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      Bilateral Iris Coloboma in an 11-Year-Old Child with Low Vision and High Intraocular Pressure: A Rare Case Report and Review of Literature

      case-report

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          Abstract

          Background

          Coloboma means curtailed in Greek language. It is mainly used when normal tissue of the eye or another organ is not present since birth. Coloboma is a congenital abnormality mainly caused by incomplete closure of the embryonic fissure of the choroid part of eye.

          Purpose

          The aim of this case report is to share the clinical findings in a patient with bilateral iris coloboma, low vision, and headache.

          Patients and Methods

          Case report.

          Results

          An eleven-year-old boy with low vision and headache visited the University Eye Hospital of Kabul University of Medical Science (UEHKUMS) for consultation. Ophthalmic examination revealed a bilateral iris coloboma without concomitant chorioretinal defect, refractive error, and high intraocular pressure in both eyes. The refractive error of the patient was corrected by advising proper glasses, and the high intraocular pressure was controlled by anti-glaucoma drops. After several follow-up visits, the patient no longer complained of headache and low vision.

          Conclusion

          Visiting patients with iris coloboma should be considered for intraocular pressure (IOP) check, and screening of other family members is mandatory.

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          Most cited references10

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          Chorioretinal coloboma in a paediatric population.

          O Uhumwangho, S Jalali (2014)
          To determine the validity of laser photocoagulation as a prophylactic treatment in the prevention of rhegmatogenous retinal detachment (RRD) in a group of paediatric patients presenting with chorioretinal coloboma.
          Article 0 comments Cited 13 times – based on 0 reviews     Review now
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            Malapposition of graft-host interface after penetrating keratoplasty (PK) and deep anterior lamellar keratoplasty (DALK): an optical coherence tomography study

            Yujin Zhao, Hong Zhuang, Jiaxu Hong … (2020)
            Backgroud Previous studies of internal graft-host malappositions have not dealt with the precise ways in which each malapposition affected post-penetrating keratoplasty (post-PK) visual outcomes. In this study, we reviewed our post-PK and post-deep anterior lamellar keratoplasty (post-DALK) keratoconic patients and used anterior segment optical coherence tomography (AS-OCT) to evaluate the associations between graft-host interface (GHI) characteristics and visual outcomes. Methods Novel GHI metrics included: mean graft-host touch (GHT), total prevalence of malapposition proportion (Pm), frequency of apposition (F), size of malapposition (Sm), junctional graft thickness (Tg), junctional host thickness (Th) and the absolute value of difference between Tg and Th (|Tg-Th|). We connected the external and internal junction points of GHI (GHT) and drew a straight line through the central point, perpendicular to both sides of the cornea. Tg and Th were the thicknesses at cross-points 1 mm away from the meeting point on the external side of the graft and host, respectively. Linear regression analysis was used to describe associations between GHI metrics and postsurgical visual outcomes [logarithm of minimum angle of resolution best-corrected visual acuity (logMAR BCVA), spherical equivalent diopter (SE), diopter of spherical power (DS), diopter of cylindrical power (DC) and keratometric astigmatism (Astig value)]. Results We enrolled 22 post-PK and 23 post-DALK keratoconic patients. Compared with the regular-apposition results, GHT was decreased in step and gape patterns, and increased in hill and tag patterns. SE increased averagely by 6.851, 5.428 and 5.164 diopter per 1% increase in: F (step) [β = 6.851; 95% Confidence interval (CI) = 2.975–10.727; P = 0.001]; F (graft step) [β = 5.428; 95% CI = 1.685–9.171; P = 0.005]; and Pm [β = 5.164; 95%CI = 0.913–9.146; P = 0.018], respectively. SE increased averagely by 0.31 diopter per 10-μm increment in |Tg-Th| [β = 0.031; 95% CI = 0.009–0.054; P = 0.007]. LogMAR BCVA increased (on average) by 0.01 per 10-μm increment in both GHT [β = 0.001; 95% CI = 0–0.002; P = 0.030]. and Tg [β = 0.001; 95% CI = 0.001–0.002; P = 0.001]. Astig value increased on average by 0.17 diopter per 10-μm increment in Sm [β = 0.017; 95% CI = 0–0.033; P = 0.047]. Conclusion This investigation of GHI characteristics suggests explanations for varied ametropia in keratoconic eyes and has potential significance as a reference for promoting pre-surgical planning and technology for corneal transplantation.
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              Subretinal neovascularization associated with retinochoroidal coloboma.

              Mangat Dogra, Meenakshi Gupta, Neha A Gupta (1997)
              Article 0 comments Cited 4 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): Int Med Case Rep J
                Journal ID (iso-abbrev): Int Med Case Rep J
                Journal ID (publisher-id): imcrj
                Title: International Medical Case Reports Journal
                Publisher: Dove
                ISSN (Electronic): 1179-142X
                Publication date (Electronic): 12 March 2024
                Publication date Collection: 2024
                Volume: 17
                Pages: 157-160
                Affiliations
                [1 ]Ophthalmology Department, Kabul University of Medical Science , Kabul, Afghanistan
                Author notes
                Correspondence: Tawfiq Ahmad Mushkani, Email tawfiqarashmushkani@gmail.com
                Author information
                http://orcid.org/0000-0002-5235-149X
                Article
                Publisher ID: 453954
                DOI: 10.2147/IMCRJ.S453954
                PMC ID: 10944301
                PubMed ID: 38495805
                SO-VID: 5021e252-5d5a-4115-92e5-154d1fcd8ef4
                Copyright © © 2024 Mushkani and Roheen.
                License:

                This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms ( https://www.dovepress.com/terms.php).

                History
                Date received : 12 January 2024
                Date accepted : 05 March 2024
                Page count
                Figures: 2, References: 11, Pages: 4
                Categories
                Subject: Case Report

                Keywords: iris coloboma,high intraocular pressure,bilateral
                Data availability:
                Keywords: iris coloboma, high intraocular pressure, bilateral

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