Phacolytic Glaucoma Diagnosed by Cytopathology: A Clinicopathologic Case Series.

Purpose: The aim of this study was to describe the clinical presentation, histopathologic characteristics, and management of phacolytic glaucoma. Patients and Methods: The database at the Florida Lions Ocular Pathology Laboratory was searched for surgical specimens at the Bascom Palmer Eye Institute. Patients with a diagnosis of "phacolytic glaucoma" on cytopathology between the years of 1997 and 2023 were included (n = 15). Patient demographics, anatomic site, laterality, clinical features, and ocular examination findings were obtained from available medical records. Results: The diagnosis of phacolytic glaucoma was established by light microscopic examination of cytology specimens in 15 eyes (Right = 8, Left = 6, not specified = 1). Between 1997 and 2023, there were 32 cytopathology cases with a preoperative diagnosis of phacolytic glaucoma. From this group of 15 cases, there were nine males and six females. Mean age was 64.2 years (Range: 39–87). Thirteen samples were from the anterior chamber and two were obtained from the vitreous. All 15 cases (100%) demonstrated histiocytes with engulfed foamy and/or granular presumed lenticular material. CD68 immunohistochemistry was positive within histiocytes in four cases that were stained (100%). Of the available medical records, clinical features, and ocular examination findings included: eye redness, decreased vision, eye pain, anterior chamber inflammation, dislocated or subluxed crystalline lens, cataract, and elevated intraocular pressure (average = 41.3 ± 8.67 mm Hg). Conclusions: Phacolytic glaucoma is a rare complication of mature/hypermature cataracts that presents with ocular pain, decreased vision, and anterior chamber inflammation. AC paracentesis with cytopathologic evaluation is a minimally invasive, rapid technique that can aid in the diagnosis and management of this disease. [ABSTRACT FROM AUTHOR]