Which visual symptoms may develop following laser peripheral iridotomy (LPI)?

Updated: Jun 15, 2020
  • Author: Frank X Cao, MD; Chief Editor: C Stephen Foster, MD, FACS, FACR, FAAO, FARVO  more...
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Different visual symptoms can present after LPI. Transient blurred vision may occur in the immediate postlaser period. Possible causes include pigment dispersion, inflammation, and retained methylcellulose from contact lens placement. [13]

One study found that optical aberrations (eg, shadows, ghost images, lines, haloes, spots, glare, diplopia, and spots) were reported in 9% of eyes with completely covered iridotomies, 26% of those with partially covered iridotomies, and 17.5% of those with fully exposed iridotomies. [17] The authors concluded that a fully covered iridotomy is less prone to visual disturbances than a fully exposed or partially covered iridotomy. [17] One randomized study found that the location of the LPI (superior vs nasal/temporal) does not affect the likelihood of postoperative visual symptoms. [18] Six-month follow-up of these patients revealed that these visual symptoms frequently resolve over time. [19]

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