Visual influences on diurnal rhythms in ocular length and choroidal thickness in chick eyes

Experimental Eye Research
Debora L NicklaJ Wallman

Abstract

Recent investigations have raised the possibility that ocular diurnal rhythms might be involved in the regulation of eye growth. Specifically, the chick eye elongates with a daily rhythm, said to be absent in form-deprived eyes. The present study asks: (1) Which components of the eye have daily rhythms-only the overall eye size, or also choroidal thickness or anterior chamber depth? (2) Does the phase or amplitude of these rhythms differ in eyes growing either faster than normal (form-deprived eyes) or slower than normal (eyes recovering from form-deprivation myopia)? Using high-frequency A-scan ultrasonography that allowed fine (8-20 micron) resolution of anterior chamber depth, vitreous chamber depth, choroidal thickness and axial length, we measured normal eyes, form-deprived eyes and eyes recovering from form-deprivation myopia at 6 hour intervals for 5 days and 4 nights. All eyes showed daily rhythms in axial elongation and choroidal thickness. In both normal and form-deprived eyes, the axial length was greatest in the afternoon when the choroid was thinnest, and hence, these rhythms were approximately in anti-phase to one another; in addition, there is some evidence that the axial length rhythm in form-deprived eyes is ph...Continue Reading

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Citations

Oct 27, 2005·Investigative Ophthalmology & Visual Science·Kirstan A VesseyWilliam K Stell
Sep 16, 2008·Investigative Ophthalmology & Visual Science·Xiaoying Zhu, Josh Wallman
Aug 23, 2008·Investigative Ophthalmology & Visual Science·Likun AiChristine F Wildsoet
Mar 16, 2013·Investigative Ophthalmology & Visual Science·Xiaoying ZhuJosh Wallman
Nov 7, 2008·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Carlos Gustavo Vasconcelos De MoraesRemo Susanna
Jan 22, 2003·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Katrina L SchmidChristine F Wildsoet
Sep 29, 2011·Current Eye Research·Kenneth HeadingtonNathan Doble
Jan 16, 2016·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Debora L Nickla, Kristen Totonelly
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Sep 14, 2012·Experimental Eye Research·Ranjay ChakrabortyMichael J Collins
Jul 10, 2012·Progress in Retinal and Eye Research·D I Flitcroft
Aug 30, 2011·Experimental Eye Research·Debora L Nickla, Kristen Totonelly
Jan 14, 2010·Journal of Neuroscience Methods·Jeffrey WisardJohn M Nickerson
Jan 2, 2010·Progress in Retinal and Eye Research·Debora L Nickla, Josh Wallman
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Mar 31, 2011·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Jeremy A GuggenheimPaul M Hocking
May 15, 2013·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Debora L NicklaJosh Wallman
May 15, 2013·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·David S HammondChristine F Wildsoet
May 15, 2013·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Amelia J LeottaSally A McFadden
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Jun 27, 2006·Experimental Eye Research·Sally A McFaddenJosh Wallman
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Jan 15, 2013·Experimental Eye Research·Richard A StoneTejvir S Khurana
Feb 26, 2013·Experimental Eye Research·Marita Feldkaemper, Frank Schaeffel
Mar 9, 2013·Experimental Eye Research·Xiaoying Zhu
Jun 15, 2015·Experimental Eye Research·Ranjay ChakrabortyMachelle T Pardue
Jun 28, 2000·Experimental Eye Research·K PendrakR A Stone

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