The Effect of Optic Asphericity on Visual Rehabilitation of Corneal Ectasia With a Prosthetic Device

Hussoin, Trisha; Le, Hong-Gam; Carrasquillo, Karen G.; Johns, Lynette; Rosenthal, Perry; Jacobs, Deborah S.

doi:10.1097/icl.0b013e3182657da5

Cited by 24 publications

(24 citation statements)

References 25 publications

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“…ScCL also offer very stable platforms for fine adjustment of design to improve visual quality. This was the approach in a recent case report of a keratoconus patient in whom the authors observed a visual improvement related to a decrease in higher order aberrations by adjusting the front surface eccentricity of the lens [44,45]. More sophisticated compensation of higher order aberrations might be possible with contact lenses, although decentration and movement are usually a limitation [46].…”

Section: Vision Improvementmentioning

confidence: 99%

Modern scleral contact lenses: A review

Worp

Bornman

Lopes-Ferreira

et al. 2014

Contact Lens and Anterior Eye

195

148

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Scleral contact lenses (ScCL) have gained renewed interest during the last decade. Originally, they were primarily used for severely compromised eyes. Corneal ectasia and exposure conditions were the primary indications. However, the indication range of ScCL in contact lens practices seems to be expanding, and it now increasingly includes less severe and even non-compromised eyes, too. All lenses that partly or entirely rest on the sclera are included under the name ScCL in this paper; although the Scleral Lens Education Society recommends further classification. When a lens partly rests on the cornea (centrally or peripherally) and partly on the sclera, it is called a corneo-scleral lens. A lens that rests entirely on the sclera is classified as a scleral lens (up to 25 mm in diameter maximum). When there is full bearing on the sclera, further distinctions of the scleral lens group include mini-scleral and large-scleral lenses. This manuscript presents a review of the current applications of different ScCL (all types), their fitting methods, and their clinical outcomes including potential adverse events. Adverse events with these lenses are rare, but the clinician needs to be aware of them to avoid further damage in eyes that often are already compromised. The use of scleral lenses for non-pathological eyes is discussed in this paper.

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Section: Vision Improvementmentioning

confidence: 99%

Modern scleral contact lenses: A review

Worp

Bornman

Lopes-Ferreira

et al. 2014

Contact Lens and Anterior Eye

195

148

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“… 31 PROSE with 0.6 and 0.8 FSE can improve vision in patients with advanced keratoconus. 14 Hussoin et al have proposed various mechanisms for the role of FSE. FSE may compensate for aberrations from the posterior surface, this may compensate for poor alignment of the optical axis of patient and of the lens, and this eccentricity may restore prolate surface thus improving vision.…”

Section: Manufacturing Of Scleral Lensesmentioning

confidence: 99%

“…FSE may compensate for aberrations from the posterior surface, this may compensate for poor alignment of the optical axis of patient and of the lens, and this eccentricity may restore prolate surface thus improving vision. 14 …”

Section: Manufacturing Of Scleral Lensesmentioning

confidence: 99%

“… 11 , 17 , 36 These lenses have an added feature of FSE which improves vision even in advanced keratoconus. 14 …”

Section: Manufacturing Of Scleral Lensesmentioning

confidence: 99%

“…In keratoconus, the presence of higher-order aberrations reduces visual acuity; this can be improved further by adding front surface eccentricity (FSE) or toricity or wave front aberrations correction to spherical scleral lens. 14 This review talks about the technology update in the field of ScCL that has improved the use of the lenses for patients with keratoconus with the aim of improving visual acuity and achieving a comfortable fitting without compromising the ocular surface. These advances are in lens materials, designs, manufacturing of these lenses, improved on-eye fitting techniques, and a better understanding of keratoconus per se.…”

Section: Introductionmentioning

confidence: 99%

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Scleral lens for keratoconus: technology update

Rathi¹,

Mandathara²,

Taneja³

et al. 2015

OPTH

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Scleral lenses are large diameter lenses which rest over the sclera, unlike the conventional contact lenses which rest on the cornea. These lenses are fitted to not touch the cornea and there is a space created between the cornea and the lens. These lenses are inserted in the eyes after filling with sterile isotonic fluid. Generally, scleral contact lenses are used for high irregular astigmatism as seen in various corneal ectatic diseases such as keratoconus, pellucid marginal degeneration, or/and as liquid bandage in ocular surface disorders. In this article, we review the new developments, that have taken place over the years, in the field of scleral contact lenses as regard to new designs, materials, manufacturing technologies, and fitting strategies particularly for keratoconus.

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