[Study on Clear Optic Evaluation Method of Intraocular Lenses]
Qin Feng1, Qi Hao1, Qionghui Chen1
1Zhejiang Institute of Medical Device Testing, Hangzhou, 310019.
Summary
This study compared two methods for measuring intraocular lens clear optic diameter. Profile projector measurement is best for mass production, while Schlieren technique aids product development.
Area of Science:
- Ophthalmic optics
- Optical engineering
- Metrology
Background:
- Accurate measurement of intraocular lens (IOL) clear optic diameter is crucial for optical performance.
- Understanding design principles and influencing factors is key to precise IOL metrology.
Purpose of the Study:
- To explore and compare methods for determining the clear optic diameter of intraocular lenses.
- To evaluate the suitability of different measurement techniques for IOL manufacturing and development.
Main Methods:
- Analysis of IOL design principles and factors affecting clear optic size.
- Measurement and comparison of clear optic diameters for IOLs ranging from -10.0 D to 36.0 D using two distinct methods.
Main Results:
- Both measurement methods demonstrated good consistency for clear optic diameter determination.
- Profile projector measurement is more practical for routine mass production due to accuracy and convenience.
- Schlieren technique offers valuable insights during product development and feature description, serving as an auxiliary verification tool.
Conclusions:
- The profile projector method is recommended for conventional mass production testing of IOL clear optic diameters.
- The Schlieren technique is a valuable auxiliary method for IOL product development and verification.
- Both methods are reliable, but their application should be tailored to specific stages of IOL manufacturing and design.
