A study of iridectomy histopathologic features of latanoprost- and non-latanoprost-treated patients

Daniel Albert, Ronald E. Gangnon, Michele L. Zimbric, Christine M. Damico, Marian R. Fisher, Joel Gleiser, Hans E. Grossniklaus, W. Richard Green

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Objectives: To examine the histopathologic features of iridectomy specimens from patients undergoing glaucoma surgery and to compare histologic abnormalities in a group of patients with a history of latanoprost therapy with those in a group of patients who had no history of prostaglandin therapy (controls). Methods: Iridectomy specimens and patient history forms were submitted to the central Latanoprost Pathology Center. These were independently examined by 3 ophthalmic pathologists in a masked fashion. Specimens were evaluated for malignant, premalignant, and other changes including differences in levels of pigmentation, degrees of cellularity, inflammation, vascular abnormalities, and changes in the iris pigment epithelium. Results: Specimens were received from 449 patients with a history of latanoprost treatment and 142 patients who had no history of treatment with latanoprost or other prostaglandin analogues. No evidence of malignant or premalignant changes was found. In latanoprost-treated irides, the prevalence of iris freckles was higher (P=.001) than in control irides, as was the combined number of stromal fibroblasts and melanocytes (P<.001). In a subgroup of specimens received through June 2002, there was no significant difference in mean melanocyte counts (P=.35) obtained by immunohistochemical staining techniques between the latanoprost-treated and control groups. Conclusions: These findings support previous studies indicating that latanoprost-induced eye color changes are due to an increased amount of melanin within the iris stromal melanocytes. The increased numbers of freckles may be a focal manifestation of this effect.

Original languageEnglish (US)
Pages (from-to)1680-1685
Number of pages6
JournalArchives of ophthalmology
Volume122
Issue number11
DOIs
StatePublished - Nov 1 2004
Externally publishedYes

Fingerprint

latanoprost
Iridectomy
Iris
Melanocytes
Melanosis
Eye Color
Synthetic Prostaglandins
Melanins
Pigmentation
Therapeutics
Glaucoma
Prostaglandins
Blood Vessels

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Albert, D., Gangnon, R. E., Zimbric, M. L., Damico, C. M., Fisher, M. R., Gleiser, J., ... Green, W. R. (2004). A study of iridectomy histopathologic features of latanoprost- and non-latanoprost-treated patients. Archives of ophthalmology, 122(11), 1680-1685. https://doi.org/10.1001/archopht.122.11.1680

A study of iridectomy histopathologic features of latanoprost- and non-latanoprost-treated patients. / Albert, Daniel; Gangnon, Ronald E.; Zimbric, Michele L.; Damico, Christine M.; Fisher, Marian R.; Gleiser, Joel; Grossniklaus, Hans E.; Green, W. Richard.

In: Archives of ophthalmology, Vol. 122, No. 11, 01.11.2004, p. 1680-1685.

Research output: Contribution to journalArticle

Albert, D, Gangnon, RE, Zimbric, ML, Damico, CM, Fisher, MR, Gleiser, J, Grossniklaus, HE & Green, WR 2004, 'A study of iridectomy histopathologic features of latanoprost- and non-latanoprost-treated patients', Archives of ophthalmology, vol. 122, no. 11, pp. 1680-1685. https://doi.org/10.1001/archopht.122.11.1680
Albert, Daniel ; Gangnon, Ronald E. ; Zimbric, Michele L. ; Damico, Christine M. ; Fisher, Marian R. ; Gleiser, Joel ; Grossniklaus, Hans E. ; Green, W. Richard. / A study of iridectomy histopathologic features of latanoprost- and non-latanoprost-treated patients. In: Archives of ophthalmology. 2004 ; Vol. 122, No. 11. pp. 1680-1685.
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