[Is ophthalmologic screening essential during alpha interferon treatment?].
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Aged↗
Biomedical subjects
J Chapard
Publications and source records attributed to J Chapard.
[Accidental laser burn].
A student suffered an accidental parafoveal laser burn during a physics experiment. We discuss here the clinical features and management and follow-up. This case presents a good example of photic injuries which can occur in many different settings.
Accidents↗
[Persistence of a functional hyaloid artery in an adult. Apropos of a case].
We report a case of a persistent hyaloid artery in a 69 year old man. The exam of the right eye and the anterior segment of the left eye disclosed a mild cataract. Fundus examination of the left eye revealed a persistent hyaloid artery emerging from the optic disc, surrounded by primary vitreous on its anterior end, inserting on the nasal pre equatorial retina. Macular ectopia and sectorial chorioretinal atrophy were also present. Fluorescein angiography disclosed a permeable and tight hyaloid artery. There were no macular or optic nerve anomalies precluding visual acuity. After phakoemulsification, the patient regained a visual acuity of 0.9 on the left eye.
Adult↗
[Is corneal thickness measurement reliable and useful?].
PURPOSE: We evaluated the accuracy and the reproducibility of central corneal thickness measurements using an ultrasound pachymeter, and its usefulness in clinical practice. METHODS: We calculated the intra-observer, inter-observer, and inter-session variability in control subjects (n = 38). We observed the diurnal variation (n = 8) and the role of surgery (n = 12) on central corneal thickness. We measured and compared central corneal thickness and intraocular pressure in 6 groups (control subjects n = 134, primary open-angle glaucoma n = 111, ocular hypertension n = 66, normal tension glaucoma n = 12, diabetes mellitus n = 62, corneal graft n = 27). We studied the influence of dorzolamide on central corneal thickness (n = 16). RESULTS: The intra-observer variability was 9 +/- 4 microns, whereas the inter-observer and inter-session variabilities were 4 microns and 5% m respectively. The central corneal thickness in patients with ocular hypertension (587 +/- 41 microns) was significantly greater than control subjects (548 +/- 32 microns) and all the other groups (p < 0.001). No influence of dorzolamide was observed on central corneal thickness. CONCLUSION: Central corneal thickness assessed with an ultrasound pachymeter may be a useful and accurate method in selected patients whose intraocular pressure measurement does not correlate with other clinical findings.
Adolescent↗