الفهرس 
Congenital cataractOnly 14 pages are availabe for public view
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Abstract
A comparative study of two different techniques of intraocular lens implantation in pediatric cataract
Zafer F. Ismail, Amr S. Galal, Akmal A. Rizk, Mohamed G. M. Aly, Nervine M. El Meshad
Department of ophthalmology Ain Shams University
Corresponding author:
Nervine Mohamed El Meshad
Telephone: 01006678677 E mail: dr.n.meshad@gmail.com
Abstract
Background: Childhood cataract blindness presents an enormous challenge to developing countries in terms of human morbidity, economic loss, and social liability. The management of childhood cataract requires special considerations especially with regard to intraocular lens (IOL) implantation. Choosing an appropriate IOL power is not a straight forward decision as future growth of the eye affects the axial length and keratometry readings which may result in an unexpected refractive error as children age.
The aim of this work: The present study was conducted to accurately calculate the predictability regarding IOL power calculation and post-operative refraction in pediatric cataract with two different techniques of IOL implantation.
Patient and method: This study consisted of 40 eyes of 38 patients who successfully underwent cataract surgery and intraocular lens implantations. Age ranged from 1 to 16 years old. The predicted postoperative refraction is based on the patient’s axial length and Keratometric readings and is aimed for Hypermetropia or Emmetropia. The postoperative refractive outcome was taken as the spherical equivalent, degree of astigmatism and its axis at (6-24months) postoperative follow-up. The data were analyzed to compare the mean prediction error and the
accuracy of predictability of intraocular lens power calculation using reduction protocol
Results: Mean biometry was 25.33± 3.56 SD and the chosen IOL power was 21.63± 3.97 SD. Results were statistically significant (P value <0.001). Post-operative spherical equivalent values showed mean value of 3.21± 1.83 SD in early postoperative follow up however late postoperative follow up showed mean value of 3.25 ± 1.14 SD at 24 months. Results showed no statistically significant difference between early spherical equivalent (6 months) and late spherical equivalent (24 months) of postoperative refraction.
Conclusion: The protocol used in IOL power calculation with reduction according to age has produced minimal myopic shift and was useful in avoiding myopic shift pediatric patients. Astigmatic error seen suggests that early removal of sutures aids in the avoidance of high against the rule astigmatic errors.