Abstract
Data describing the radius of curvature of the anterior surface of the human lens have been re-examined for (i) far-accommodated lenses and (ii) near-accommodated or excised lenses. It is found that, with increasing age, the curvatures converge to an intermediate value. Taking this together with the body of work on the mechanics of accommodative lens changes, a perspective is suggested which affords a simple view of curvature changes with age. The only datum in the literature is found to fit reasonably well with this perspective.
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References
Donders FC . On the anomalies of accommodation and refraction of the eye, transi. Moore WD. London: The New Sydenham Society, 1864.
Weale R . New light on old eyes. Nature 1963;198:944–6.
Fisher RF . The elastic constants of the human lens. J Physiol (Lond) 1971;212:147–80.
Fisher RF . Elastic constants of the human lens capsule. J Physiol (Lond) 1969;201:1–19.
Finchman EF . The mechanism of accommodation. Br J Ophthalmol 1937;21(monogr suppl 8):1–80.
Bito LZ, Kaufman PL, Neider M, Miranda OE, Antal P . The dynamics of accommodation (ciliary muscle contraction, zonular relaxation and lenticular deformation) as a function of stimulus strength and age in iridectomized rhesus eyes. Invest Ophthalmol Visual Sci 1987;28 (Suppl):318–0.
Lütjen-Drecoll E, Tamm E, Kaufmann PL . Age changes in rhesus monkey ciliary muscle: light and electron microscopy. Exp Eye Res 1988;47:885–99.
Graebel WP, Alphen GWHM van . The elasticity of sclera and choroid of the human eye, and its implications on scleral rigidity and accommodation. J Biomech Eng 1977;99:203–8.
Wyatt HJ . Application of a simple mechanical model of accommodation to the aging eye. Vision Res 1993;33:731–8.
Alphen GWHM van . On emmetropia and ametropia. Ophthalmologia 1961;142:40–92.
Fisher RF . Presbyopia and the changes with age in the human crystalline lens. J Physiol (Lond) 1973;228:765–79.
Koretz JF, Handleman GH . Modeling age-related accommodative loss in the human eye. Mathematical Modelling 1986;7:1003–14.
Weale R . Presbyopia toward the end of the 20th century. Survey Ophthalmol 1989;14:15–30.
Helmholtz H von . Ueber die Accommodation des Auges. Graefes Arch Ophthalmol 1855;1:1–74.
Brown N . The change in shape and internal form of the lens of the eye on accommodation. Exp Eye Res 1973;15:441–59.
Brown N . The change in lens curvature with age. Exp Eye Res 1974;19:175–83.
Lowe RF, Clark BAJ . Radius of curvature of the anterior lens surface. Br J Ophthalmol 1973;57:471–4.
Howcroft MJ, Parker JA . Aspheric curvatures for the human lens. Vision Res 1977;17:1217–23.
Helmholtz H von . Handbook of physiological optics. 1866; 3rd ed. 1909; transi. Southall JPC, 1924; reprinted New York, Dover, 1962.
Fisher RF . The vitreous and lens in accommodation. Trans Ophthalmol Soc UK 1982;102:318–22.
Koretz JF, Handelman GH, Brown NP . Analysis of human crystalline lens curvature as a function of accommodative state and age. Vision Res 1984;24:1141–51.
Fisher RF, Pettet BE . Presbyopia and the water content of the human crystalline lens. J Physiol (Lond) 1974;234:443–7.
Heyningen R van . The human lens. III. Some observations of the postmortem lens. Exp Eye Res 1972;13:155–60.
Lahm D, Lee LK, Bettelheim FA . Age dependence of freezable and nonfreezable water content of normal human lenses. Invest Ophthalmol Visual Sci 1985;26:1162–5.
Francois J . Les cataractes congenitales. Bull Soc Fr Ophtalmol 1959;72:38–. (Repoduced in ref. 27.)
Weale R . A biography of the eye. London: HK Lewis, 1982.
Worgul BV . Lens. In: Jakobiec FA, editor. Ocular anatomy, embryology and teratology. Philadelphia: Harper & Row, 1982:355–89.
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Wyatt, H., Fisher, R. A simple view of age-related changes in the shape of the lens of the human eye. Eye 9, 772–775 (1995). https://doi.org/10.1038/eye.1995.193
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DOI: https://doi.org/10.1038/eye.1995.193