Biomorphometric indices in primary angle closure glaucoma

Objective & Hypothesis:PURPOSE: To compare the biometric İndices of eyes with chronic, acute/intermittent primary angle-closure glaucoma (PACG) with normal eyes METHODS: A total of 39 patients with PACG were studied: 20 with chronic (Group 1, 36 eyes), 9 with intermittent (18 eyes) and 10 acute (15 eyes) types of PACG.

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Key Findings & Data:Group 2 was composed of acute/intermittent PACG (33 eyes).

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Conclusion & Impact:The biomorphometric indexes are useful in the determination of anatomic differences.

🔬Design:Research Article

📍Scope:Comprehensive Sample

⚙️Variables:Ön kamara · Lensler · Ultrasonografi

Abstract

PURPOSE: To compare the biometric İndices of eyes with chronic, acute/intermittent primary angle-closure glaucoma (PACG) with normal eyes METHODS: A total of 39 patients with PACG were studied: 20 with chronic (Group 1, 36 eyes), 9 with intermittent (18 eyes) and 10 acute (15 eyes) types of PACG. Group 2 was composed of acute/intermittent PACG (33 eyes). As control subjects (Group 3) 72 eyes of 41 cases were studied. Standardized A-scan ultrasonography was performed and anterior chamber depth (ACD), lens thickness (LT), axial length (AL), ACD/AL and LT/AL factors were measured. RESULTS: The mean values were ACD=2.85 mm, LT=4.14 mm, AU=22.29 mm in PACG and ACD=3.19 mm, LT= 4.06 mm and AU=23.01 in normal subjects. In cases with PACG, ACD was narrower and LT was thicker than normal subjects. ACD/AL values were 1.17 in PACG and 1.86 in Group 3 and LT/AL values were 1.39 in PACG and 1.77 in Group 3 and there were statistically significant differences between groups. Within PACG, ACD was shallower in Group 2 compared to Group 1 and AL was shorter than Group 3. in Group 1 ACD/AL factor was bigger than Group 2 and less than Group 3 additionally, LT/AL factor was less than Group 2 and more than Group 3. Group 2 had lowest ACD/AL factor and greatest LT/AL factor. CONCLUSION: In the eyes with PACG, the anterior segment is more crowded due to a shallower anterior chamber and a thicker lens. A gradual progressive shift of anatomic characteristics is observed on passing from normal to chronic PACG and then to acute/intermittent PACG. The biomorphometric indexes are useful in the determination of anatomic differences.

Özet

AMAÇ: Kronik, intermitan/akut açı kapanması atağı geçiren primer açı kapanması glokomlu (PAKG) olguların biometrik indekslerini normal olgularla karşılaştırmak. YÖNTEM: PAKG'lu toplam 39 hasta incelendi: Grup 1 de kronik PAKG'lu 20 olgu (36 göz) ve Grup 2'de intermitan PAKG'lu 9 olgu (18 göz) ve akut açı kapanması atağı olan 10 olgu (15 göz), ile 41 normal olgunun (Grup 3) 72 gözü A-Mod ultrasonografi ile ön kamara derinliği (ÖKD), lens kalınlığı (LK) ve aksiel uzunlukları (AU) ölçüldü. Ön kamara derinliği/aksiel uzunluk faktörü (ÖKD/AU) ve lens kalınlığı/aksiel uzunluk faktörleri (LK/AU) hesaplandı. BULGULAR: PAKG'lu olguların ortalama ÖKD=2.85 mm, LK=4.14 mm, AU= 22.29 mm iken kontrol grubunda (Grup 3) ÖKD=3.19 mm, LK= 4.06 mm, AU= 23.01 mm olarak ölçüldü. PAKG'lu gözlerde ÖKD daha dar, LK ise daha fazla izlendi. PAKG'lu olgularda ÖKD/AU faktörü=1.17 ve LK/AU faktörü 1.86 olup Grup 3 de ÖKD/AU faktörü=1.39 ve LK/AU faktörü=1.77 olup fark istatistiksel olarak anlamlı bulundu. Grup 2 nin ÖKD'si Grup 1'e oranla daha dar ve AU değeri Grup 3'den daha küçüktü. Grup 1'in ÖKD/AU faktörü Grup 2'den büyük Grup 3'den küçüktü, LK/AU faktörü ise Grup 2'den küçük Grup 3'den büyük izlendi. Grup 2 en küçük ÖKD/AU faktörü ve en büyük LK/AU faktörü değerlerine sahipti. SONUÇLAR: PAKG'lu olguların normal gözlere oranla ön segmenti daha sıkışık olup, anatomik farklılıklarını değerlendirmede ÖKD, LK, AU ve ÖKD/AU ve LK/AU faktörleri oldukça yardımcı indekslerdir. Normalden, kronik PAKG'a ve kronik PAKG' dan intermitan/akut açı kapanması glokomuna geçtikçe anatomik yapıda sıkışıklık izlenmiştir.

Keywords

Ön kamara Lensler Ultrasonografi Glokom dar-açılı Anterior Chamber Lenses Ultrasonography Glaucoma Angle-Closure

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Cite This Article

MİDİLLİOĞLU, K. İ., YALVAÇ, S. I., ALTINTAŞ, K. A. G., DUMAN, S. (2000). Biomorphometric indices in primary angle closure glaucoma. MN Oftalmoloji, Cilt: 7 - Sayı: 3, 233–236. https://ajindex.com/articles/296440

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