Zobrazeno 1 - 10
of 57
pro vyhledávání: '"John Siderov"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract The adverse impact of adjacent contours on letter visual acuity is known as crowding but there is conflicting evidence that foveal crowding may be reduced or disappears under low contrast conditions. Potential differences in foveal crowding
Externí odkaz:
https://doaj.org/article/180a4d51032446aaa65a7aace597b0b8
Publikováno v:
Indian Journal of Ophthalmology, Vol 66, Iss 5, Pp 634-640 (2018)
Purpose: The purpose of this study to develop and calibrate a new Hindi logarithm of the minimum angle of resolution (logMAR) visual acuity chart. Methods: A new Hindi visual acuity chart was designed to logMAR specifications using Hindi optotypes ex
Externí odkaz:
https://doaj.org/article/187fbacc09a54befac373360c55572eb
Publikováno v:
Indian Journal of Ophthalmology, Vol 61, Iss 10, Pp 557-561 (2013)
Aims: Gujarati is the main spoken language of a large proportion of the population of India. The aim of this study was to develop and validate a new Minimum Angle of Resolution (logMAR) visual acuity chart in the Gujarati language. Materials and Meth
Externí odkaz:
https://doaj.org/article/d8c469bd47fb4ac58727760be3bb0b7f
Autor:
Robin Clayton, John Siderov
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 42(6)
Stereoacuity, like many forms of hyperacuity, improves with practice. We investigated the effects of repeated measurements over multiple visits on stereoacuity using two commonly utilised clinical stereotests, for both crossed and uncrossed disparity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b6e9cf121542551ecd09f7639821331
https://pubmed.ncbi.nlm.nih.gov/35997266
https://pubmed.ncbi.nlm.nih.gov/35997266
Publikováno v:
Vision Research. 179:9-18
Nearby flanking objects degrade visual resolution. If the flankers are similar to the acuity target, this influence is called crowding (CW), whereas if the flanking stimuli are simple bars then the phenomenon is known as contour interaction (CI). The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3842b0234a51c1de097ffea3dd988aee
https://doi.org/10.1016/j.visres.2020.11.002
https://doi.org/10.1016/j.visres.2020.11.002
Publikováno v:
Clinical and Experimental Optometry. 104:95-100
Midwives should receive appropriate training to enable them to reliably detect an abnormality in the red reflex, so as to detect potentially sight- (and possibly life-) threatening visual anomalies in newborns.Midwives who had completed the relevant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60c9862db1d8b8b5d54b293dbaf2af28
https://doi.org/10.1111/cxo.13147
https://doi.org/10.1111/cxo.13147
Publikováno v:
Vision Research. 167:1-7
Nearby flanking bars degrade letter identification and resolution, a phenomenon known as contour interaction. However, many previous studies found that the relationship between foveal letter identification and flanker separation is non-monotonic, wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96e3b6a019278cbeaef2341c00dca824
https://doi.org/10.1016/j.visres.2019.12.003
https://doi.org/10.1016/j.visres.2019.12.003
Publikováno v:
Optometry and Vision Science. 96:940-947
SIGNIFICANCE Contour interaction describes an impairment of visual acuity produced by nearby flanking features, which exerts a significant impact in many clinical tests of visual acuity. Our results indicate that the magnitude of interaction depends
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b037a0c28dab10f0357e09d623a7522
https://doi.org/10.1097/opx.0000000000001457
https://doi.org/10.1097/opx.0000000000001457
Publikováno v:
Optometry and vision science : official publication of the American Academy of Optometry. 97(12)
SIGNIFICANCE Both foveal and peripheral contour interactions are based on, as yet, unexplained neural mechanisms. Our results show that, unlike foveal contour interaction, peripheral contour interaction cannot be explained on the basis of the antagon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52c0e6f588550dd3bf37f3991cd9290e
https://pubmed.ncbi.nlm.nih.gov/33252543
https://pubmed.ncbi.nlm.nih.gov/33252543
Autor:
John Siderov, František Pluháček
Purpose: The decrease in visual acuity under low luminance conditions is well known. Recent laboratory evidence showed that crowding under low luminance (mesopic) light levels is less robust than under photopic conditions. The present study examines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d2d944d013b6e0de05edcf46095ada3
https://arro.anglia.ac.uk/id/eprint/702957/3/Siderov_2018.docx
https://arro.anglia.ac.uk/id/eprint/702957/3/Siderov_2018.docx
