Original articleAcute primary angle closure: Configuration of the drainage angle in the first year after laser peripheral iridotomy☆
Section snippets
Materials and methods
Subjects with APAC who were 21 years or older were eligible for the study. Written informed consent was obtained from all subjects, and the study had the approval of the Ethics Committee of the Singapore National Eye Centre and was performed according to the tenets of the Declaration of Helsinki. Demographic characteristics and ophthalmic data related to the APAC episode (such as laterality of the affected eye, duration of acute symptoms, and presenting IOP) were recorded. Characteristics of
Results
A total of 44 APAC subjects completed the study. All subjects were of Asian origin, with the majority of Chinese (84%) ethnicity (Table 1). There were 29 females (64%), and the mean age was 60.2±10.7 years (range, 35–99). Disease presentation was unilateral in all cases, and the characteristics of the acute episode, such as presenting IOP, duration of symptoms, and the interval between presentation and LPI, are summarized in Table 2. Interobserver correlation between the 2 investigators
Discussion
Changes in angle configuration over time have previously been reported in a Mongolian population.13 A median increase of 2 Shaffer grades was documented after 1 to 3 years in eyes treated with LPI, and the number of quadrants affected by PAS was stable in 64%, decreased in 18.8%, and increased in 25%. However, the study population involved a mix of cases of asymptomatic narrow angles, primary angle closure, and primary angle glaucoma (defined according to the terminology proposed by Foster et al
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Cited by (58)
Laser Peripheral Iridotomy in Primary Angle Closure: A Report by the American Academy of Ophthalmology
2018, OphthalmologyCitation Excerpt :Six studies used both gonioscopy and imaging (UBM or ASOCT) to evaluate the angle. Of the 13 studies that used gonioscopy, 10 studies7,8,10,12,15–19,21 reported the change in angle width after LPI, 2 studies22,23 reported only the proportion of subjects with persistent ITC after LPI, and 1 study14 only commented on the change in PAS after LPI. All but 3 studies had subjects of Asian origin, including Chinese, Mongolian, Korean, Indian, and Vietnamese.
Changes in Anterior Segment Morphology after Laser Peripheral Iridotomy in Acute Primary Angle Closure
2016, American Journal of OphthalmologyEarly phacoemulsification in patients with acute primary angle closure
2015, Journal of Current OphthalmologyCitation Excerpt :The literature describing the effect of LPI on amount of PAS is controversial. Although one study demonstrated a decrease in PAS extent after LPI,17 several studies showed that LPI has little effect on reversing established synechiae and but may prevent progressive synechial closure after the procedure.22 In our LPI Only group, the PAS extent increased approximately 20° during the follow-up period.
Acute Intraocular Pressure Rise
2015, Glaucoma: Second EditionPeripheral yttrium aluminium garnet (YAG) iridotomy versus phacoemulsification in primary angle closure: Prospective comparative study
2014, Archivos de la Sociedad Espanola de Oftalmologia
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Manuscript no. 230747.