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C Burillon

Publications and source records attributed to C Burillon.

62 records · Page 4Linked to original sources
PubMed1985

[Focus on an anatomoclinical entity: Biber-Haab-Dimmer lattice dystrophy].

The present study tries to point out new ideas about lattice corneal dystrophy. From our own observations we distinguish five clinical stages corresponding to each decade of life. We discuss the pathogenesis of the disease and the new histochemical and microscopical methods, and we emphasize on surgical treatment. In fact, surgery must be performed late in life and penetrating keratoplasty has become the treatment of choice. However, some authors describe recurrence of clinical signs of the dystrophy in penetrating grafts. In our study of thirty patients (between 1974 and 1984) including histopathologic evidences (66 procedures including 40 penetrating and 26 lamellar keratoplasties), did not find any single case of recurrence after penetrating keratoplasty.

Adult↗
PubMedDate not supplied

Oblique versus vertical-horizontal incision orientation in four-incision radial keratotomy.

BACKGROUND: Four-incision radial keratotomy is used for the correction of mild to moderate myopia. The traditional orientation of incisions was naturally on the horizontal and vertical meridians. We undertook a comparative study of oblique versus traditional four-incision radial keratotomy (orthogonal orientation) to show the advantage of an oblique incision orientation. METHODS: A prospective study of two groups of 21 eyes was conducted: an orthogonal group with vertical-horizontal orientation of the four incisions, and an oblique group with four obliquely oriented incisions. Spatial contrast sensitivity, glare, and night vision tests were performed and results compared. The follow up period was 3 months. RESULTS: Glare and contrast sensitivity were less affected with oblique orientation of incisions. There was no significant difference regarding night vision effects. We observed a decrease in induced astigmatism with oblique orientation. CONCLUSION: The location of horizontal incisions within the palpebral fissure and the unequal lengths of horizontal and vertical incisions are responsible for ocular alterations. An oblique orientation is preferable to avoid glare, starburst, and induced astigmatism.

Adult↗
PubMedDate not supplied

Complications of radial keratotomy: eyes with keratoconus and late wound dehiscence.

BACKGROUND: Radial keratotomy requires a thorough preoperative examination, including photokeratography, to detect early keratoconus. METHODS: We compared, by light and transmission electron microscopy, the healing process of corneas from two patients after radial keratotomy. RESULTS: Clinically, one patient had a keratoconus and gained no visual benefit from the radial keratotomy. The other patient had a spontaneous corneal perforation at one incision and a hypopyon. Histological studies showed a prolonged healing process in both eyes, with a persistent epithelial plug. Bowman's layer was also interrupted and retracted in both eyes. The inflamed cornea had deep neovascularization. CONCLUSIONS: These observations imply that 2 years after surgery, wound healing and, therefore, refraction is not stable. The results show the inappropriateness of radial keratotomy performed on eyes with keratoconus, with the possible risk of delayed corneal perforation.

Adult↗
PubMedDate not supplied

Combined epikeratoplasty and homoplastic keratophakia for correction of aphakia: double curve effect.

BACKGROUND: Having used the nonfreeze Barraquer-Krumeich-Swinger set for refractive lamellar keratoplasty since January 1987, the authors found the results of this procedure to be disappointing for correction of aphakia. Insufficient refractive gains for epikeratoplasty (+39% of initial refraction at 12-month follow up) persuaded the authors to look for a more effective refractive corneal surgery technique for correcting aphakia. METHODS: We describe a new technique consisting of the insertion of a plano-convex homoplastic donor cornea meniscus between the patient's cornea and a hypermetropic epikeratoplasty. A nonfreeze Barraquer-Krumeich-Swinger set was used to fashion the two donor lenticules. This double surgery, called the "double curve effect," because it uses two convex surfaces to increase the converging power of the cornea, has been performed in 15 eyes. RESULTS: We report the results of 10 eyes with a 6-month follow up. The average refractive gain was +11.75 D, 90% of the needed correction. But there was a loss of approximately 46% of best spectacle-corrected visual acuity. CONCLUSION: Three problems should be emphasized: the existence of two interfaces, the difficulty of perfectly centering the two lenticules, and the induced irregular astigmatism. Despite these problems which can reduce the level of best spectacle-corrected visual acuity, the double curve effect may offer an effective solution for treating certain cases of unilateral aphakia.

Adult↗