Ultrasound Biomicroscopic Features Associated with Angle Closure in Fellow Eyes of Acute Primary Angle Closure after Laser Iridotomy

Yao, Baoqun; Wu, Lingling; Zhang, Chun; Wang, Xin

doi:10.1016/j.ophtha.2008.10.019

Cited by 44 publications

(23 citation statements)

References 16 publications

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“…15 is and the greater the LV is, the thinner the ciliary body is and the more it is anteriorly located. Consistent with previous studies, 11,12,19,20 the ciliary body in APAC eyes and fellow eyes was more anteriorly rotated than that in normal eyes in the current study, which has been regarded as one of the risk factors of angle closure. However, contrary to previous UBM studies, 11,12 we found that ciliary body thickness decreased in APAC eyes and their fellow eyes.…”

Section: Discussionsupporting

confidence: 92%

Quantitative Measurements of the Ciliary Body in Eyes With Acute Primary-Angle Closure

Wang

Chung

Lin

et al. 2016

Invest. Ophthalmol. Vis. Sci.

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PURPOSE.To compare the structural differences of the ciliary body in patients with acute primary-angle closure (APAC) and normal subjects. METHODS.Forty-four patients with APAC in one eye and 25 eyes from 25 age-matched normal subjects were consecutively recruited. A-scan ultrasound and ultrasound biomicroscopy (UBM) measurements were performed. Ciliary body parameters including maximum ciliary body thickness (CBTmax), ciliary body thickness at point of the scleral spur (CBT0) and 1000 lm from the scleral spur (CBT1000), anterior placement of ciliary body (APCB), and trabecular-ciliary process angle (TCA), as well as biometric measurements, were measured.RESULTS. Average CBTmax was 0.894 6 0.114, 0.967 6 0.110, and 1.053 6 0.103 mm in eyes with APAC, their fellow eyes, and normal eyes, respectively. Average CBT1000 was 0.616 6 0.111, 0.631 6 0.088, and 0.842 6 0.118 mm, respectively. Average TCA was 48.10 6 13.268, 50.60 6 9.088, and 87.11 6 20.718, respectively. CBTmax and CBT0 were thinner in eyes with APAC compared with their fellow eyes (P ¼ 0.002, P < 0.001). In addition, CBTmax, CBT1000, and TCA were smaller whereas APCB was larger in the fellow eyes of APAC patients compared with normal eyes (P ¼ 0.002, P < 0.001, P < 0.001, P < 0.001). The anterior chamber depth (ACD) was smaller whereas lens thickness (LT) was larger in eyes with APAC compared with their fellow eyes (P < 0.001, P ¼ 0.036). Smaller ACD and axial length and larger LT and lens vault were found in the fellow eyes of APAC patients compared with normal eyes (P < 0.001, P < 0.001, P ¼ 0.015, P ¼ 0.001).CONCLUSIONS. Ciliary bodies were thinner and more anteriorly rotated in eyes with APAC as well as in their fellow eyes. Further studies are needed to elucidate the relationship between ciliary body parameters and mechanism of APAC.

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Section: Discussionsupporting

confidence: 92%

Quantitative Measurements of the Ciliary Body in Eyes With Acute Primary-Angle Closure

Wang

Chung

Lin

et al. 2016

Invest. Ophthalmol. Vis. Sci.

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“…They concluded that a narrower angle, more anterior position of the ciliary body, and thicker peripheral iris in the fellow eyes of those with acute primary-angle closure after LPI may be associated with an increased risk for progressive angle closure. 10 We speculate that the anterior position of the ciliary body in eyes with narrow angles causes the more anterior position of the lens.…”

Section: Discussionmentioning

confidence: 83%

“…This fi nding is thus consistent with previously reported results. Yao et al 10 recently reported that under dark conditions, more than one-third of fellow eyes of those with acute primary-angle closure showed appositional angle closure in at least one quadrant after laser peripheral iridotomy (LPI). They concluded that a narrower angle, more anterior position of the ciliary body, and thicker peripheral iris in the fellow eyes of those with acute primary-angle closure after LPI may be associated with an increased risk for progressive angle closure.…”

Section: Discussionmentioning

confidence: 99%

Relationship between relative lens position and appositional closure in eyes with narrow angles

et al. 2011

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“…[10][11][12] LPİ, ön ve arka kamara arasındaki basınç farkını ortadan kaldırarak irisin düzleşmesini ve periferik irisin açıdan uzaklaşmasını dolayısı ile ön kamara açısının genişlemesini sağlar. Özellikle erken fark edilmiş, yaygın periferik ön sineşi ve optik nöropati gelişmemiş olgularda yararlıdır.…”

Section: Discussionunclassified

Evaluation of the Changes in Anterior Segment Morphology After Laser Peripheral Iridotomy Through One-Year Follow-Up

Yiğit¹,

Onur²,

Acet³

et al. 2014

tjo

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Amaç:Primer açı kapanması şüphesi (PAKŞ), primer açı kapanması (PAK) ve primer açı kapanması glokomu (PAKG) tanısıyla laser periferik iridotomi (LPİ) yapılan gözlerde ön segment morfolojisinde meydana gelen uzun süreli değişikliklerin Scheimpflug kamera (SK) ile değerlendirilmesi. Gereç ve Yöntem: PAKŞ, PAK ve PAKG tanısı alan 30 hastanın 50 gözü prospektif olarak çalışmaya alındı. Tüm olguların tam oftalmik muayene ve göz içi basıncı (GİB) ölçümüne ek olarak gözlerin ön-arka uzunluğu (AU) kaydedildi. LPİ öncesi ve LPİ sonrası 1. ay, 3. ay, 6. ay, 12. ay kontrollerinde SK ile ortalama ön kamara açısı (OÖKA), santral ön kamara derinliği (SÖKD) ve ön kamara hacmi (ÖKH) ölçüldü. Sonuçlar istatistiksel olarak değerlendirildi. Bulgular: Gruplar arasında yaş ortalamaları, cinsiyet ve (AU) bakımından istatistiksel olarak anlamlı fark saptanmadı (p>0,05). OÖKA, SÖKD ve ÖKH ölçümleri tüm gruplarda başlangıç ile 1., 3., 6., 12. aylar arasında istatistiksel olarak anlamlı azalma gösterdi (p<0,05). OÖKA; PAKŞ grubunda 6. ve 12. ay; PAK ve PAKG grubunda 1. ve 12., 3. ve 12., 6. ve 12. aylar arasında istatistiksel olarak anlamlı azalma gösterdi (p<0,05). SÖKD ölçümleri PAK grubunda 6. ve 12. aylar arası, PAKG grubunda 3. ve 6. aylar ile 3. ve 12. aylar arasında istatistiksel olarak anlamlı azalma gösterdi (p<0,05). ÖKH, PAK grubunda 6. ve 12. aylar arası, PAKG grubunda 1. ve 12. aylar ile 3. ve 12. aylar arasında ölçümlerde azalma istatistiksel olarak anlamlıydı (p<0,05). Sonuç: LPİ uygulaması ön segment morfolojisinde dramatik değişiklikler oluşturur. Çalışmamızda, LPİ ile oluşturulan değişimlerin seyri SK ile bir yıl süreyle izlenmiştir. Erken dönemde tüm parametreleri olumlu etkilediği gözlenmiştir. Ölçümlerin seyrindeki eğilimlerin devamlılık gösterip göstermediği daha uzun süreli daha geniş seriler ile izlenmelidir. (Turk J Ophthalmol 2014; 44: 6-10) Anahtar Kelimeler: Laser periferik iridotomi, primer açı kapanması şüphesi, primer açı kapanması, primer açı kapanması glokomu, Scheimpflug kamera Objectives: To evaluate the long-term changes in anterior segment morphology after laser peripheral iridotomy (LPI) in eyes with primary angle-closure suspect (PACS), primary angle closure (PAC), and primary angle-closure glaucoma (PACG) using Scheimpflug camera (SC). Materials and Methods: Fifty-six eyes of 30 patients diagnosed as PACS, PAC, and PACG were included prospectively in this study. In addition to full ophthalmic examination and intraocular pressure (IOP) assessment, anterior-posterior length (AxL) values of the eyes were recorded. With use of SC, average anterior chamber angle (AACA), central anterior chamber depth (CACD), and anterior chamber volume (ACV) were documented preoperatively and at 1 month, 3 months, 6 months, and 12 months after LPI. The results have been evaluated statistically. Results: There was no statistically significant difference between the groups in terms of mean age, gender, and AxL (p>0.05). AACA, CACD, and ACV measurements showed significant difference between baseline and months 1.3, 6, and ...

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Ultrasound Biomicroscopic Features Associated with Angle Closure in Fellow Eyes of Acute Primary Angle Closure after Laser Iridotomy

Cited by 44 publications

References 16 publications

Quantitative Measurements of the Ciliary Body in Eyes With Acute Primary-Angle Closure

Quantitative Measurements of the Ciliary Body in Eyes With Acute Primary-Angle Closure

Relationship between relative lens position and appositional closure in eyes with narrow angles

Evaluation of the Changes in Anterior Segment Morphology After Laser Peripheral Iridotomy Through One-Year Follow-Up

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