scholarly journals Sharing Displays and Data from Vision Science Research with Databrary

2015 ◽  
Vol 15 (12) ◽  
pp. 280
Author(s):  
Rick Gilmore ◽  
Karen Adolph ◽  
David Millman ◽  
Lisa Steiger ◽  
Dylan Simon
Keyword(s):  
Science Research ◽  
Vision Science

Ophthalmology and vision science research

2005 ◽  
Vol 31 (12) ◽  
pp. 2413-2419 ◽  
Author(s):  
Charles N.J. McGhee ◽  
Amardeep K. Gilhotra
Keyword(s):  
Science Research ◽  
Vision Science

Ophthalmology and vision science research

2005 ◽  
Vol 31 (11) ◽  
pp. 2205-2211 ◽  
Author(s):  
Charles N.J. McGhee ◽  
Amardeep K. Gilhotra
Keyword(s):  
Science Research ◽  
Vision Science

scholarly journals Comparative morphological evaluation of animal corneal parameters

2018 ◽  
Vol 74 (1) ◽  
pp. 6010-2018
Author(s):  
VIDA BABRAUSKIENĖ ◽  
JUDITA ŽYMANTIENĖ ◽  
ALBINA ANIULIENĖ ◽  
VIDA JUOZAITIENĖ ◽  
SNIEGUOLĖ MALAKAUSKIENĖ ◽  
...  
Keyword(s):  
Corneal Thickness ◽  
Science Research ◽  
Significant Negative Correlation ◽  
Morphometric Parameters ◽  
Basic Knowledge ◽  
Total Thickness ◽  
Vision Science ◽  
Morphological Evaluation ◽  
Axis Length ◽  
Substantia Propria

The purpose of this study was to broaden the basic knowledge of corneal morphological structures in pigs, cows and rabbits and to find morphological and histological differences in the constituent corneal structures. After slaughter, corneal samples of 24 animals, including cows, pigs and rabbits, were investigated. Forty-eight eyeballs (n=48) of 8 pigs, 8 cows and 8 rabbits were used for this study. Central corneal thickness (CCT) values in cows were higher than those in pigs (P < 0.001) and rabbits. In rabbits, CCT, as a percentage of the eye axis length, was 55.03% greater than in cows and 40.55% greater than in pigs (P<0.001). The thickness of substantia propria (stroma) depended on the species and accounted for more than 80% of the thickness of all layers of the cornea. The thickness of the anterior epithelium amounted to 15.81% of the thickness of all layers of the cornea in cows, 11.79% in pigs, and 8.48% in rabbits (P<0.001). The data analysis showed that the caudal limiting membrane + endothelium was the thinnest layer of the cornea, with thickness ranging from 0.88% to 2.40% of the total thickness of all layers of the cornea in the three species under study (P<0.001). A statistically significant negative correlation was determined between the anterior epithelium and substantia propria in corneas of cows, pigs and rabbits (P<0.001). This paper describes the morphometric parameters of the cornea in pigs, cows and rabbits. These parameters will be of use to scientists using animal models in vision science research. .

scholarly journals How Contact Lenses Have Influenced Research Developments in Optics and Vision Science

2021 ◽  
Vol 52 (2) ◽  
pp. 27-33
Author(s):  
Ian Cox, PhD ◽  
Pete Kollbaum, OD, PhD ◽  
Eric Papas, PhD
Keyword(s):  
Contact Lenses ◽  
Science Research ◽  
Early Years ◽  
Visual Axis ◽  
Corneal Surface ◽  
Wavefront Aberrations ◽  
Vision Science ◽  
Multifocal Lens

Initially, contact lenses were developed as the only viable option to provide improved vision for patients suffering from conditions which distortedthe corneal surface in an irregular fashion, rendering spectacle correction an unsatisfactory option. Developments in materials, fitting methods andmanufacturing technologies soon made contact lenses an appealing option for all spectacle wearers, particularly with the development of toricand multifocal lens options. Although the optical challenges of contact lenses appeared to be relatively straightforward in their early years, thedevelopment of improved in-vivo diagnostic and in-vitro metrology instrumentation led to a significantly greater understanding of the nature of theoptical errors (e.g. higher order wavefront aberrations) of the eye and contact lenses and the interactions between them when worn. The featuresof contact lenses having extremely steep curvatures and being aligned closely to the eye’s visual axis in all positions of gaze provide both uniquechallenges and opportunities for improving the visual performance of both physiological and pathological eyes, and have guided the efforts ofsignificant vison science research in more recent times.

Ophthalmology and vision science research

2005 ◽  
Vol 31 (10) ◽  
pp. 1999-2007 ◽  
Author(s):  
Victoria A. Cartwright ◽  
Charles N.J. McGhee
Keyword(s):  
Science Research ◽  
Vision Science

The Role of Suppression in Amblyopia: A Literature Review

2016 ◽  
pp. 54-67
Keyword(s):  
Visual Acuity ◽  
Literature Review ◽  
Science Research ◽  
Adult Brain ◽  
Vision Disorder ◽  
Vision Science ◽  
Long Term Stability ◽  
Occlusion Therapy ◽  
Length Of Treatment

Amblyopia is a developmental vision disorder typically treated by occlusion therapy. Recent research suggests suppression is closely linked to deficits in visual acuity and stereopsis, and considerations regarding treatment should include reducing interocular suppression. The aim of this literature review is to provide an analysis of vision science research published within the past 5 years which investigates the role of suppression in amblyopia and discuss the implications to clinical practice. Recent research suggests binocular cells are present in the visual cortex of amblyopes, but are rendered functionally monocular by the development of a GABA inhibitory network. Suppression, or inhibition, can be quantified in both strabismic and anisometropic amblyopia by reducing contrast to the fixating eye until simultaneous perception occurs. In both strabismic and anisometropic amblyopes, higher levels of suppression are associated with lower visual acuities and absent stereopsis. In addition, the evaluation and treatment of suppression is important for the effective treatment of amblyopia, particularly in patients with deep suppression, as they may not respond as well to occlusion therapy. Variable contrast anti-suppression training improves visual acuity, reduces suppression, and improves stereopsis in both children and adults. No age trends were found, which suggests that significant neuroplasticity exists in the adult brain, and suppression may not need to be treated differently in children and adults. Incorporating variable contrast into anti-suppression therapy techniques may enhance treatment progress and promote the development of stereopsis. Existing optometric vision therapy techniques already used to treat suppression are described. Additionally, some of the computer-based tools possess variable contrast stimuli presentation capabilities. Further research is needed to evaluate the optimal length of treatment and long term stability of gains in visual acuity and stereopsis using this treatment strategy.

Ophthalmology and vision science research

2006 ◽  
Vol 32 (1) ◽  
pp. 151-157 ◽  
Author(s):  
Amardeep K. Gilhotra ◽  
Charles N.J. McGhee
Keyword(s):  
Science Research ◽  
Vision Science
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