The link between Keratoconus and posterior segment parameters:An updated, comprehensive review


Keratoconus (KCN) has been typically known as a disorder with effects limited to the cornea. Because of this viewpoint, less attention has been devoted to its effects on the posterior segment structures. We aimed to provide a comprehensive review of the literature to understand the potential link between KCN and posterior segment structures and their functions. It is clear from the extensive evidence in the literature that KCN can be associated with morphological and functional changes in different parts of the posterior segment. It is worth noting that anatomical changes have been not only noted in several layers of the retina but also in the optic nerve head and the choroid. Several mechanisms have been proposed to explain this observation, including incidents induced by oxidative stress in keratoconic corneas and retinal adaptions to the distorted image that lands on the retina. Consequently, when KCN has been diagnosed, it seems practical to consider assessing the retinal and choroidal profile using optical coherence tomography and potentially functional abnormalities through electrophysiology procedures.

Publication DOI:
Divisions: College of Health & Life Sciences > School of Optometry > Optometry
College of Health & Life Sciences > School of Optometry > Optometry & Vision Science Research Group (OVSRG)
College of Health & Life Sciences > School of Optometry > Vision, Hearing and Language
College of Health & Life Sciences
Additional Information: © 2021, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Uncontrolled Keywords: Choroid,Keratoconus,Optic nerve head,Posterior segment,Retina,Ophthalmology
Publication ISSN: 1937-5913
Last Modified: 22 May 2024 07:18
Date Deposited: 20 Dec 2021 11:06
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.sci ... 1439?via%3Dihub (Publisher URL)
PURE Output Type: Review article
Published Date: 2022-01
Published Online Date: 2021-12-08
Accepted Date: 2021-12-06
Authors: Hashemi, Hassan
Heirani, Mohsen
Ambrósio, Renato
Hafezi, Farhad
Naroo, Shehzad A. (ORCID Profile 0000-0002-6373-7187)
Khorrami-Nejad, Masoud

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