Abstract:
:The aim of the study was to determine the age-dependence of the accommodative force on the lens in order to make it clear whether the causes of presbyopia are due to lenticular or extralenticular changes. A finite element model of the lens of an 11-, 29- and 45-year-old human eye was constructed to represent the fully accommodated state. Subsequently, the force that was needed to mould the lens into its unaccommodated state was calculated. The force on the lens appeared to be preserved with age, with only a slight increase to a value of approximately 0.06N. In conclusion, the preservation of the net force delivered by the extralenticular ciliary body indicates that the causes of presbyopia must be ascribed to lenticular changes.
journal_name
Vision Resjournal_title
Vision researchauthors
Hermans EA,Dubbelman M,van der Heijde GL,Heethaar RMdoi
10.1016/j.visres.2007.10.017subject
Has Abstractpub_date
2008-01-01 00:00:00pages
119-26issue
1eissn
0042-6989issn
1878-5646pii
S0042-6989(07)00479-8journal_volume
48pub_type
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