MyMedR

Cerebral arteriovenous malformation--an unusual site

Rathakrishnan V, Mohd TH, Kandiah R

Neuroradiology, 1989;31(1):107.

Matched MeSH terms: Vision Disorders/etiology

Loh KY, Ogle J

Med J Malaysia, 2004 Oct;59(4):562-8, quiz 569.

Visual impairment among the elderly is a major health problem. With advancing age, the normal function of eye tissues decreases and there is an increased incidence of ocular pathology. Demographic studies have shown that age is the best predictor of blindness and visual impairment. The most common causes of age related visual impairment in the elderly are presbyopia, cataracts, age related macular degeneration, primary open angle glaucoma and diabetic retinopathy. Untreated visual impairment leads to physical handicap, increased incidence of fall, depression, social isolation and dependency. Active screening for visual loss in the elderly should be part of the health examination. The elderly should be encouraged to come for formal 1-2 yearly eye assessment for early detection of visual impairment and to treat all associated problems in order to prevent permanent visual loss.

Matched MeSH terms: Vision Disorders/diagnosis; Vision Disorders/etiology*

Fulltext Prevalence of squints and visual defects in Malaysian primary one school children

Teoh GH, Yow CS

Med J Malaysia, 1982 Dec;37(4):336-7.

PMID: 7167085

Six hundred and fifty standard one school children in 3 Petaling Jaya schools were examined. 7.1 percent were found to have significant refractive errors and fourteen cases of squints were detected giving a prevalence of 2.2 percent. The majority of squints were of the divergent type. The prevalence and different patterns among the Malaysian and Caucasian populations are discussed.

Matched MeSH terms: Vision Disorders/epidemiology*

Fulltext An elderly lady with blurring of vision

Azhany Y, Nani D, Zunaina E

Malays Fam Physician, 2012;7(1):43-4.

PMID: 25606247 MyJurnal

Matched MeSH terms: Vision Disorders

Fulltext Understanding and preventing computer vision syndrome

Loh KY, Reddy SC

Malays Fam Physician, 2008;3(3):128-30.

PMID: 25606136 MyJurnal

The invention of computer and advancement in information technology has revolutionized and benefited the society but at the same time has caused symptoms related to its usage such as ocular sprain, irritation, redness, dryness, blurred vision and double vision. This cluster of symptoms is known as computer vision syndrome which is characterized by the visual symptoms which result from interaction with computer display or its environment. Three major mechanisms that lead to computer vision syndrome are extraocular mechanism, accommodative mechanism and ocular surface mechanism. The visual effects of the computer such as brightness, resolution, glare and quality all are known factors that contribute to computer vision syndrome. Prevention is the most important strategy in managing computer vision syndrome. Modification in the ergonomics of the working environment, patient education and proper eye care are crucial in managing computer vision syndrome.

Matched MeSH terms: Vision Disorders

Prevalence of visual disorders in Chinese schoolchildren

Chung KM, Mohidin N, Yeow PT, Tan LL, O'Leary D

Optom Vis Sci, 1996 Nov;73(11):695-700.

PMID: 8950751

We performed a vision screening of 1883 Chinese schoolchildren from 4 schools around Kuala Lumpur in June 1990. The group contained 1083-males and 800 females. Visual acuity, refractive error, oculomotor balance, and axial length were measured. The prevalence of myopia in Chinese schoolchildren was found to be 37% in the 6- to 12-year age group and 50% in the 13- to 18-year age group. Approximately 63% of the sample had unaided visual acuity of 6/6 or better and 24% had unaided acuity of 6/12 or worse. Six hundred twenty-five students (33%) failed the vision screening test and were referred for further examinations. The group which failed the vision screening test and had the highest rate of referral (46%) was the 11- to 12-year-old age group. The most common visual disorder was uncorrected myopia, accounting for 38% of the referrals (235 students). Only 26% of the sample were wearing a spectacle correction.

Matched MeSH terms: Vision Disorders/epidemiology*; Vision Disorders/physiopathology; Vision Disorders/prevention & control

Fulltext Multifacet of Cornea Patch Graft in Anterior Segment Diseases

Chendran P, Meng Hsien Y, Wan Abdul Halim WH

Case reports in ophthalmological medicine, 2019;2019:6862487.

PMID: 31885979 DOI: 10.1155/2019/6862487

Incidence of cornea melting or perforation is commonly seen in variety of cornea conditions. It can cause debilitating vision loss and impair patient's daily activity. Several techniques have been described to surgically treat cornea perforation and melting. In this article, a series of corneal diseases treated with corneal patch graft are highlighted to relate different approach of cornea patch graft surgery. Post-operative management and complications are discussed.

Matched MeSH terms: Vision Disorders

Comparison of Lea Symbols chart and Sheridan Gardiner chart in assessing vision screening among pre-school children: a Malaysia perspective

Omar R, Hussin DA, Knight VF

J Med Assoc Thai, 2012 Mar;95(3):412-7.

PMID: 22550841

Compare the performance of Lea Symbols and Sheridan Gardiner charts against the standard test chart used to determine reduced VA during vision screening among pre-schoolers.

Matched MeSH terms: Vision Disorders/diagnosis*

Fulltext Blindness and visual impairment amongst rural Malays in Kuala Selangor, Selangor

Zainal M, Masran L, Ropilah AR

Med J Malaysia, 1998 Mar;53(1):46-50.

PMID: 10968137

A population-based cross-sectional study was carried out to determine the prevalence of visual impairment and blindness and its causes amongst the adult rural Malay population in the district of Kuala Selangor, Selangor. By simple random sampling 330 samples were selected for the study. All samples underwent complete ophthalmological examination. The crude prevalence of visual impairment and blindness were 0.7% and 5.6% respectively. Age was the most important factor associated with the prevalence; gender, level of education and level of income was not significantly related. Cataract was the commonest cause of visual impairment and blindness while diabetic retinopathy was the second important cause.

Matched MeSH terms: Vision Disorders/epidemiology*

Assessment of Visual Acuity in Children Using Crowded Lea Symbol Charts

Sailoganathan A, Rou LX, Buja KA, Siderov J

Optom Vis Sci, 2018 08;95(8):643-647.

PMID: 30063661 DOI: 10.1097/OPX.0000000000001253

SIGNIFICANCE: Vision charts comprising single Lea symbols surrounded by either flanking bars or flanking Lea symbols are available for measurement of visual acuity in children. However, the results obtained with such charts may not be interchangeable owing to potential differences in the crowding effect.

PURPOSE: The purpose of this study was to compare habitual visual acuity in a sample of young children using two versions of the single Lea symbols charts with different crowding features.

METHODS: Monocular habitual visual acuity was measured in a sample of 77 young children aged between 4 and 6 years using crowded Lea symbols charts with either flanking bars separated from the central symbol by 0.5 optotype width or flanking Lea optotypes separated from the central symbol by 1.0 optotype width.

RESULTS: Mean visual acuity was higher (i.e., lower logarithm of the minimum angle of resolution) with the Lea symbols crowded using flanking optotypes, equivalent to about 1.5 optotype difference. Visual acuity measured with the two charts was significantly correlated; however, the 95% limits of agreement were larger than expected from repeatability studies using Lea symbols.

CONCLUSIONS: Lea symbols with flanking optotypes resulted in higher visual acuity than the Lea symbols with flanking bars, probably as a result of differences in the crowding effect. The two charts showed insufficient agreement, and we do not recommend their use interchangeably. We recommend using the Lea symbols with flanking bars because of the closer flanker-target separation.

Matched MeSH terms: Vision Disorders/diagnosis

Fulltext The screening of visual impairment among preschool children in an urban population in Malaysia; the Kuching pediatric eye study: a cross sectional study

Premsenthil M, Manju R, Thanaraj A, Rahman SA, Kah TA

BMC Ophthalmol, 2013;13:16.

PMID: 23601160 DOI: 10.1186/1471-2415-13-16

To screen for visual impairment in Malaysian preschool children.

Matched MeSH terms: Vision Disorders/diagnosis*; Vision Disorders/epidemiology; Vision Disorders/physiopathology

Fulltext Dengue fever presenting as bilateral dengue maculopathy

Umi Kalthum, M.N.

Medicine & Health, 2012;7(1):57-61.

MyJurnal

Dengue fever is a common pyrexial-viral infection in the Asian region and the incidence is increasing yearly. There are various ocular manifestations of dengue fever such as maculopathy, retinal hemorrhages, retinal lesions and vasculitis. Reduction in visual acuity and other visual disturbances such as metamorphopsia is the most common presentation of dengue-associated maculopathy. We report an interesting case of a young lady with bilateral maculopathy secondary to dengue fever who was managed conservatively with dramatic visual improvements. This case highlights the possibility of bilateral and simultaneous ocular involvements in patients infected with dengue fever. Both ophthalmologists and physicians need to be aware of ocular complications following dengue fever and advice patients regarding the symptoms.

Matched MeSH terms: Vision Disorders

Fulltext Chemotherapy related optic neuritis

Nur, A.S., Jemaima, C.H., Fuad Ismail, Safinaz, M.K.

International Medical Journal Malaysia, 2017;16(2):133-136.

MyJurnal

In children, most cases of optic neuritis are immune-related. Less frequently, it may also be due to
demyelinating disorders. Other secondary causes such as infection of adjacent structures or infiltration are
even rarer. The occurrence of optic neuritis in children on chemotherapy also has not being extensively
reported. We report a case of bilateral optic neuritis in a young girl with subacute visual loss after receiving
systemic chemotherapy for embryonal ovarian carcinoma.

Matched MeSH terms: Vision Disorders

Fulltext Recurrent transient visual loss in a middle aged woman

Chow SY, Draman N, Teh WM, Azhany Y

Malays Fam Physician, 2017;12(3):42-46.

PMID: 29527282 MyJurnal

Visual loss is a common presenting complaint in primary care. We present a case of recurrent transient visual loss in a middle aged woman. Her funduscopy showed bilateral optic disc swelling. We have highlighted the differentiation of bilateral optic disc swelling at the primary care level as the management differs according to the diagnosis.

Matched MeSH terms: Vision Disorders

The impact of sensory impairment on cognitive performance, quality of life, depression, and loneliness in older adults

Harithasan D, Mukari SZS, Ishak WS, Shahar S, Yeong WL

Int J Geriatr Psychiatry, 2020 04;35(4):358-364.

PMID: 31736109 DOI: 10.1002/gps.5237

OBJECTIVES: The objective of this study was to evaluate the relationship between sensory impairment (hearing loss only, vision loss only, and dual sensory impairment [DSI]) and depression, loneliness, quality of life, and cognitive performance in older adults.

METHODS: A total of 229 community-dwelling older adults aged 60 years or older participated in this study. Variables were measured using the Geriatric Depression Scale (GDS-15), Revised University of California at Los Angeles Loneliness Scale (R-UCLA), Satisfaction with Life Scale (SWLS), and Mini-Mental State Examination (MMSE).

RESULTS: There was an independent association between DSI and quality of life (P < .05) and between DSI and hearing loss alone and cognitive function (P < .05) in older adults. In addition, higher education was associated with better quality of life and cognitive function.

CONCLUSIONS: DSI is a significant factor affecting the quality of life and cognitive function in older adults. Sociodemographic factors such as education play an important role in improving quality of life and cognitive function. Thus, increasing the awareness of this disability is important to ensure that older adults receive the necessary support services and rehabilitation to improve their level of independence.

Matched MeSH terms: Vision Disorders/complications*; Vision Disorders/epidemiology; Vision Disorders/psychology

Fulltext A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

Aziz SB, Brza MA, Nofal MM, Abdulwahid RT, Hussen SA, Hussein AM, et al.

Materials (Basel), 2020 Aug 20;13(17).

PMID: 32825367 DOI: 10.3390/ma13173675

Polymer electrolytes and composites have prevailed in the high performance and mobile marketplace during recent years. Polymer-based solid electrolytes possess the benefits of low flammability, excellent flexibility, good thermal stability, as well as higher safety. Several researchers have paid attention to the optical properties of polymer electrolytes and their composites. In the present review paper, first, the characteristics, fundamentals, advantages and principles of various types of polymer electrolytes were discussed. Afterward, the characteristics and performance of various polymer hosts on the basis of specific essential and newly published works were described. New developments in various approaches to investigate the optical properties of polymer electrolytes were emphasized. The last part of the review devoted to the optical band gap study using two methods: Tauc's model and optical dielectric loss parameter. Based on recently published literature sufficient quantum mechanical backgrounds were provided to support the applicability of the optical dielectric loss parameter for the band gap study. In this review paper, it was demonstrated that both Tauc's model and optical dielectric loss should be studied to specify the type of electron transition and estimate the optical band gap accurately. Other parameters such as absorption coefficient, refractive index and optical dielectric constant were also explored.

Matched MeSH terms: Vision Disorders

Fulltext Home monitoring for glaucoma

Che Hamzah J, Daka Q, Azuara-Blanco A

Eye (Lond), 2020 01;34(1):155-160.

PMID: 31772381 DOI: 10.1038/s41433-019-0669-7

Glaucoma services are overwhelmed and struggling to accommodate current demand. Reducing the need for hospital based services would improve our ability to see those most at risk of vision loss, which could both reduce demand and improve patient outcomes. Digital technologies that provide opportunities for home monitoring of glaucoma progression have potential to contribute to solve these challenges and, potentially, improve glaucoma care. This article will review the literatures of well-established technologies that support home monitoring for glaucoma, specifically home tonometry (with rebound tonometry) and perimetry with Moorfields Motion Displacement Test and Melbourne Rapid Field.

Matched MeSH terms: Vision Disorders

Fulltext Colour vision deficiency among failed candidates for driving license in Sabah

Noraisyah Bt Azmi, Arifah Nur Binti Yahya, Hosana Christyon Sipon Gilong, Sit Jo Anne, Ruby Huong Yeng Ting, Nurul Hafizah Binti Amil Bangsa, et al.

Borneo Journal of Medical Sciences, 2020;3(101):11-12.

MyJurnal

Introduction: Good visual acuity (VA) coupled with the ability to discriminate colours and having a sufficiently wide field of view are factors needed for safe driving. This study aimed to determine the types of colour vision deficiency (CVD) among failed candidates for driving license and to identify the accuracy of the Road Transport Department (RTD) screening tests in detecting those who have poor VA and CVD in Sabah.

Matched MeSH terms: Vision Disorders

MRI of optic tract lesions: review and correlation with visual field defects

Fadzli F, Ramli N, Ramli NM

Clin Radiol, 2013 Oct;68(10):e538-51.

PMID: 23932674 DOI: 10.1016/j.crad.2013.05.104

Visual field defects are a conglomerate of patterns of visual impairment derived from diseases affecting the optic nerve as it extends from the globe to the visual cortex. They are complex signs requiring perimetry or visual confrontation for delineation and are associated with diverse aetiologies. This review considers the chiasmatic and post-chiasmatic causes of visual disturbances, with an emphasis on magnetic resonance imaging (MRI) techniques. Newer MRI sequences are considered, such as diffusion-tensor imaging. MRI images are correlated with perimetric findings in order to demonstrate localization of lesions in the visual pathway. This may serve as a valuable reference tool to clinicians and radiologists in the early diagnostic process of differentiating causes of various visual field defects in daily practice.

Matched MeSH terms: Vision Disorders/diagnosis; Vision Disorders/pathology

Fulltext Von Hippel angioma

Chong PK, Loo AV, Alagaratnam JV

Med J Malaysia, 2007 Oct;62(4):343-4.

PMID: 18551944 MyJurnal

We report a three year follow up of a 35-year-old Indian gentleman who presented with sudden, painless blurring of left (L) eye vision with initial visual acuity (VA) of 6/60. Fundoscopy revealed (L) vitreous haemorrhage and subsequently confirmed a (L) inferotemporal capillary haemangioma. The adjacent area of capillary haemangioma was treated with barricade argon laser photocoagulation to prevent progression of exudative retinal detachment inferiorly. Subsequent follow up showed mild regression of capillary haemangioma with maintenance of (L) eye vision at 6/9.

Matched MeSH terms: Vision Disorders/diagnosis*; Vision Disorders/physiopathology

Displaying publications 1 - 20 of 92 in total