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Relationship of the Van Herick Grading System with Peripheral Iris Configuration and Level of Iris Insertion
Faisal Aziz Khan1, Shafaq Pervez Khan Niazi1, Assad Zaman Khan1
1Department of Ophthalmology, Combined Military Hospital, Malir Cantt., Karachi.
Objective:
To determine the relationship of the van Herick angle grading system with the level of iris insertion and peripheral iris configuration.
Study Design:
Observational study.
Place And Duration Of Study:
Eye department, Combined Military Hospital, Malir Cantt., Karachi, from May to October 2015.
Methodology:
Sixty-five eyes of 65 patients were recruited. Anterior chamber depth at the temporal limbus was measured as a fraction of corneal section thickness using van Herick technique and graded on the standard 4-point scale of the van Herick grading system. Gonioscopy of the temporal quadrant was performed with a Posner 4 mirror goniolens and both the true level of iris insertion and peripheral iris configuration were recorded on a 4-point scale so as to equate with the van Herick 4-point grading system. Spearman's rho test was applied to determine the relationship of the van Herick grading system with level of iris root insertion and peripheral iris configuration.
Results:
Amoderate positive correlation between van Herick grade and peripheral iris configuration was found which was statistically significant (rs=0.42, p < 0.001). Astatistically significant and moderate positive correlation was also detected between van Herick grade and the level of iris insertion (rs=0.45, p < 0.001).
Conclusion:
The van Herick grade has a moderately positive relationship with the peripheral iris configuration and true level of iris insertion.
