|
KMID : 0360220150560071059
|
|
Journal of the Korean Ophthalmological Society
2015 Volume.56 No. 7 p.1059 ~ p.1064
|
|
|
Comparison of the Postoperative Refractive Errors Measured by Ultrasound and Partial Coherence Interferometers after Phacovitrectomy
|
|
Park Ju-Hong
Jeong Seong-Yong
Kim Myung-mi
Chang Woo-Hyok
|
|
|
Abstract
|
|
|
Purpose: To compare the accuracy of refractive outcome measured by Ultrascan (Alcon, Fort Worth, TX, USA) and partial coherence interferometers after phacovitrectomy.
Methods: We performed a retrospective study in 74 eyes of 74 patients who underwent phacovitrectomy. SRK-T formula was used to predict intraocular lens (IOL) power. The difference between the predicted and postoperative refractive outcomes for the 2 methodologies (Ultrascan and IOL Master [Zeiss, Carl Zeiss, Jena, Germany]) were compared. The predicted refractive outcome was defined as the estimated refractive error when the selected IOL was inserted.
Results: The axial length measured using IOL Master was statistically longer than when measured using Ultrascan (23.85 ± 0.15 mm, 23.56 ± 0.15 mm, p < 0.001). Based on keratometry, statistically significant difference between the 2 groups was not observed. The postoperative refractive error was more accurate when using the IOL Master than Ultrascan (0.08 ± 0.74, 0.47 ± 0.69, p < 0.001). However, in cases of vitreous hemorrhage, the postoperative refractive error was 0.42 ± 0.49 with the IOL Master and 0.07 ± 0.54 with the Ultrascan.
Conclusions: Generally, IOL Master is a more accurate method for calculating the IOL power prior to phacovitrectomy. However, in cases of vitreous hemorrhage, Ultrascan appears superior to IOL Master when calculating the IOL power.
|
|
|
KEYWORD
|
|
|
IOL Master, Phacovitrecotmy, Refractive error, Ultrasound
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
  
|
|