Comparison of intraocular lens power calculation using a standard ultrasonic biometer and a new optical biometer
AIM:To compare the intraocular lens(IOL)power calculations and refractive outcomes obtained with a new optical biometer and standard ultrasonic biometer in phacoemulsification surgery.<p>METHODS:Thirty-seven eyes of 37 cataract patients who underwent phacoemulsification with IOL implantation w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Press of International Journal of Ophthalmology (IJO PRESS)
2016-05-01
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| Series: | Guoji Yanke Zazhi |
| Subjects: | |
| Online Access: | http://ies.ijo.cn/cn_publish/2016/5/201605004.pdf |
| Summary: | AIM:To compare the intraocular lens(IOL)power calculations and refractive outcomes obtained with a new optical biometer and standard ultrasonic biometer in phacoemulsification surgery.<p>METHODS:Thirty-seven eyes of 37 cataract patients who underwent phacoemulsification with IOL implantation were included in this prospective comparative study. The same operator performed biometer measurements in eyes with cataract using a new optical biometer(Aladdin)and a standard ultrasonic biometer(Sonomed AB 5500). Biometric parameters; axial length(AL), keratometric(K)readings, anterior chamber depth(ACD)and IOL power obtained by two devices were recorded. Postoperative actual refractive errors and errors predicted by two devices according to SRK/T formula were analyzed. The mean estimation error(EE), mean absolute estimation error(AEE)and the biometric parameters obtained by two biometers were compared.<p>RESULTS:The AL measured by Aladdin(23.45±0.73 mm)was significantly longer than AL by ultrasonic biometer(23.2±0.75 mm)(<i>P</i>=0.01). The mean EE and AEE values obtained by Aladdin were significantly smaller than the values by ultrasonic biometer(<i>P</i>=0.0006 and 0.03 respectively). The higher percentage of eyes within ±0.5 and ±1.00 D of target refraction was also found by using Aladdin(67% and 97%).<p>CONCLUSION:The Aladdin optical biometer showed better accuracy and yielded better refractive outcomes compared with ultrasonic biometer. |
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| ISSN: | 1672-5123 1672-5123 |