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Related Experiment Videos

The blue field entoptic test with normal patients.

J W Potter, L C Norden

    Journal of the American Optometric Association
    |December 1, 1983
    PubMed
    Summary

    Most patients can see their leukocytes using the Blue Field Entoptoscope (BFE). However, older individuals often struggle to perceive leukocytes equally across all quadrants, suggesting age-based standardization for BFE use.

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    Area of Science:

    • Ophthalmology
    • Physiology

    Background:

    • The Blue Field Entoptoscope (BFE) is a tool used to visualize leukocytes.
    • Understanding leukocyte perception is crucial for potential clinical applications.

    Purpose of the Study:

    • To evaluate the ability of normal patients to perceive their own leukocytes using the Blue Field Entoptoscope.
    • To identify factors, such as age, that may influence leukocyte perception.

    Main Methods:

    • One hundred normal patients were tested with the Blue Field Entoptoscope.
    • Patients were assessed on their ability to describe and perceive leukocytes in four quadrants of the visual field without coaching.

    Main Results:

    • Ninety-nine out of 100 patients could perceive their leukocytes.
    • 19.19% of those who perceived leukocytes could not see an equal number in all four quadrants.
    • Patients unable to perceive an equal distribution were generally older.

    Conclusions:

    • The Blue Field Entoptoscope is generally effective for visualizing leukocytes in most individuals.
    • Age appears to be a significant factor influencing the perception of leukocyte distribution.
    • Standardization of the Blue Field Entoptoscope for age is recommended for clinical and research use.

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