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Background Dense congenital cataracts often cause severe visual impairment.The results of long-term follow-up ofdense bilateral congenital cataract in China have not been well documented.The purpose of this study was to evaluatethe long-term visual function in children who underwent cataract extraction for dense bilateral congenital cataract insouthern part of China.Methods Medical records of children who underwent surgery of dense bilateral congenital cataract between January1992 and December 2000 at Zhongshan Ophthalmic Center of Sun Yat-sen University were retroactively reviewed.In 38children available for current follow-up,best corrected visual acuity(BCVA)and stereoscopic vision,as well asnystagmus,strabismus,and other complications,were evaluated.The mean follow-up period was 107.6 months(range60 to 167 months).Results The mean age of cataract extraction and secondary intraocular lens implantation were 5.6 months(range 3 to12 months)and 4.2 years(range 2.4 to 15 years),respectively.The mean BCVA was 0.25 in the better eye and 0.16 inthe fellow eye.Stereoscopic vision was absent in all patients,and 3 children had simultaneous perception.Nystagmuswas detected in all cases and strabismus in 35 cases.A high correlation was found between timing of cataract extractionand final BCVA of the better eye(r=-0.55,P=0.00).A statistically significant difference was found in BCVA between post-and pre-treatment of amblyopia(t=5.65,P=0.00).Conclusions Long-term visual function in children with dense bilateral congenital cataract was poor when cataractsurgery was performed at age of 3 months or later.Earlier cataract surgery with adequate optical rehabilitationcontributed to better visual outcome.Chin Med J 2007;120(17):1494-1497
Background Dense congenital cataracts often cause severe visual impairment. The results of long-term follow-up ofdense bilateral congenital cataract in China have not been well documented. The purpose of this study was to evaluate the long-term visual function in children who underwent cataract extraction. for dense bilateral congenital cataract insouthern part of China. Methods Medical records of children who underwent surgery of dense bilateral congenital cataract between January 1992 and December 2000 at Zhongshan Ophthalmic Center of Sun Yat-sen University were retroactively reviewed. In 38 children available for current follow-up , best corrected visual acuity (BCVA) and stereoscopic vision, as well asnystagmus, strabismus, and other complications, were were. The mean follow-up period was 107.6 months (range60 to 167 months). Results The mean age of cataract extraction and secondary intraocular lens implantation were 5.6 months (range 3 to 12 months) and 4.2 years (range 2.4 to 15 years), respective ly. The mean BCVA was 0.25 in the better eye and 0.16 inthe fellow eye. Stereoscopic vision was absent in all patients, and 3 children had simultaneous perception. Nystagmus was detected in all cases and strabismus in 35 cases. A high correlation was found between timing A significant significant difference was found in BCVA between post-and pre-treatment of amblyopia (t = 5.65, P = 0.00) .Conclusions Long- term visual function in children with dense bilateral congenital cataract was poor when cataractsurgery was performed at age of 3 months or later. Earlier cataract surgery with adequate optical rehabilitation consistent to better visual outcome. Chin Med J 2007; 120 (17): 1494-1497