2006
DOI: 10.1136/bjo.2005.079988
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Pellucid marginal corneal degeneration: evaluation of the corneal surface and contact lens fitting

Abstract: Quantitative evaluation of videokeratographic data may help to diagnose PMCD and to distinguish PMCD from other ectatic corneal diseases. Contact lenses with a special back surface design can improve visual acuity and lens tolerance.

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Cited by 33 publications
(31 citation statements)
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“…16 Pellucid marginal degeneration and keratoconus differ markedly in the prognosis and management, and distinguishing between these 2 conditions is of potential clinical importance, especially in terms of contact-lens fitting and designing surgical management. 17,18 The aim of this study was to determine and compare various quantitative topographic and tomographic indices of PMD with keratoconus and normal corneas assessed by an Orbscan IIz scanning-slit topographer (Bausch & Lomb) and to formulate a reliable model to distinguish PMD corneas from keratoconus and normal corneas.…”
mentioning
confidence: 99%
“…16 Pellucid marginal degeneration and keratoconus differ markedly in the prognosis and management, and distinguishing between these 2 conditions is of potential clinical importance, especially in terms of contact-lens fitting and designing surgical management. 17,18 The aim of this study was to determine and compare various quantitative topographic and tomographic indices of PMD with keratoconus and normal corneas assessed by an Orbscan IIz scanning-slit topographer (Bausch & Lomb) and to formulate a reliable model to distinguish PMD corneas from keratoconus and normal corneas.…”
mentioning
confidence: 99%
“…A potential pitfall of relying on the ISD parameter is that conditions like the extremely rare superior keratoconus [26] or abnormalities on the horizontal midline such as pellucid marginal degeneration (PMD) might also escape detection if this index is used for screening [27]. Epithelial moulding arising from poorly fitted contact lenses might cause spurious inferior steep or SRAX patterns [28].…”
Section: Discussionmentioning
confidence: 98%
“…Negative Ecc values may be seen following keratoplasty. 21 Q value is an indicator of asphericity of the cornea. A spherical cornea has the same radius over the whole cornea.…”
Section: Discussionmentioning
confidence: 99%