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Relationship between relative lens position and appositional closure in eyes with narrow angles

  • Clinical Investigation
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Abstract

Purpose

To investigate the relationship between relative lens position (RLP) and appositional closure in eyes with narrow angles.

Methods

Ultrasound biomicroscopy (UBM) was used to measure anterior chamber depth (ACD) and lens thickness (LT), and the IOLMaster to measure axial length (AL). The number of quadrants with appositional closure was assessed by UBM under dark conditions. The RLP was calculated thus: RLP = 10 × (ACD + 0.5 LT) /AL.

Results

This study comprised 30 consecutive patients (30 eyes) with narrow-angle eyes defined as Shaffer grade 2 or lower and without peripheral anterior synechiae (24 women, 6 men; mean age ± SD, 67.3 ± 10.4 years; range, 42–87 years). Under dark conditions, 66.7% of the eyes with narrow angles showed appositional closure in at least one quadrant. Of the various ocular biometric parameters, only the RLP significantly decreased with appositional closure in at least one quadrant (P = 0.005).

Conclusion

A decrease in the RLP can be predictive of appositional closure for narrow-angle eyes under dark conditions.

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Authors and Affiliations

  1. Department of Ophthalmology, National Hospital Organization Osaka National Hospital, Osaka, Japan

    Yasumasa Otori, Yuki Tomita, Ayumi Hamamoto, Kanae Fukui, Shinichi Usui & Misako Tatebayashi

  2. Department of Ophthalmology, National Hospital Organization Osaka National Hospital, 2-1-14 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan

    Yasumasa Otori

Authors
  1. Yasumasa Otori
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  2. Yuki Tomita
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  3. Ayumi Hamamoto
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  4. Kanae Fukui
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  5. Shinichi Usui
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  6. Misako Tatebayashi
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Corresponding author

Correspondence to Yasumasa Otori.

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Otori, Y., Tomita, Y., Hamamoto, A. et al. Relationship between relative lens position and appositional closure in eyes with narrow angles. Jpn J Ophthalmol 55, 103–106 (2011). https://doi.org/10.1007/s10384-010-0918-6

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  • DOI: https://doi.org/10.1007/s10384-010-0918-6

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