Comparison of IOLMaster(R) and A-Scan Ultrasound: Change in Axial Length After Vitrectomy in Macular Disease.
10.3341/jkos.2009.50.8.1226
- Author:
Seung Won LEE
1
;
Young Gun KIM
;
Seung Jun LEE
;
Do Kyun KIM
;
Hyung Woo KWAK
;
Seung Young YU
Author Information
1. Department of Ophthalmology, KyungHee University, School of Medicine, Seoul, Korea. syyu@khu.ac.kr
- Publication Type:Original Article
- Keywords:
A-scan;
Axial length;
Central macular thickness;
IOLMaster(R);
Vitrectomy
- MeSH:
Epiretinal Membrane;
Eye;
Humans;
Refractive Errors;
Retinal Perforations;
Vitrectomy
- From:Journal of the Korean Ophthalmological Society
2009;50(8):1226-1231
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the differences between IOLMaster(R) and A-scans in changes in axial length after vitrectomy in patients with macular disease. METHODS: Using IOLMaster(R) and A-scans, we measured preoperative and postoperative axial length in 12 eyes with epiretinal membranes (ERM) and in 8 eyes with macular holes (MH). The relationship between the absolute error in axial length after vitrectomy and both methods was assessed using Mann-Whitney U test. The correlation to central macular thickness was evaluated by Spearman's correlation coefficient. RESULTS: In eyes with ERM and MH, preoperative and postoperative axial lengths obtained with both methods had no significant difference (p>0.05). The absolute error in axial length after vitrectomy was not significant using IOLMaster(R) (ERM: 0.07+/-0.05 mm, MH: 0.04+/-0.02 mm, p>0.05) but was significant using A-scan (ERM: 0.20+/-0.11 mm, MH: 0.30+/-0.07 mm, p<0.05). The correlation between the change of axial length after vitrectomy and the central macular thickness was poor (IOLMaster(R): ERM; correlation coefficient = -0.182, p>0.05, MH; correlation coefficient = -0.054, p>0.05, A-scan: ERM; correlation coefficient = -0.210, p>0.05, MH; correlation coefficient = -0.156, p>0.05). CONCLUSIONS: The IOLMaster(R) is more useful than the A-scan when measuring axial length without refractive errors after vitrectomy in eyes with macular disease.
