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Gurvinder Kaur, Satish Thomas, Mahesh Jindal, S M Bhatti
INTRODUCTION: Children with disabilities (other than visual impairment) are at a higher risk of visual impairment as compared to normal population. Majority of the ocular disorders, like refractive errors and strabismus, are easily treatable. As these children depend on their visual inputs for social and academic activities, an early detection and prompt treatment of even a minor visual problem is of utmost importance for them. AIM: To assess the visual function and ocular status of children with disabilities other than visual impairment and to identify the preventable and treatable causes of visual impairment...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
Z G Chen, M C Chen, J Y Zhang, D Q Cai, Q Wang, S S Lin, J W Chen, H L Zhong
Objective: To analyze the influence of the eye biological parameters, height, and weight on the school-age children's refractive status. Methods: Cross-sectional study. A total of 1 656 children (1 656 eyes), aged from 7 to 14 years, were selected from 8 schools in Wenzhou during June 2012 and June 2013. The height and weight of each child were measured, and the body mass index (BMI) was calculated. The eye biological parameters, including axial length (AL), corneal power (C=1/CR), anterior chamber depth (ACD), and white to white (WTW), were measured by IOLMaster (version 5...
November 11, 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Shuai Liu, Shengjie Li, Bingjie Wang, Xiao Lin, Yi Wu, Hong Liu, Xiaomei Qu, Jinhui Dai, Xingtao Zhou, Hao Zhou
PURPOSE: To develop methods of collagen cross-linking (CXL) in the sclera for the treatment of progressive myopia and to investigate the biomechanical and histological changes that occur in as a result. METHODS: Twenty 14-day-old guinea pigs were divided into 3 groups: the cross-linking group (CL, n = 8), non cross-linking group (NCL, n = 8), and control group (n = 4). The scleras of the right eyes of the guinea pigs in the CL group were surgically exposed and riboflavin was dropped onto the irradiation zone for 20 seconds prior to ultraviolet-A (UVA) irradiation...
2016: PloS One
Michael Kinori, Cintia F Gomi, Courtney L Ondeck, David J Schanzlin, Shira L Robbins, David B Granet
PURPOSE: To assess the ability of the WaveScan WaveFront System (VISX Inc, Santa Clara, CA) to measure refractive errors in patients with difficult retinoscopy and to compare results to standard cycloplegic retinoscopy. METHODS: The medical records of patients with an ocular condition that could contribute to difficult or unreliable retinoscopy who underwent nondilated, noncycloplegic evaluation with the WaveScan WaveFront System were reviewed retrospectively. Results were compared to a standard cycloplegic retinoscopy...
November 1, 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Kofi Asiedu, Samuel Kyei, Emmanuel Ekow Ampiah
The aim of the study was to determine the level of agreement between Javal's rule, autorefraction, retinoscopy, and refractive astigmatism and to determine which technique is the most suitable substitute when subjective refraction is not applicable using a clinical sample. A total of 36 subjects, 14 males and 22 females, were involved in this study. The intraclass correlation coefficients between subjective refraction, autorefraction, and retinoscopy were 0.895 and 0.989, respectively, for the spherical equivalent...
2016: Journal of Ophthalmology
Mark Rosenfield, Kenneth J Ciuffreda
PURPOSE: The SVOne is a portable, Hartmann-Shack wavefront aberrometer, which can be attached to a smartphone to determine the refractive error of the eye objectively. Previous results have shown the device to provide measurements equivalent to those of standard clinical techniques in young, healthy adults. The aim of the present study was to compare the findings of the SVOne with retinoscopy, subjective refraction, and two commercially available autorefractors (Retinomax-3 and WAM-5500) in a pediatric population...
September 23, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Negareh Yazdani, Abbas Azimi Khorasani, Hanieh Mirhajian Moghadam, Abbas Ali Yekta, Hadi Ostadimoghaddam, Javad Heravian Shandiz
PURPOSE: To compare three different methods for determining addition in presbyopes. METHODS: The study included 81 subjects with presbyopia who aged 40-70 years. Reading addition values were measured using 3 approaches including the amplitude of accommodation (AA), dynamic retinoscopy (DR), and increasing plus lens (IPL). RESULTS: IPL overestimated reading addition relative to other methods. Mean near addition obtained by AA, DR and IPL were 1...
July 2016: Journal of Ophthalmic & Vision Research
Christopher Mark Dillingham, Jeremy Andrew Guggenheim, Jonathan Thor Erichsen
The centrifugal visual system (CVS) comprises a visually driven isthmic feedback projection to the retina. While its function has remained elusive, we have previously shown that, under otherwise normal conditions, unilateral disconnection of centrifugal neurons in the chick affected eye development, inducing a reduced rate of axial elongation that resulted in a unilateral hyperopia in the eye contralateral to the lesion. Here, we further investigate the role of centrifugal neurons in ocular development in chicks reared in an abnormal visual environment, namely constant light...
August 17, 2016: Brain Structure & Function
J Y Zhang, Q Wang, S S Lin, J W Chen, H L Zhong, D Q Ca, Z G Chen
OBJECTIVE: To investigate the incidence and features of myopia in children aged 7 to 14 years. METHODS: Cross-sectional study. A total of 2 226 children (2 226 eyes) aged 7 to 14 years were selected from school during June 2012 and January 2015. Refraction was measured by fast cycloplegic retinoscopy. SPSS16.0 was used to analyze the data. Ocular refractive parameters, including axial length (AL), corneal power, anterior chamber depth, and white to white, were measured by IOLMaster (version 5...
July 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
Sujata Guha, Sanil Shah, Khyati Shah, Preeti Hurakadli, Debalina Majee, Shyamali Gandhi
BACKGROUND: Correction of significant refractive errors in childhood helps in preventing amblyopia and strabismus. India has a huge demand for eye-care services related to uncorrected refractive errors with limited manpower resources. This can be overcome by autorefractors, which are free of operator bias, do not need skilled eye-care professionals and can be operated with ease. Hence, the purpose of this study, the first in the Indian population, was to determine the accuracy of autorefraction compared to traditional retinoscopy under cycloplegia...
July 17, 2016: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
Arne Ohlendorf, Alexander Leube, Siegfried Wahl
PURPOSE: To investigate the inter-device agreement and mean differences between a newly developed digital phoropter and the two standard methods (trial frame and manual phoropter). METHODS: Refractive errors of two groups of participants were measured by two examiners (examiner 1 (E1): 36 subjects; examiner 2 (E2): 38 subjects). Refractive errors were assessed using a trial frame, a manual phoropter and a digital phoropter. Inter-device agreement regarding the measurement of refractive errors was analyzed for differences in terms of the power vector components (spherical equivalent (SE) and the cylindrical power vector components J0 and J45) between the used methods...
2016: Healthcare (Basel, Switzerland)
Erhan Ugurlu, Gokhan Pekel, Goksel Altinisik, Kerem Bozkurt, Ilknur Can, Fatma Evyapan
INTRODUCTION: Chronic Obstructive Pulmonary Disease (COPD) has multisystemic implications and comorbidities. Hypoxia and systemic inflammation are thought to involve oculary structures. In this study, our aim is to evaluate retinal nerve fiber and choroidal thickness and retinal vessel diameter using the Spectral-domain optical coherence tomography (SD-OCT) in COPD subjects. METHODS: 43 subjects diagnosed with COPD according to the Chronic Obstructive Lung Disease criteria at the Pulmonology Department of Pamukkale University were enrolled in the study...
July 12, 2016: Clinical Respiratory Journal
Jun Du, Guang-Ying Zheng, Cheng-Lin Wen, Xiao-Fang Zhang, Yu Zhu
AIM: To evaluate the clinical value of wedge resection at corneal limbus in patients with traumatic corneal scarring and high irregular astigmatism. METHODS: Patients with traumatic corneal astigmatism received wedge resection at least 6mo after suture removal from corneal wound. The uncorrected distance visual acuities (UCVA) and best corrected distance visual acuities (BCVA), pre- and post-operation astigmatism, spherical equivalent (SE), safety and complications were evaluated...
2016: International Journal of Ophthalmology
Rick F Sanchez, Ronald Becker, Charlotte Dawson, Natàlia Escanilla, Richard Lam
OBJECTIVES: To calculate the size and dioptric power of a posterior chamber intraocular lens (IOL) to achieve emmetropia in adult rabbits and to compare the dioptric power calculation results using a proprietary predictive formula to a retinoscopy-based method. ANIMALS STUDIED: Three wild rabbit cadavers, seven pet rabbits with cataracts and ten healthy pet rabbits. MATERIALS AND METHODS: Implant size was calculated using a capsular tension ring (CTR) (Acrivet(®) , Berlin, Germany)...
June 29, 2016: Veterinary Ophthalmology
Zhongqiang Zhou, Tingting Chen, Ling Jin, Dongxing Zheng, Shangji Chen, Mingguang He, Josh Silver, Leon Ellwein, Bruce Moore, Nathan G Congdon
PURPOSE: To study, for the first time, the effect of wearing ready-made glasses and glasses with power determined by self-refraction on children's quality of life. METHODS: This is a randomized, double-masked non-inferiority trial. Children in grades 7 and 8 (age 12-15 years) in nine Chinese secondary schools, with presenting visual acuity (VA) ≤6/12 improved with refraction to ≥6/7.5 bilaterally, refractive error ≤-1.0 D and <2.0 D of anisometropia and astigmatism bilaterally, were randomized to receive ready-made spectacles (RM) or identical-appearing spectacles with power determined by: subjective cycloplegic retinoscopy by a university optometrist (U), a rural refractionist (R) or non-cycloplegic self-refraction (SR)...
June 20, 2016: Acta Ophthalmologica
Rupal H Trivedi, M Edward Wilson, Mae Millicent W Peterseim, Carrie Papa, Mahvash Husain
PURPOSE: To compare refractive data of Plusoptix AO9 (Plusoptix, Inc., Atlanta, GA) and Spot (Welch Allyn, Skaneateles Falls, NY) photoscreeners with retinoscopy in pseudophakic eyes of children. METHODS: In this prospective study, patients underwent testing with the Plusoptix and Spot photoscreeners prior to their examination by a pediatric ophthalmologist masked to the results of both photoscreeners. Data including testability and estimated refractions were entered into a Research Electronic Data Capture database for statistical analysis...
May 1, 2016: Journal of Pediatric Ophthalmology and Strabismus
Elvan Yalcın, Pinar Sultan, Senay Yılmaz, Ioannis G Pallikaris
PURPOSE: To compare Plusoptix (Gmbh, Nuremberg, Germany), 2WIN (Adaptica, Padua, Italy), the benchtop refractometer (Auto-Kerato-Refractometer KR-8900; Topcon Co, Tokyo, Japan), and retinoscopy with regard to the consistencies. MATERIALS AND METHODS: In our prospective study, 200 eyes of 100 patients were included. We analyzed the demographics and characteristics of the patients, the percentage of patients from whom measurements could not be obtained, the measurements from both patients' eyes of pupil diameter, spherical, cylindrical, axis, and spherical equivalence...
May 4, 2016: Seminars in Ophthalmology
Jana Bregman, Sean P Donahue
BACKGROUND: Photoscreening instruments have been widely validated in pediatric ophthalmology clinics and field studies; however, validation by general pediatricians is lacking. We performed the first prospective, multisite evaluation of a commercially available photoscreener in the medical home. METHODS: Eleven practices in Middle Tennessee recruited over 3,100 children between 12 months and 5 years to be screened at well-child examinations. Participants were those who received a "refer" result; controls received a "pass...
April 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Ting Su, Xiaoshan Min, Shuangzhen Liu, Fengyun Li, Xingping Tan, Yanni Zhong, Shaoling Deng
OBJECTIVE: To compare the results of the three methods of Suresight handheld autorefractor, table-mounted autorefractor and retinoscopy in examination of juveniles patients with or without cycloplegia.
 METHODS: Firstly, 156 eyes of 78 juveniles (5 to 17 years old) were examined by using WelchAllyn Suresight handheld autorefractor and NIDEK ARK-510A table-mounted autorefractor with or without cycloplegia; secondly, retinoscopy was performed with cycloplegia.
 RESULTS: The spherical power measured by methods without cycloplegia were significantly greater than those measured with cycloplegia (P<0...
February 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
Erping Long, Haotian Lin
Accommodation is an important function of the human eye, which can change the parameters of ocular refractive system and also has a strong correlation with the development of myopia and presbyopia. Several subjective measurements have been applied in accommodation assessment such as push-up test, push-down test and minus-lens procedures. It can be measured objectively by measuring the change in refraction of the eye with dynamic retinoscopy or autorefractor. This article reviews the application of measurement of accommodative amplitude and research progress in accommodation, providing clinical information for further studies...
September 2015: Eye Science
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