Comparison of anterior segment parameters with pentacam according to age in emmetropic eyes

Abstract

Objective: It was aimed to compare anterior segment parameters obtained by rotating Scheimpflug camera system according to age groups.Methods: 290 eyes of 145 emmetropic subjects were included in the study. Subjects were divided in three age groups. Group 1 comprised the subjects age up to 20 years, Group 2 comprised the subjects age between 21 and 40 and Group 3 comprised the subjects between 41 years and older. In all subjects, flat keratometry (K1), steep keratometry (K2), mean corneal power (Km), maximum keratometry (Kmax), central corneal thickness (CCT), apex corneal thickness (ACT), thinnest corneal thickness (TCT), anterior chamber volume (ACV) and anterior chamber depth (ACD) were obtained by using rotating Scheimpflug camera system. To eliminate operator dependent variables, automatic release mode was used. All measurements were obtained by the same examiner. Results:The study included 72 female and 73 male subjects. The mean age of the subjects was 31.37±12.29 years (range, 8-65). There were no significant differences in keratometric values between age groups. There was significant difference between Groups 1 and 3 and Groups 2 and 3 in the mean CCT, ACT and TCT (p<0.05). There was significant difference between the groups in the mean ACD and ACV. There significant positive correlation between age and CCT (r=0.181, p=0.001), ACT (r=0.161, p=0.006) and TCT (r=0.16, p=0.006). There were significant negative correlations between age and ACD (r=-0.376, p<0.001) and ACV (r=-0.367, p<0.001). Conclusion:In the emmetropic eyes, significant reduction was found in ACD and ACV, while there was significant increase in CCT, ACT and TCT by age. Yöntemler: Çalışmaya katılan 145 emetrop olgunun 290 gözüne ait Pentacam parametreleri değerlendirildi. Olgular yaşlarına göre üç gruba ayrıldı. Grup 1, yirmi yaşına kadar olan olguları, grup 2, 21-40 yaş arası olan olguları ve grup 3, ise 41 yaşından büyük olan olguları içermek-teydi. Tüm olguların düz keratometri (K1), dik keratometri (K2), ortalama kornea kırıcılığı (Km), maksimum keratometri (Kmax), merkezi kornea kalınlığı (MKK), apeks kornea kalınlığı (AKK), en ince kornea kalınlığı (EİKK), ön kamara hacmi (ÖKH) ve ön kamara derinliği (ÖKD) değerlendirmeye alındı. Ölçümler sırasında kullanıcıya bağlı değişkenleri ekarte etmek amacıyla otomatik çekim modu kullanıldı ve tüm çekimler aynı araştırmacı tarafın-dan yapıldı. Bulgular:Olguların 72'si kadın, 73'ü ise erkekti ve ortalama yaşları 31,37±12,29 yıl (8-65 yıl) idi. Keratometrik değerler açısından yaş grupları arasında anlamlı farklı-lık saptanmadı. Ortalama MKK, AKK ve EİKK değerleri açısından grup 1-3 ve grup 2-3 arasında, ortalama ÖKH ve ÖKD değerleri arasından ise tüm gruplarda istatistiksel olarak anlamlı farklılık mevcuttu (p<0,05). Yaş ile MKK (r=0,181, p=0,001), AKK (r=0,161, p=0,006) ve EİKK (r= 0,16, p=0,006) arasında anlamlı pozitif korelasyon saptanırken, yaş ile ÖKD (r=-0,376, p<0,001) ve ÖKH arasında (r=-0,367, p<0,001) anlamlı negatif korelasyon saptandı.Sonuç: Emetropik olgularda ileri yaş grup...

Investigation of the relationship of corneal densitometry, corneal volume and central corneal thickness with age in healthy individuals

“…In some studies, CCT has been shown to decrease with increasing age [20,21], while in others, it was unrelated [19]. In a study conducted in our country, it was stated that CCT increased in older age groups [22]. In our study, no significant relationship was found between CCT and age.…”

Agreement between swept-source optical biometry and Scheimpflug-based topography measurements of posterior corneal curvature

“…1,2 Current devices for measuring posterior corneal analysis use scanning-slit corneal topography (Orbscan; Bausch & Lomb, Inc.), color light-emitting diode topography (Cassini system; i-Optics Corp.; Ophtec), swept-source optical coherence tomography (SS-OCT), and Scheimpflug imaging. [3][4][5][6][7][8][9][10] IOLMaster 700, Anterion (Heidelberg Engineering GmbH), and Eyestar 900 (Haag-Streit AG) devices are based on SS-OCT technology. The Scheimpflug imaging technique is available in many devices such as the Pentacam HR, the Sirius (Costruzione Strumenti Oftalmici), the TMS-5 (Tomey Corp.), and the Galilei (Ziemer Ophthalmic Systems AG).…”