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مقاله
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Abstract
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Title:
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Biometric Changes after Trabeculectomy with Contact and Non-contact Biometry
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Author(s):
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Mohammad Pakravan, MD; Azam Alvani, MSc; Hamed Esfandiari, MD; Mehdi Yaseri, phD; Shahin Yazdani, MD; Elham Ghahari, MD
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Presentation Type:
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Oral
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Subject:
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Glaucoma
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Others:
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Presenting Author:
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Name:
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Azam Alvani
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Affiliation :(optional)
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Ophthalmic Epidemiology Research Center, Shahid Beheshti University of Medical Sciences
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E mail:
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alvani63@gmail.com
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Phone:
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Mobile:
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09166909511
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Purpose:
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To compare biometric changes after mitomycin-C augmented trabeculectomy measured with contact and non-contact methods.
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Methods:
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Thirty-one eyes of 31 glaucoma patients scheduled for primary trabeculectomy were enrolled. Biometric parameters including axial length (AL), anterior chamber depth (ACD) and lens thickness (LT) were measured with contact ultrasound biometry and non-contact optical biometry device, on the day before trabeculectomy and compared to those obtained 3 and 6 months after the surgery.
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Results:
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The AL and ACD were significantly decreased at month 3 and month 6 compared to baseline values with both biometry methods. There was a significant increase in LT measured by Lenstar device at 3 and 6 months follow-ups. At both 3rd and 6th month of follow-up, the mean AL reduction in measurement with Lenstar device was significantly lower than that of A-scan ultrasound. Mean ACD changes between two devices were not significantly different.
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Conclusion:
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The amount of AL reduction is significantly smaller with non-contact method, making it the preferable method for intraocular lens power calculation in cases who need cataract surgery combined or after trabeculectomy. The LT measured by Lenstar device was increased significantly after the operation, which can be an early sign for progression of catarctous changes after trabeculectomy.
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Attachment:
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