Olivier Richoz

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To the Editor: Berra et al recently published an in vivo experimental study of corneal collagen cross-linking (CXL) on Acanthamoeba keratitis. The authors analyzed the effects of CXL in rabbit corneas infected by stromal injection of 0.05 mL Acanthamoeba-containing suspension (40% trophozoites/60% cysts). On the basis of the analysis of corneal parasite(More)
Keratoconus is a disease of the cornea that usually begins during puberty and progressively weakens its biomechanical structure. Keratoconic eyes show a conic shape and progressive thinning, both leading to irregular astigmatism and reduced vision that cannot be corrected by glasses. In early cases, special contact lens can partly compensate for the visual(More)
PURPOSE To evaluate staged combined treatment for keratoconus with intrastromal corneal ring segment (ICRS) implantation followed by corneal collagen crosslinking (CXL) with riboflavin-ultraviolet-A (UVA) and then toric implantable collagen copolymer phakic intraocular lens (pIOL) implantation. SETTING Large private ophthalmic hospital system. DESIGN(More)
CASE REPORT A 44-year-old man in good general health presented with a 1-week history of deepseated, moderate right eye pain without exacerbation on eye movement. Ophthalmologic examination showed visual acuity of 20/20 in both eyes, equal pupils with normal pupillary reflexes, mild right upper lid ptosis known to the patient for more than 5 years, and(More)
PURPOSE To report the use of accelerated photoactivated chromophore for keratitis-corneal collagen cross-linking (PACK-CXL) as a first-line treatment in a patient with an atypical fungal keratitis. METHODS Case report and literature review. RESULTS A patient who presented with a painful peripheral corneal infiltrate underwent PACK-CXL with a local(More)
The objective of this study was to analyse the failure mode of adhesive interfaces by comparing OCT and scanning electron microscope (SEM) analysis of class V restoration margins located on enamel and dentin. Three groups were tested that differed in the application of a 3-step etch-and-rinse adhesive system (OptiBond FL) prior to cavity filling with(More)
PURPOSE To report the long-term clinical outcome in a patient diagnosed as having bilateral progressive keratoconus who received a single corneal collagen cross-linking (CXL) treatment in the right eye and repeated CXL in the left eye. METHODS Observational case report. Topographical changes were assessed by high-resolution Scheimpflug imaging. The right(More)