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The analysis of predicted capsular bag diameter using modified model of capsule measuring ring in Asians
Author(s) -
Kim JinHyoung,
Lee Doh,
Cha YoungDong,
Oh SaeHoon,
Mah KiChoong,
Lee MooSuk
Publication year - 2008
Publication title -
clinical and experimental ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 1442-6404
DOI - 10.1111/j.1442-9071.2008.01726.x
Subject(s) - medicine , cataract surgery , intraocular lens , phacoemulsification , ophthalmology , prospective cohort study , surgery , visual acuity
A bstract Background: This study measured the capsular bag diameter (CBD) of Asian eyes using a modified capsular measuring ring (CMR) after cataract surgery, and identified preoperative predictive factors for postoperative CBD and the change of capsular bag diameter after surgery. Methods: This prospective study followed 25 eyes undergoing cataract surgery inserted with a CMR before intraocular lens (IOL) implantation at the Department of Ophthalmology, Ilsan Paik Hospital, Inje University, Republic of Korea. Axial length (AL), anterior chamber depth (ACD), lens thickness, corneal power and corneal size were measured preoperatively. CBD was calculated using the CMR in a dilated state at postoperative 1 day, 1 week, 1 month, 2 months, and 1 year. Results: AL ( R = 0.713) and ACD ( R = 0.402) were found to positively correlate with CBD at postoperative 1 week. AL ( P < 0.001) and ACD ( P = 0.046) were found to be predictors of CBD. The mean CBD gradually decreased to 11.30 ± 1.76 mm at 1 day, 10.86 ± 1.06 mm at 1 week, 10.23 ± 1.43 mm at 1 month, 9.88 ± 1.31 mm at 2 months, and 9.85 ± 1.43 mm at 1 year. Conclusion: CBD size could be determined using a CMR implanted during surgery. AL and ACD were predictors of postoperative CBD. Predicting CBD in this way may assist in selecting appropriately sized IOL, which will lead to improved visual quality after cataract surgery.