Alvaro Ortiz1,2, Virgilio Galvis3,4, Alejandro Tello3,4, Victor Viaña3, Maria Isabel Corrales4,5, Miguel Ochoa4,6, Carlos Julián Rodriguez3. 1. Centro Oftalmológico Aljaorza, Second Floor, Machala, Ecuador. docaortizoft@gmail.com. 2. Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia. docaortizoft@gmail.com. 3. Centro Oftalmológico Virgilio Galvis, Floridablanca, Colombia. 4. Universidad Autónoma de Bucaramanga UNAB, Bucaramanga, Colombia. 5. Ophthalmology Resident, Fundación Oftalmológica de Santander - FOSCAL, Floridablanca, Colombia. 6. Fundación Oftalmológica de Santander - FOSCAL, Floridablanca, Colombia.
Abstract
PURPOSE: To evaluate the results of optical biometry using the IOLMaster 500, Lenstar LS 900 and Aladdin in eyes with cataract. METHODS: In 231 eyes of 152 patients with cataract, the measurements of 3 different biometers were retrospectively compared. Paired comparisons were performed for axial length (AL), mean keratometry (mean K) and anterior chamber depth (ACD). RESULTS: In only 197 of the 231 eyes (85.3%), it was possible to obtain reliable measurements of AL with all the three devices. It was not possible to determine AL in 16 eyes (6.9%) with Lenstar LS 900; in 19 eyes (8.2%) with Aladdin; and in 20 eyes (8.6%) with IOLMaster 500 possibly related to the severity of lens opacification (the corneas had good transparency in the eyes included in the study). There was a statistically significant difference in AL between IOLMaster 500 and the remaining two biometers (P = 0.03). However, the amount of difference was considered clinically not significant (0.04 mm). The mean keratometry (mean K) was determined in 203 eyes (87.9%) with all the three devices. Differences in mean K were between - 0.1 and 0.06 Diopters (D), which were considered neither statistically (P > 0.05) nor clinically significant. The anterior chamber depth (ACD) was determined in 197 eyes (85.28%) with all the three biometers. The differences between the three devices (0.03 to 0.13 mm) were not statistically significant and considered also clinically not significant. CONCLUSIONS: There were no clinically significant differences between these 3 biometers in AL, mean K and ACD.
PURPOSE: To evaluate the results of optical biometry using the IOLMaster 500, Lenstar LS 900 and Aladdin in eyes with cataract. METHODS: In 231 eyes of 152 patients with cataract, the measurements of 3 different biometers were retrospectively compared. Paired comparisons were performed for axial length (AL), mean keratometry (mean K) and anterior chamber depth (ACD). RESULTS: In only 197 of the 231 eyes (85.3%), it was possible to obtain reliable measurements of AL with all the three devices. It was not possible to determine AL in 16 eyes (6.9%) with Lenstar LS 900; in 19 eyes (8.2%) with Aladdin; and in 20 eyes (8.6%) with IOLMaster 500 possibly related to the severity of lens opacification (the corneas had good transparency in the eyes included in the study). There was a statistically significant difference in AL between IOLMaster 500 and the remaining two biometers (P = 0.03). However, the amount of difference was considered clinically not significant (0.04 mm). The mean keratometry (mean K) was determined in 203 eyes (87.9%) with all the three devices. Differences in mean K were between - 0.1 and 0.06 Diopters (D), which were considered neither statistically (P > 0.05) nor clinically significant. The anterior chamber depth (ACD) was determined in 197 eyes (85.28%) with all the three biometers. The differences between the three devices (0.03 to 0.13 mm) were not statistically significant and considered also clinically not significant. CONCLUSIONS: There were no clinically significant differences between these 3 biometers in AL, mean K and ACD.