Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports

Abstract Background To report three cases of congenital corneal opacity where intraocular pressure (IOP) readings were high despite the use of multiple anti-glaucoma eye drops and normalized after corneal transplantation. Case presentation Three Korean infants presented with bilateral dense stromal...

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Main Authors: Byeong Soo Kang, Jin Wook Jeoung, Joo Youn Oh
Format: Article
Language:English
Published: BMC 2020-01-01
Series:BMC Ophthalmology
Subjects:
Online Access:https://doi.org/10.1186/s12886-019-1287-7
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author Byeong Soo Kang
Jin Wook Jeoung
Joo Youn Oh
author_facet Byeong Soo Kang
Jin Wook Jeoung
Joo Youn Oh
author_sort Byeong Soo Kang
collection DOAJ
description Abstract Background To report three cases of congenital corneal opacity where intraocular pressure (IOP) readings were high despite the use of multiple anti-glaucoma eye drops and normalized after corneal transplantation. Case presentation Three Korean infants presented with bilateral dense stromal opacification which had been present since birth. IOPs measured by rebound tonometer were high despite administration of multiple anti-glaucoma medications. One eye of each patient underwent penetrating keratoplasty (PK) because corneal opacity impaired visual development. Immediately after PK, IOPs were normalized and maintained normal without medication, whereas they remained high in the contralateral unoperated eye. On histology, stromal fibrosis was observed in the removed corneal button, and molecular assays revealed increased levels of type 1 and 5 collagens. Conclusion The IOP measurement using the conventional applanation-based tonometry can be inaccurate in congenital corneal opacity which is marked by corneal fibrosis. Therefore, IOP values should be interpreted with caution in these patients, and the possibility of false-positive diagnosis of glaucoma considered.
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spelling doaj.art-b332ddd3997e4f09bcf3acebd3a913962022-12-21T22:02:38ZengBMCBMC Ophthalmology1471-24152020-01-012011510.1186/s12886-019-1287-7Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reportsByeong Soo Kang0Jin Wook Jeoung1Joo Youn Oh2Department of Ophthalmology, Seoul National University College of MedicineDepartment of Ophthalmology, Seoul National University College of MedicineDepartment of Ophthalmology, Seoul National University College of MedicineAbstract Background To report three cases of congenital corneal opacity where intraocular pressure (IOP) readings were high despite the use of multiple anti-glaucoma eye drops and normalized after corneal transplantation. Case presentation Three Korean infants presented with bilateral dense stromal opacification which had been present since birth. IOPs measured by rebound tonometer were high despite administration of multiple anti-glaucoma medications. One eye of each patient underwent penetrating keratoplasty (PK) because corneal opacity impaired visual development. Immediately after PK, IOPs were normalized and maintained normal without medication, whereas they remained high in the contralateral unoperated eye. On histology, stromal fibrosis was observed in the removed corneal button, and molecular assays revealed increased levels of type 1 and 5 collagens. Conclusion The IOP measurement using the conventional applanation-based tonometry can be inaccurate in congenital corneal opacity which is marked by corneal fibrosis. Therefore, IOP values should be interpreted with caution in these patients, and the possibility of false-positive diagnosis of glaucoma considered.https://doi.org/10.1186/s12886-019-1287-7Applanation-based tonometryCase reportCongenital corneal opacityCongenital glaucomaIntraocular pressure
spellingShingle Byeong Soo Kang
Jin Wook Jeoung
Joo Youn Oh
Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
BMC Ophthalmology
Applanation-based tonometry
Case report
Congenital corneal opacity
Congenital glaucoma
Intraocular pressure
title Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
title_full Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
title_fullStr Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
title_full_unstemmed Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
title_short Inaccuracy of intraocular pressure measurement in congenital corneal opacity: three case reports
title_sort inaccuracy of intraocular pressure measurement in congenital corneal opacity three case reports
topic Applanation-based tonometry
Case report
Congenital corneal opacity
Congenital glaucoma
Intraocular pressure
url https://doi.org/10.1186/s12886-019-1287-7
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