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Abstract #27687 Published in IGR 13-1
Relationship between relative lens position and appositional closure in eyes with narrow angles
Otori Y; Tomita Y; Hamamoto A; Fukui K; Usui S; Tatebayashi MJapanese Journal of Ophthalmology 2011; 55: 103-106
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.
Department of Ophthalmology, National Hospital Organization Osaka National Hospital, Osaka, Japan, yotori@onh.go.jp.
Classification:
9.3.4 Primary angle closure suspect (Part of: 9 Clinical forms of glaucomas > 9.3 Primary angle closure glaucomas)
2.10 Lens (Part of: 2 Anatomical structures in glaucoma)