Fitting Gas Permeable Contact Lens in Keratoconus; Still a Challenge?

Ortiz-Toquero, Sara; Martín, Raúl

doi:10.17140/ooj-2-e004

Cited by 1 publication

(1 citation statement)

References 18 publications

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“…40,41,[46][47][48][49] Using these software could decrease the number of diagnostic lenses necessary to achieve an acceptable CL fit and reduce the chair time in keratoconus patients. 10,40,41,46 Although, corneal topography is probably the most commonly used tool for the diagnosis of keratoconus, it is accepted that this technique may lead to false negatives in the subclinical phase. That means that Placidobased videokeratographers cannot identify very mild forms of keratoconus (fruste keratoconus) that would require to be identified, assessing corneal thickness and anterior/posterior curvature measurements over the entire cornea provided with corneal tomography.…”

Section: A B Review Corneal Disordersmentioning

confidence: 99%

Keratoconus Screening in Primary Eye Care – A General Overview

Ortiz-Toquero¹,

Martín²

2016

European Ophthalmic Review

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Keratoconus early detection (screening) and diagnosis requires an in-deep corneal analysis with different techniques; slip lamp assessment, corneal topography and corneal tomography are the most commonly accepted to detect clinical signs and assess anterior and posterior corneal surface and global corneal pachymetry. However, keratoconus early detection and definitive diagnosis are two different clinical procedures that require a different approach and goals. The aim of this review is to provide some general information about different corneal assessment technology, useful in keratoconus patient assessment; highlighting the differences in the adequate investigation techniques to its detection in primary eye care clinic and to conduct the definitive diagnosis (usually in a cornea specialist clinic). Information of most extensively available commercial devices and the advantages and disadvantages of their use in keratoconus early detection and diagnosis are described. In conclusion, corneal topography (Placido-based keratographers) plays a significant role in keratoconus detection, especially in primary eye care clinics. However, corneal tomography (with different slit scanning and/or rotational imaging devices) including posterior corneal surface assessment and global corneal pachymetry investigation, is critical in definitive keratoconus diagnosis.

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