Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (21): 3843-3846.doi: 10.3969/j.issn.1673-8225.2010.21.010

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Changes of pseudophakic accommodation produced by different types of intraocular lenses movement

Nan Li1, Tang Xin1, Liu Yong-ji2, Li Li-hua1   

  1. 1 Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Hospital, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin  300020, China; 2 Institute of Modern Optics, Nankai University, Tianjin  300071, China
  • Online:2010-05-21 Published:2010-05-21
  • Contact: Tang Xin, Doctor, Doctoral supervisor, Chief physician, Key Laboratory of Ophthalmology and Visual Science, Tianjin Eye Hospital, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300020, China tangprof@yahoo.com.cn
  • About author:Nan Li☆, Studying for doctorate, Attending physician, Key Laboratory of Ophthalmology and Visual Science， Tianjin Eye Hospital, Clinical College of Ophthalmology, Tianjin Medical University, Tianjin 300020, China nanli73@yahoo.com
  • Supported by:

    the Science and Technology Tackle Program of Health Bureau of Tianjin

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Abstract:

BACKGROUND: Intraocular lens (IOL) made from different materials and optical designs have different optical characteristics. It is hard to clinically analyze the amount of pseudophakic accommodation caused by IOL movement inside of the eye.  
OBJECTIVE: To study pseudophakic accommodation induced by intraocular movement of different types of intraocular lenses.
METHODS: By using Zemax optical design program, the Liou-Brennan eye model implanted with different types of IOL was constructed. Ray-tracing method was adopted to calculate pseudophakic accommodation induced by IOL forward movements.
RESULTS AND CONCLUSION: The pseudophakic accommodation was increased with IOL forward movement. IOL made from acrylic and polymethylmethacrylate induced similar rate of pseudophakic accommodation. It was not significantly different between IOL with optical design of convex-plano and equal-convex as well. Slight higher pseudophakic accommodation caused by spherical IOL forward movement than aspheric IOL. The type of IOLs did not have significant effect on pseudophakic accommodation.

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