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. 1992 Nov;76(11):678–680. doi: 10.1136/bjo.76.11.678

A photometric study of the effect of pupil dilatation on Nd:YAG laser iridotomy area.

B W Fleck 1, E Fairley 1, E Wright 1
PMCID: PMC504374  PMID: 1477045

Abstract

A photometric study of the effect of pupil dilatation on Nd:YAG laser iridotomy area was performed in 21 eyes of 21 patients. The iridotomy area was 0.075 (0.055) mm-2 (mean (SD)) before pupil dilatation and 0.073 (0.070) mm-2 after pupil dilatation (t test NS). Iridotomy area after pupil dilatation correlated with iridotomy area before pupil dilatation (r = 0.815, p < 0.01) but did not significantly correlate with measures of iridotomy shape or position, or with changed iris area following pupil dilatation. Two iridotomies became reduced to less than 20% of their initial area following pupil dilatation. Our findings suggest that the only effective method of avoiding development of unacceptably small iridotomy area after pupil dilatation is to create a sufficiently large iridotomy at the time of initial laser surgery.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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