Highlights •Short-term miniscleral contact lens wear significantly alters limbal radius and scleral elevation. •No corneal flattening was found as a consequence of short-term miniscleral contact lens wear. •Scleral flattening was not fully reversed 3 h after lens removal in majority of...
Introduction: The advent of high oxygen permeability (Dk) of rigid contact lens materials has reduced complications related to hypoxia when using scleral contact lenses (ScCLs). However, new issues and complications have emerged. Some of these issues and complications are caused by the nonoptimal fitting...
Highlights •The posterior corneal curvature after scleral lens wearing has never been studied. •A flattening curvature appears in nasal quadrant in intracorneal ring patients and in inferior hemisphere in keratoconus. •The cornea is slightly thinner after scleral lens wear except...
SIGNIFICANCE New bitangential mini-scleral lens designs provide a highly precise fit, follow the scleral shape, are comfortable to wear, and can correct residual astigmatism. This new scleral lens design complements the arsenal of medical contact lenses available to eye care practitioners....
SIGNIFICANCE The present study with small-diameter scleral lenses (SLs) revealed that post-lens tear thickness (PoLTT) was significantly associated with post-lens tear mixing, but not with central corneal edema, after short-term SL wear. PURPOSE The aim of this study was to investigate the...
Objectives: Debris accumulation in the postlens fluid reservoir during scleral lens wear is clinically observed. We evaluated a method to quantify increases in turbidity of the postlens fluid reservoir by assessing changes in optical density of the fluid over time and compared these changes during...
Abstract Purpose To develop a methodology to reliably determine the thickness profile of scleral contact lenses and examine the relationship between the centre and average lens thickness for a range of lens designs and back vertex powers. Methods High-resolution images...
Abstract Purpose To examine the magnitude and time course of central epithelial, stromal and total corneal thickness changes during sealed miniscleral contact lens wear and the influence of initial central corneal clearance upon these thickness changes. Methods High-resolution OCT images...
Objectives: To quantify tear elimination rate (ER) underneath silicone hydrogel (Si-Hy) and scleral gas permeable (GP) contact lenses (CLs). Methods: Subjects successfully using either well-fitting soft Si-Hy CLs or scleral GP CLs were recruited. Most scleral GP CL wearers had irregular corneas...
Abstract Purpose To summarize the research findings on the ocular surface profile, to provide a definition and a classification of the corneoscleral shape, and to offer guidelines in selecting scleral lens design. Methods The definition of rotational symmetry and rotational...
Purpose: To assess the correlation between the scleral shape and corneal astigmatism. Methods: Twenty-two participants (11 nonastigmatic and 11 astigmatic) aged from 19 to 36 years and with no previous ocular surgeries were included in this study. Three-dimensional (3D) corneoscleral maps from...
Tradotto e adattato da Review of Contact Lens–Related Complications Punti chiave La finalità di questo articolo di revisione è riassumere le complicanze associate all’utilizzo di lenti a contatto più frequentemente incontrate nella pratica clinica. Gli autori riportano inoltre alcuni principi di...
Purpose: To analyze the state of scientific publications in the field of scleral lenses applying a bibliometric study. Methods: The database used in this bibliometric study was SCOPUS, the largest abstract and citation database of peer-reviewed literature: scientific journals, books, and conference...
Objectives: To quantify tear elimination rate (ER) underneath silicone hydrogel (Si-Hy) and scleral gas permeable (GP) contact lenses (CLs). Methods: Subjects successfully using either well-fitting soft Si-Hy CLs or scleral GP CLs were recruited. Most scleral GP CL wearers had irregular corneas...
Objectives: To evaluate the success rate, efficacy, and safety of the ICD 16.5 mini-scleral gas permeable (GP) contact lens. Methods: This prospective study included referred consecutive patients with irregular corneas and severe ocular surface disease (OSD) in treatment failure. All patients were...
Abstract Purpose To report the on-eye breakage of a mini-scleral contact lens in a healthy cornea after being hit by a speeding object, without causing any severe corneal damage. Case report A 24-year-old Caucasian male involved in a clinical study...
Abstract Purpose To report a series of cases of Acanthamoeba keratitis (AK) in scleral lens wearers with keratoconus to determine whether this type of contact lens presents a greater risk for development of infection. Methods: This study reports three patients...
Highlights •At a 10 mm chord, sagittal height values reflect with-the-rule corneal astigmatism. •The ocular surface is relatively more symmetric at a 12.8 mm chord. •Sagittal height measurements at a 15 mm chord reveal a rotationally asymmetric shape. •Scleral sagittal height at a...
Objective: To evaluate the ocular surface temperature using an infrared thermography camera before and after wearing scleral lens in patients with keratoconus and correlate these results with the tear production and stability. Methods: A pilot, experimental, short-term study has been performed. Twenty-six...
Abstract Purpose: To investigate the success and failure rates of scleral lens correction in severe keratoconus. Design: Retrospective case series. Methods:Study population: Patients with keratoconus who attended the keratoconus clinic at the Antwerp University Hospital, Belgium between 01/01/2010 and 12/31/2014....
Highlights •True sclerals can be fitted with ease over intracorneal ring segments in keratoconus. •With adequate vault, there is no need to remove the intracorneal ring segments. •Fitting is similar to standard scleral lens fitting technique – keeping adequate vault...
Objective: To evaluate the factors affecting clinical outcomes of correcting cumulative refractive errors or irregular astigmatism after radial keratotomy (RK) using mini-scleral lenses. Methods: We retrospectively analyzed 36 eyes receiving mini-scleral lenses after RK from July 2011 to June 2016....
Purpose: To assess how varying degrees of corneal clearance of scleral contact lenses (ScCL) impact visual acuity (VA) and comfort in patients with corneal ectasia. Method: Three ScCL were fitted to 20 subjects with previous diagnosis of either keratoconus (n=18)...
Scleral lenses (ScLs) are rigid gas permeable devices that are supported partly by the conjunctival tissue overlying the sclera and partly by the tear reservoir (acting like a water bed), and vault the cornea and limbus [1]. Their major advantage...
Objective: To evaluate corneal biomechanical parameters wearing corneoscleral contact lenses (CScL) in patients with irregular corneas after laser in situ keratomileusis (LASIK). Methods: Data from patients fitted with CScL because of corneal surface irregularities after complicated LASIK surgery were selected...
http://onlinelibrary.wiley.com/doi/10.1111/opo.12380/full Abstract Purpose: The purpose of this study was to determine the change in over-refraction, if any, after a scleral lens settled on the eye for 6–8 h. Methods: Sixteen patients of varying refractive errors and normal corneal curvatures (measured...
http://journals.lww.com/optvissci/Abstract/2017/04000/Oxygen_Tension_Beneath_Scleral_Lenses_of_Different.6.aspx ABSTRACT Purpose. To evaluate the relative partial pressure in oxygen (pO2) at the corneal surface under Boston XO2 scleral lenses (SL) fitted with targeted clearances of 200 and 400 Km (SL200 and SL400). Methods. During this prospective study, the...
http://www.contactlensjournal.com/action/showFullTextImages?pii=S1367-0484%2817%2930142-X Autore Daddi Fadel, Dip Optom (It) Abstract The evolution of scleral lenses has led to new formulations of scleral fitting concepts and designs. The diameters of modern scleral lenses have been overhauled too and they are smaller comparing to...
http://www.contactlensjournal.com/article/S1367-0484(16)30140-0/fulltext?rss=yes Purpose A detailed evaluation of the corneo-scleral-profile (CSP) is of particular relevance in soft and scleral lenses fitting. The aim of this study was to use optical coherence tomography (OCT) to analyse the profile of the limbal sclera...
http://www.contactlensjournal.com/article/S1367-0484(17)30099-1/fulltext?rss=yes Surface coverage with single vs. multiple gaze surface topography to fit scleral lenses ABSTRACT Until very recently, scleral lens fitting has depended upon the use of a diagnostic fitting set utilizing a trial-and-error process. Scleral lens base curve selection...
Tollerabilità delle lenti sclerali dopo Cross-linking corneale nel cheratocono...
Corneal epithelial bullae after short-term wear of small diameter scleral lenses...
http://www.platform-optic.it/wp-content/uploads/2016/05/Professional_valutazione-del-decentramento-di-lenti-a-contatto-minisclerali-utilizzando-diversi-metodi-di-inserimento_Platform_Optic_aprile_2016.pdf...
http://journals.lww.com/optvissci/Pages/articleviewer.aspx?year=9000&issue=00000&article=98407&type=Abstract...
http://journals.lww.com/claojournal/Pages/articleviewer.aspx?year=9000&issue=00000&article=99382&type=Abstract...
Post-lens tear turbidity and visual quality after scleral lens wear (visualizza articolo) Come anticipato da Mauro Frisani durante la sua recente relazione al convegno SOPTI sul Cheratocono, a Mestre del 22 e 23 Gennaio 2017, è stato pubblicato il primo...
Convegno SOPTI 2017 : Cheratocono, Mestre 22 e 23 Gennaio 2017 (clicca per visualizzare Convegno) Lenti a contatto Sclerali e Minisclerali, Abstract relazione di Mauro Frisani (visualizza CV): Lenti a contatto Sclerali e Minisclerali nel cheratocono Le lenti a contatto sclerali e minisclerali, sono lenti che...
In questo lavoro andremo a visualizzare i risultati ottenuti con le nuove LAC morbide spessorate in Silicone Hidrogel (MS SiHi) in cornee irregolari. Storicamente la “soluzione” ottica elettiva in cornee cheratoconiche ed irregolari prevede l’uso di lenti a contatto RGP,...
è stato pubblicato proprio oggi un editoriale “Scleral contact lenses and hypoxia : Theory versus practice” (leggi abstract) Contiene anche una lettera che Irving Fatt scrisse nel 1994 a Donald Ezekiel. Chi sono costoro? Personaggi illustri per gli addetti ai lavori...
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