Comparison of the Postoperative Refractive Errors Measured by Ultrasound and Partial Coherence Interferometers after Phacovitrectomy
Journal of the Korean Ophthalmological Society
;
: 1059-1064, 2015.
Article
in Korean
| WPRIM
| ID: wpr-135168
ABSTRACT
PURPOSE:
To compare the accuracy of refractive outcome measured by Ultrascan(R) (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(R) and IOL Master(R) [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(R) was statistically longer than when measured using Ultrascan(R) (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(R) than Ultrascan(R) (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(R) and 0.07 +/- 0.54 with the Ultrascan(R).CONCLUSIONS:
Generally, IOL Master(R) is a more accurate method for calculating the IOL power prior to phacovitrectomy. However, in cases of vitreous hemorrhage, Ultrascan(R) appears superior to IOL Master(R) when calculating the IOL power.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Refractive Errors
/
Vitreous Hemorrhage
/
Retrospective Studies
/
Ultrasonography
/
Lenses, Intraocular
Type of study:
Diagnostic study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Ophthalmological Society
Year:
2015
Type:
Article
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