What is the purpose of the yellow filter?

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The built-in yellow filter enhances fluorescein staining visibility by:

Increasing contrast of corneal staining patterns
Reducing background light interference
Improving tear film break-up time (TBUT) observation
Supporting contact lens fitting assessments

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VisuScience Meditech co.,Ltd.
Add: Room 501, Ruiyun 5 No, 99 Furongzhongsan Rd.
Wuxi 214192, Jiangsu Province, China
Tel +86-0510-85757880
E-mail: info@visuscience.com