Purpose: To analyse the natural course of visual acuity in subjects affected by cerebral palsy.
Methods: During the past 5 years, 16 children underwent repeated grating acuity measurements using the acuity card procedure. At the end of the follow-up final grating acuity was compared with linear acuity obtained using standard optotypes.
Results: A good or moderate improvement in grating acuity was shown by 14 subjects. However, the general development of grating acuity showed a protracted course and early values did not correlate with final grating acuity (r = 0.20). Moreover, most of the children showed subnormal vision when measured with standard optotypes.
Conclusion: Clinicians should remain optimistic about the potential for some visual development in children affected by cerebral palsy. However, great caution should be exercised in extrapolating information from early grating acuity measurements. Regular assessments with the acuity card procedure are necessary in order to gain an insight into the natural course of visual development in children affected by cerebral palsy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/eye.1998.218 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reference values for the Teller Acuity Cards II (TAC II) in infants and preverbal children, a meta-analysis.
Acta Ophthalmol
January 2025
Bartiméus Diagnostic Center for Complex Visual Disorders, Zeist, The Netherlands.
Purpose: The Teller Acuity Card (TAC) procedure is a preferential-looking method to assess visual acuity in infants and preverbal children and provides a quantitative measure of grating acuity. Several studies containing reference values have been published, the majority based on an older version of the TAC card set. In 2003, a new version of the TAC was released, called the TAC II.
View Article and Find Full Text PDFMeridional anisotropy in contrast sensitivity and visual evoked potential in adults with high myopic astigmatism.
Front Neurosci
January 2025
School of Optometry, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China.
Purpose: Astigmatism can lead to meridional amblyopia, an orientation-specific visual deficit. This study investigated the effects of astigmatism on meridional anisotropy in contrast sensitivity (CS) and steady-state visual evoked potential (ssVEP) across a range of spatial frequencies.
Methods: Thirty-two young adults with a best-corrected distance visual acuity of logMAR 0 or better were categorized into two groups: highly astigmatic (HAS, = 16) with spherical-equivalent error (SE) ≥ -6.
Chilean brush-tailed mouse (): a diurnal precocial rodent as a new model to study visual receptive field properties of superior colliculus neurons.
J Neurophysiol
February 2025
Department of Biology, University of Massachusetts-Amherst, Amherst, Massachusetts, United States.
Lab rodent species commonly used to study the visual system and its development (hamsters, rats, and mice) are crepuscular/nocturnal, altricial, and possess simpler visual systems than carnivores and primates. To widen the spectra of studied species, here we introduce an alternative model, the Chilean degu (). This diurnal, precocial Caviomorph rodent has a cone-enriched, well-structured retina, and well-developed central visual projections.
View Article and Find Full Text PDFEffect of astigmatism and spherical equivalent correction on contrast sensitivity.
Int J Ophthalmol
December 2024
Department of Optometry, School of Rehabilitation, Shahid Beheshti University of Medical Sciences, Tehran 1616913111, Iran.
Aim: To investigate the effect of astigmatism and spherical equivalent (SE) correction on contrast sensitivity (CS).
Methods: In this cross-sectional study, 103 visually normal subjects aged 18 to 36y with bilateral regular astigmatism in range of 1.00 diopter cylinder (DC) to 4.
Exploring the Phenotype and Possible Mechanisms of Palinopsia in Visual Snow Syndrome.
Invest Ophthalmol Vis Sci
October 2024
Department of Optometry and Vision Sciences, University of Melbourne, Parkville, Australia.
Purpose: Palinopsia (persistent afterimages and/or trailing) is a common but poorly understood symptom of the neurological condition visual snow syndrome. This study aimed to collect a phenotypical description of palinopsia in visual snow syndrome and probe for abnormalities in temporal visual processing, hypothesizing that palinopsia could arise from increased visibility of normal afterimage signals or prolonged visible persistence.
Methods: Thirty controls and 31 participants with visual snow syndrome (18 with migraine) took part.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!