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Query: UMLS:C0038379 (strabismus)
 9,317 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The paper represents one study effected at a number of two hundred and fifty children under three years old, examinated in Ophthalmological Clinic between 1992 and 1995. It was examinated strabismic deviation, visual acuity, state of binocular-eyesight refraction. Most of children (59%) present to hypermetropia under three dioptry; 23.3% medium hypermetropia (3-6 dioptries). Little percentage under 10% present others refraction vices: big hypermetropia, astigmatism, anisometropia, myopia. After optic correction and occlusion, most of deviations remained unaltered requiring surgical subsequent correction. This fact certifys the preponderence of neurogenic pathogenesis and not adjustment in strabismus with precocious debut.
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PMID:[The incidence of refractive errors in strabismus with an early onset]. 871 84

Two infant vision screening programmes on total populations in the Cambridge Health District have been designed to identify manifest strabismus and strabismogenic and amblyogenic refractive errors at 7-9 months of age. The first, completed, programme used the isotropic photorefractor with cycloplegia together with a standard orthoptic examination. The second, current, programme uses the VRP-1 isotropic videorefractor to identify infants with accommodative lags which are followed up by refraction under cycloplegia. Both programmes show good agreement between infants identified at screening and retinoscopic refractions at follow-up, showing that photo- and videorefraction (with or without cycloplegia) can be effective methods for screening for ametropia in infants and young children. In each programme 5-6% of infants showed abnormal levels of hyperopia (> or = 3.5 D in any meridian), less than 1% showed anisometropia > or = 1.5 D; very few infants (0.25%) showed -3D myopia or greater. Less than 1% showed manifest strabismus. Hyperopic and anisometropic children entered a randomised controlled trial of partial refractive correction. All children identified at screening, alongside appropriate control groups, are extensively followed up to age 4 years. The first programme has found that children who were hyperopic in infancy were 13 times more likely to become strabismic, and 6 times more likely to show measurable acuity deficits by 4 years, compared with controls. Wearing a partial spectacle correction reduced these risk ratios to 4:1 and 2.5:1 respectively. The impaired acuity can be attributed, in part, to meridional amblyopia resulting from persisting astigmatism. Both hyperopic and myopic infants showed refractive changes in the direction of emmetropia between 9 months and 4 years. Wearing a partial spectacle correction did not affect this process of emmetropisation, but does provide the possibility of reducing the incidence of common pre-school vision problems.
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PMID:Two infant vision screening programmes: prediction and prevention of strabismus and amblyopia from photo- and videorefractive screening. 877 48

In this retrospective study we analysed the prevalence of retino-pathy of prematurity (ROP) and its sequelae in a sample of premature infants with birth weight less than 1500 grams. From 1 January 1990 to 31 October 1993, we studied 160 surviving premature infants with very low birth weight (< 1.500 g) referred to the Neonatal Intensive Care Unit of the I.R.C.C.S. Policlinico San Matteo, Pavia, Italy. Thirty percent of these infants suffered from ROP, and 13.7%, with severe ROP, underwent cryotherapy. These latter had very-very low birth weight (< 1.000 g) and low gestational age (< 28 weeks). Follow-up of 69 infants at 12 months for retinal sequelae, refraction defects, bin-ocular vision and ocular motility impairments gave the following results: 1) strabismus 20.3%; 2) > 3D hyperopia 3%; 3) myopia 30.4%; 4) > 5D myopia 3.7%. The incidence of refraction and ocular motility anomalies in patients with acute ROP with spontaneous remission was similar to that of unaffected premature infants. Conversely, in the patients treated with cryotherapy the incidence of strabismus and > 5D myopia was greater than for untreated infants: 30% vs 15.4% (n.s.) and 14.7% vs 0% (p = 0.05), respectively. Cryotherapy was successful in 91.9% of cases and in 37.8% of cases the cicatricial sequelae were limited to peripheral chorioretinal scars.
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PMID:Review of experience with retinopathy of prematurity from the Pavia registry (1990-1993). 882 95

In the nordic countries 2 to 4% of the population squint and 3 to 5% develop amblyopia. Identification of these children can be done through a general visual screening at a proper age or by selective screening of high risk groups. Several risk factors can be identified: heredity, failure to emmetropize and high hyperopia at the age of 1 year.
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PMID:[Can we identify risk groups for the development of amblyopia and strabismus?]. 883 41

Visual acuity, refractive error, and binocular status were determined in 43 autosomal recessive (AR) and 15 X-linked (XL) congenital achromats. The achromats were classified by color matching and spectral sensitivity data. Large interindividual variation in refractive error and visual acuity was present within each achromat group (complete AR, incomplete AR, and XL). However, the number of individuals with significant interocular acuity differences is very small. Most XLs are myopic; ARs show a wide range of refractive error from high myopia to high hyperopia. Acuity of the AR and XL groups was very similar. With-the-rule astigmatism of large amount is very common in achromats, particularly ARs. There is a close association between strabismus and interocular acuity differences in the ARs, with the fixating eye having better than average acuity. The large overlap of acuity and refractive error of XL and AR achromats suggests that these measures are less useful for differential diagnosis than generally indicated by the clinical literature.
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PMID:Clinical vision characteristics of the congenital achromatopsias. I. Visual acuity, refractive error, and binocular status. 884 24

This study compared the sensory status of 23 patients (19 children and 4 adults) before and after treatment with total hypermetropic correction. We have shown that binocular improvement can be obtained in every category of strabismological pathology, including exotropia, with the exception of early onset micro-strabismus. Three cases of late onset micro-strabismus (one divergent and two convergent) where total sensory cure was obtained are also described. We confirm the slow clinical progression of hypermetropia in the strabismic patient provided with total optical correction. The two examples reported, as well as our cursory review of recent literature, provide justification for the early, systematic prescription of total optical correction for strongly hypermetropic children (> 4 D).
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PMID:[Benefits of total hypermetropia correction in patients with strabismus]. 898 31

The purpose of this study was to evaluate the Swedish screening criteria for referral of children to ophthalmic care after visual acuity testing at the age of 4 years. The screening limit has generally been 0.8. To what extent do children with 0.65 in each eye (0.65/0.65) or 0.65 in one and 0.8 in the other (0.65/0.8) at the age of 4 years have visual defects needing early treatment? Sixty-three children who had failed screening underwent orthoptic and ophthalmologic evaluation. Twenty-four patients (38%) saw 0.65/0.65 or 0.65/0.8 and were studied further. None of them had manifest strabismus. Refractive errors were minor except in 2 patients who had significant hyperopia. Twenty-two of these 24 patients returned for reevaluation at the age of five years and that time 18 of them saw 0.8 or more without treatment. Our findings suggest that children with visual acuity of no less than 0.65 and no more than one line's difference between the eyes at 4 years of age seldom have visual defects needing treatment.
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PMID:Do we have optimal screening limits in Sweden for vision testing at the age of 4 years? 901 68

This study was done to determine the prevalence of visual impairment due to refractive errors and ocular diseases in lower middle class school children of Hyderabad, India. A total of 4,029 children, which included 2,348 males and 1,681 females, in the age range of 3 to 18 years from 9 schools were screened with a detailed ocular examination protocol. Among 3,669 children in whom visual acuity could be recorded, on presentation 115 (3.1%) had visual acuity < 6/18 in the better eye (equivalent to visual impairment), while 41 (1.1%) had visual acuity < or = 6/60 [corrected] in the better eye (equivalent to legal blindness) out of which 18 (0.5%) had visual acuity < 6/60 in the better eye (equivalent to economic blindness). Of 115 children who presented with initial visual acuity < 6/18, vision improved to > or = 6/18 with refraction in 109 (94.8%). No child was legally or economically blind after refractive correction. Prevalence of hyperopia was 22.6%, myopia 8.6% and astigmatism 10.3%. The prevalence of myopia was significantly higher among children > or = 10 years of age (P < 0.001). The maximum, mean and median values for myopia were 10.00, 1.35 and 0.75 D in the better eye. For hyperopia these values were 8.50, 0.65 and 0.50 D. The major causes for best corrected visual acuity < 6/9 in the worse eye for 51 (1.4%) children included amblyopia in 40 (1.1%), corneal diseases in 5 (0.1%), cataract in 2 (0.05%) and others in 4 (0.1%). Out of the total, 30 (0.7%) children had strabismus. These data support the assumption that vision screening of school children in developing countries could be useful in detecting correctable causes of decreased vision, especially refractive errors, and in minimising long term permanent visual disability.
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PMID:Visual impairment in school children in southern India. 947 34

How and why to prescribe an optical correction in hyperopia is described. The reasons for prescribing are closely related to the visual risk of not doing so (amblyopia, lack of stereopsy, strabismus), to the patient's complains and history as well as to his ophthalmological examination. How to correct hyperopia depends on the presence or absence of squint and on the amount of ametropia.
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PMID:[Why and how to correct hypermetropia?]. 949 Jan 55

Aarskog syndrome is characterised by a disproportionately short stature and facial, skeletal and urogenital anomalies ('shawl' scrotum and cryptorchidism). Ophthalmic findings include a slight downward slant to the palpebral fissures, hypertelorism, blepharoptosis, strabismus, ophthalmoplegia, hypermetropic astigmatism and a large cornea. Findings on the extremities include joint hyperextensibility, short and broad hands, interdigital webbing, a short fifth finger, clinodactyly and broad feet with bulbous toes. We report on a 7 1/2-year-old boy with typical findings of Aarskog syndrome, hypermetropia and bilateral proximal implantation of the fifth toes. These associated abnormalities have hitherto never been described, to our knowledge.
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PMID:Aarskog syndrome associated with hypermetropia and toe anomaly. 949 38


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