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Early cataract surgery in microcornea/microphthalmia eyes is essential to prevent amblyopia and improve visual outcomes, including stereopsis. However, despite recent advances in pediatric cataract microsurgical techniques, this surgery remains challenging owing to several intraoperative difficulties attributable to the crowded anterior segment in these small, soft, and poorly developed eyes with shallow anterior chambers, and poor pupillary dilation.
In this study the investigator aim to report on the changes in the anterior segment biometric characteristics after cataract extraction in eyes with microcornea/microphthalmia with congenital cataract.
Eyes with congenital cataract have usually small cornea due to developmental delay of the globe. Recognition of microcornea/microphthalmia may be important as a potential contributor to the development of aphakic glaucoma after cataract surgery. Biometrics characteristics of eyes with m/m before and after removal of the cataractous lens can justify the occurrence of postoperative complications, including glaucoma.
Aim of the study: to report on the changes in the anterior segment biometric characteristics after cataract extraction in eyes with microcornea/microphthalmia with congenital cataract.
Methods:
The study will be a prospective cohorte. Biometry of eligible eyes with congenital cataract in one or both eyes with horizontal cornea diameter less than 11mm and/or axial length less than 2standard deviation for age will be compare to otherwise normal eyes with congenital cataract before and after cataract extraction. The anterior segment biometric characteristics using ultrasound biomicroscopy to measure anterior chamber depth and angle.Cataract surgery will be conducted with or without intraocular lens implantation.Postoperative follow up will be scheduled at the first week and first month, third and sixth months
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| Measure | Description | Time Frame |
|---|---|---|
| Postoperative changes in the biometric characteristics of eyes at 3months | the anterior segment biometric characteristics will be assess using ultrasound biomicroscopy biomicroscopy | 3 months |
| Postoperative changes in the biometric characteristics of eyes at 6months | the anterior segment biometric characteristics will be assess using ultrasound biomicroscopy | 6 months |
| Measure | Description | Time Frame |
|---|---|---|
| Postoperative complications at 3 months | we will report occurence of postoperative complications | 3 months |
| Postoperative complications at 6months | we will report occurence of postoperative complications |
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Inclusion Criteria:
Exclusion Criteria:
1.Children presenting with congenital cataract associated with other ocular anomalies other than microcornea/microphthalmia
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All children between 3months and 7 years with congenital cataract without other ocular anomalies other than micornea/ microphthalmia; who will visit the pediatric ophthalmology clinic of Alexandria main University from july 2020 to january 2021.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Gloria Nshokano Simba, MBBch | Contact | 01123645112 | nshokanosim90@gmail.com | |
| nader L Bayoumi, Professor | Contact | 01005268758 | naderayoumi@yahoo.com |
| Name | Affiliation | Role |
|---|---|---|
| Gloria Nshokano Simba, MBBch | Alexandria University | Principal Investigator |
| Nader L Bayoumi, Professor | Alexandria University | Study Director |
| Nihal Mohamed Elshakankiri, Professor |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Faculty of Medecine | Recruiting | Alexandria | Alexandria/ Egypt | 21111 | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 26603400 | Background | Praveen MR, Vasavada AR, Shah SK, Khamar MB, Trivedi RH. Long-term postoperative outcomes after bilateral congenital cataract surgery in eyes with microphthalmos. J Cataract Refract Surg. 2015 Sep;41(9):1910-8. doi: 10.1016/j.jcrs.2015.10.005. | |
| 24061837 | Background | Ventura MC, Sampaio VV, Ventura BV, Ventura LO, Nose W. Congenital cataract surgery with intraocular lens implantation in microphthalmic eyes: visual outcomes and complications. Arq Bras Oftalmol. 2013 Jul-Aug;76(4):240-3. doi: 10.1590/s0004-27492013000400011. |
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| ID | Term |
|---|---|
| D008850 | Microphthalmos |
| ID | Term |
|---|---|
| D005124 | Eye Abnormalities |
| D005128 | Eye Diseases |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
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| 6 months |
| Alexandria University |
| Study Chair |
| 27334676 | Background | Wu X, Long E, Lin H, Liu Y. Prevalence and epidemiological characteristics of congenital cataract: a systematic review and meta-analysis. Sci Rep. 2016 Jun 23;6:28564. doi: 10.1038/srep28564. |
| 28220849 | Background | Chen D, Gong XH, Xie H, Zhu XN, Li J, Zhao YE. The long-term anterior segment configuration after pediatric cataract surgery and the association with secondary glaucoma. Sci Rep. 2017 Feb 21;7:43015. doi: 10.1038/srep43015. |
| 25592478 | Background | Prasad S, Ram J, Sukhija J, Pandav SS, Gupta PC. Cataract surgery in infants with microphthalmos. Graefes Arch Clin Exp Ophthalmol. 2015 May;253(5):739-43. doi: 10.1007/s00417-014-2908-8. Epub 2015 Jan 16. |
| 19781495 | Background | Khokhar SK, Dave V. Cataract surgery in infant eyes with microphthalmos. J Cataract Refract Surg. 2009 Oct;35(10):1844; author reply 1844-5. doi: 10.1016/j.jcrs.2009.05.040. No abstract available. |
| 19251147 | Background | Vasavada VA, Dixit NV, Ravat FA, Praveen MR, Shah SK, Vasavada V, Vasavada AR, Trivedi RH. Intraoperative performance and postoperative outcomes of cataract surgery in infant eyes with microphthalmos. J Cataract Refract Surg. 2009 Mar;35(3):519-28. doi: 10.1016/j.jcrs.2008.11.031. |
| 21140367 | Background | Filous A, Osmera J, Hlozanek M, Mahelkova G. Central corneal thickness in microphthalmic eyes with or without history of congenital cataract surgery. Eur J Ophthalmol. 2011 Jul-Aug;21(4):374-8. doi: 10.5301/EJO.2010.6090. |
| 17533105 | Background | Nishina S, Noda E, Azuma N. Outcome of early surgery for bilateral congenital cataracts in eyes with microcornea. Am J Ophthalmol. 2007 Aug;144(2):276-280. doi: 10.1016/j.ajo.2007.04.019. Epub 2007 May 29. |
| 19004499 | Background | Abouzeid H, Meire FM, Osman I, ElShakankiri N, Bolay S, Munier FL, Schorderet DF. A new locus for congenital cataract, microcornea, microphthalmia, and atypical iris coloboma maps to chromosome 2. Ophthalmology. 2009 Jan;116(1):154-162.e1. doi: 10.1016/j.ophtha.2008.08.044. Epub 2008 Nov 12. |
| 30559816 | Result | Majid S, Ateeq A, Bukari S, Hussain M. Outcomes of cataract surgery in Microophthalmia. Pak J Med Sci. 2018 Nov-Dec;34(6):1525-1528. doi: 10.12669/pjms.346.14622. |