the National Hualien Special Education School were evaluated. Full eye examinations were conducted by a skilled ophthalmologist...
October 11, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
Sarah Moussa, Alois Dexl, Eva Maria Krall, Marie Dietrich, Eva-Maria Arlt, Günther Grabner, Josef Ruckhofer
PURPOSE: To evaluate and compare visual and refractive outcomes after laser-assisted in situ keratomileusis (LASIK) surgery for the correction of myopia or myopic astigmatism using 3 different treatment protocols. METHODS: We included 736 eyes of 369 patients (age 18-62 years) divided into 3 groups: 235 eyes of 118 patients (MEL80 group) undergoing LASIK using optimized aspheric ablation profiles (MEL80 excimer laser; Carl Zeiss Meditec), 248 eyes of 124 patients (Wavescan group) undergoing wavefront-guided (WFG) LASIK (STAR S4IR excimer laser + Wavescan aberrometer; Abbott Medical Optics), and 253 eyes of 127 patients (iDesign group) undergoing WFG LASIK (STAR S4IR excimer laser + iDesign system; Abbott Medical Optics)...
October 10, 2016: European Journal of Ophthalmology
Manli Liu, Jianchao Wang, Wen Zhong, Danyang Wang, Yugui Zhou, Quan Liu
PURPOSE: To evaluate the clinical results of suction loss in eyes during small incision lenticule extraction (SMILE). METHODS: This prospective paired-eye case study enrolled 8,490 eyes of 4,296 patients, of which 35 eyes experienced suction loss during the SMILE procedure while being treated for myopia or myopic astigmatism. The eyes with suction loss were re-treated with SMILE, femtosecond laser-assisted LASIK (FS-LASIK), or pseudo SMILE, and the fellow eyes were treated with SMILE...
October 1, 2016: Journal of Refractive Surgery
Tommy C Y Chan, Marco C Y Yu, Alex L K Ng, George P M Cheng, Jiamei Zhang, Yan Wang, Vishal Jhanji
PURPOSE: To analyze the visual and refractive outcomes of LASIK with and without simultaneous cross-linking for correction of myopia. METHODS: Patients who received femtosecond laser-assisted LASIK with and without adjunctive cross-linking according to patient's preference were examined longitudinally for 6 months. Patients with myopic manifest refraction spherical equivalent of 5.00 diopters (D) or greater and estimated residual stromal thickness of greater than 250 µm were included...
October 1, 2016: Journal of Refractive Surgery
Yoshiaki Shimada, Masayuki Horiguchi
We report a case of a 38-year-old man who presented with a recently self-detected lump under his left eyebrow. Previous ophthalmological history was unremarkable except for unilateral high myopia (left eye) since childhood. The appearance of the left eye was seemingly normal; however, with the top lid pulled up on downward gaze, a dark brown bulge emerged. The bulge was 10 × 7 mm and approximately 4 mm in height, and was covered by the extended superior rectus muscle. The diagnosis of equatorial staphyloma was made after coronal T1-weighted magnetic resonance imaging of the orbit revealed the dilatation of the vitreous cavity...
May 2016: Case Reports in Ophthalmology
Ke Zheng, Tian Han, Xingtao Zhou
BACKGROUND: To investigate accommodative response and accommodative lag changes after femtosecond laser small incision lenticule extraction (SMILE) for moderate to high myopia correction. METHODS: A total of 32 eyes of 32 patients with no strabismus who underwent SMILE were enrolled in this prospective clinical study. The accommodative response was obtained viewing monocularly with spherical equivalent refractive error corrected, using an open-field autorefractor at different stimulus levels (2...
October 4, 2016: BMC Ophthalmology
Alireza Mirshahi, Katharina A Ponto, Dagmar Laubert-Reh, Benjamin Rahm, Karl J Lackner, Harald Binder, Norbert Pfeiffer, Josef M Unterrainer
Purpose: To analyze the association between myopia and cognitive performance. Methods: A cohort of the population-based Gutenberg Health Study included 3819 eligible enrollees between 40 and 79 years. We used the Tower of London (TOL) test to assess cognitive performance. Myopia was defined as a spherical equivalent (SE) ≤ -0.5 diopters (D) via noncycloplegic autorefractometry. We conducted linear mixed models with the SE as the dependent variable and the age, sex, duration of education, and TOL score as covariates...
October 1, 2016: Investigative Ophthalmology & Visual Science
Hassan Hashemi, Reza Ghaffari, Mohammad Miraftab, Soheila Asgari
PURPOSE: To compare 18-month outcomes between femtosecond laser-assisted LASIK (femto-LASIK) and photorefractive keratectomy with mitomycin-C (PRK-MMC) for myopia of more than 7.0 D in terms of visual acuity and quality. METHODS: In this comparative nonrandomized clinical trial, 60 eyes from 30 patients (30 eyes in each group) were enrolled. The two procedures were compared in terms of 18-month changes in uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent, ocular and corneal higher order aberrations (HOAs), and contrast sensitivity (CS)...
October 3, 2016: International Ophthalmology
Sowmya Ravikumar, Arthur Bradley, Shrikant Bharadwaj, Larry N Thibos
PURPOSE: To test the hypothesis that binocular depth of field can be expanded while retaining high-quality vision at intermediate distances by combining anisometropia (monovision) and simultaneous vision bifocals. SETTING: School of Optometry, Indiana University, Bloomington, Indiana, USA. DESIGN: Prospective research study. METHODS: A computational polychromatic model was used to simulate retinal images as seen through a pseudophakic eye with a diffractive bifocal for a range of target distances...
September 2016: Journal of Cataract and Refractive Surgery
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