Case report of unilateral electric cataract with transmission electron microscopy image

Dear Sir,We hereby report a case of unilateral electric cataract with transmission electron microscopy（TEM）image.Ocular injuries induced by electricity can occur simultaneously or sequentially with the electric event,and occasionally occur later than the initial event.There are many ocular manifestations,with the most common one being

Factors influencing stereoacuity levels after surgery to correct unilateral developmental cataracts in children

·AIM: To evaluate factors influencing stereoacuity after surgery to correct unilateral developmental pediatric cataracts. ·METHODS: We retrospectively surveyed 110 patients who had undergone removal of unilateral acquired developmental cataracts and primary posterior chamber intraocular lens implantation between February 1992 and December 2009. In all patients, stereoacuity was assessed using the Titmus test at the last follow -up period of minimum 2 years after surgery. Patients were divided into two groups according to the extent of stereoacuity : group 1 ( = 42 ) had stereoacuity values ≤ 100sec/arc and group 2 ( =68) values 】100sec/arc. The values of ten parameters associated with stereoacuity were measured in each group: Cataract types, preoperative best corrected visual acuity (BCVA) of the affected eyes, preoperative inter -ocular difference of BCVA, age at cataract surgery, operative method, secondary cataract, postoperative strabismus, postoperative BCVA of the affected eyes, postoperative inter-ocular difference of BCVA, and anisometropia. ·RESULTS: The extent of stereoacuity was significantly associated with both operative method and secondary cataract ( =0.000 and =0.016, respectively). All patients in whom the posterior capsule was preserved, had poor stereoacuity 】100sec/arc. Significant correlations with the extent of stereoacuity were found with postoperative strabismus ( =0.048),postoperative BCVA of the affected eyes ( =0.002), anisometropia ( =0.034). ·CONCLUSION: Postoperative stereoacuity was better in patients who underwent either optic capture or anterior vitrectomy after posterior continuous curvilinear capsulorhexis, and who didn’t develop secondary cataracts or strabismus postoperatively. Furthermore, postoperative BCVA of the affected eyes, and anisometropia influenced the stereoacuity of the patients surgically treated for unilateral developmental pediatric cataracts. ·

Preoperative Characteristics of Ocular Biometry in Children with Unilateral Congenital Cataracts

The ocular biometry characteristics are clinically significant for children with unilateral congenital cataracts,but there is a lack of data analysis concerning the preoperative measurements.The axial length(AL),mean keratometry(Km),cor-neal astigmatism(CA),and the anterior chamber depth(ACD)from both eyes before cataract surgery were obtained from 205 patients(410 eyes,3-15 years of age)with unilateral congenital cataracts.In the congenital cataract eyes,shorter AL(22.44±1.52 mm vs.22.57±1.04 mm,p=0.036)and higher CA(-1.89±0.91 D vs.-1.24±0.67 D,p<0.001)were found,and no significant difference was found in the Km and the ACD measurements compared to the contralateral normal eyes.Females had shorter AL and shallower ACD compared to males.However,the Km and CA in the females were significantly larger than that in males.Shorter AL,larger Km,higher CA,and shallower ACD were also found in females who had a binocular axial difference(the value obtained by subtraction of the contralateral normal eye from the congenital cataract eye)that less than zero.The preoperative ocular biometry of shorter AL,larger Km,higher CA,and shallower ACD should be considered in females with unilateral congenital cataracts.The age and the binocular axial differences had a statistically significant correlation(r=-0.192,p=0.006).Therefore,changes in the binocular axial differences associated with aging may enhance the guidelines for intraocular lens selection and the management of congenital cataracts.