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Comment
. 2020 Jun 3;61(6):34.
doi: 10.1167/iovs.61.6.34.

Intralenticular Hydrostatic Pressure Increases During Ciliary Muscle Contraction: A Finding Consistent With the Schachar Mechanism of Accommodation

Ronald A Schachar  1 , Ira H Schachar  2
Affiliations
Comment

Intralenticular Hydrostatic Pressure Increases During Ciliary Muscle Contraction: A Finding Consistent With the Schachar Mechanism of Accommodation

Ronald A Schachar et al. Invest Ophthalmol Vis Sci. .
No abstract available

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Conflict of interest statement

Disclosure: R.A. Schachar, None; I.H. Schachar, None

Figures

Figure.
Figure.
Reproduced from Chen et al. Figs. 1F and 1G. Because the sclera does not significantly change during ciliary muscle contraction, Fig. 1G is shifted down to align the sclera of the two images. Annotations and arrows have been added. The valleys between the ciliary processes are deeper and the distance between lens equator and sclera is decreased following pilocarpine induced ciliary muscle contraction (F), compared to tropicamide induced ciliary muscle relaxation, where the valleys of the ciliary processes are shallow and the distance between the lens equator and sclera is increased (G).
See this image and copyright information in PMC

Comment on

References

    1. Chen Y, Gao J, Li L, et al. .. The ciliary muscle and zonules of Zinn modulate lens intracellular hydrostatic pressure through transient receptor potential vanilloid channels. Invest Ophthalmol Vis Sci. 2019; 60: 4416–4424. - PMC - PubMed
    1. Schachar RA. The Mechanism of Accommodation and Presbyopia. Amsterdam, The Netherlands: Kugler Publications; 2012: 21–50.
    1. Schachar RA, Koivula A. The stress on the anterior lens surface during human in vivo accommodation. Br J Ophthalmol. 2008; 92: 348–350. - PubMed
    1. Schachar RA, Tello C, Cudmore DP, Liebmann JM, Black TD, Ritch R. In vivo increase of the human lens equatorial diameter during accommodation. Am J Physiol. 1996; 271(3 Pt 2): R670–R676. - PubMed
    1. Schachar RA, Anderson DA. The mechanism of ciliary muscle function. Ann Ophthalmol. 1995; 27: 126–132.

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