Biomedical subjects

L El Matri

Publications and source records attributed to L El Matri.

5 recordsLinked to original sources

PubMed2002

[Posttraumatic glaucoma].

INTRODUCTION: Ocular trauma is an important cause of blindness among young people. Injuries of the iridocorneal angle cause ocular hypertonia and postcontusive glaucoma. The purpose of this work is to study clinical and therapeutic particularities of postcontusive ocular hypertonia. METHODS: This is a retrospective study on 13 patients (12 men and 1 woman) with ocular hypertonia as a result of contusive trauma of the iridocorneal angle, with no hyphema or lens dislocation. Patients were 16 to 38 years old. RESULTS: Ocular hypertonia appeared between 1 week and 6 months after the trauma. The lesions involved were cyclodialysis (2 cases), angle recession (11 cases) and iridodialysis (2 cases). Ocular hypertonia was complicated in 6 cases by contusive glaucoma (as shown by optic disk examination and visual field exploration). The balancing of intraocular pressure was obtained by local treatment in only 9 cases and by trabeculectomy in 5 cases. DISCUSSION: The authors discuss the physiopathology, therapeutic particularities as well as the prognostics of contusive ocular hypertonia by iridocorneal angle damage. CONCLUSION: Screening for ocular hypertonia must be regular and systematic after ocular trauma involving lesion of the iridocorneal angle.

Adolescent↗

PubMed2002

[Corneal lesions caused by caterpillar hairs: four case studies].

Caterpillar hairs disseminated by the wind can cause serious ocular problems in humans. We present 4 cases of corneal lesions caused by caterpillar hairs. Intense functional signs observed in exposed subjects should bring this diagnosis to mind. The severity of this affection is due to the possibility of intraocular migration, even many years after the first accident. Treatment consists of removing the caterpillar hair associated with an antibiotic and local anti-inflammatory treatment.

Adult↗

PubMed2002

[Management of posteriorly dislocated lenses: a report on 18 cases].

The posterior dislocation of the lens is a relatively frequent complication of ocular trauma. Treatment is medical, surgical and optical. The authors present a retrospective study of 18 patients (18 eyes) operated between January 1990 and December 1999 for a posterior dislocation of the lens. The age of the patients varied from 9 to 60 years, with a mean of 46 years. The etiology of the dislocation was an eye contusion in 15 cases and spontaneous dislocation in 3 cases. Vitrectomy was performed in all the patients, followed by extraction of the lens using one of two methods Results were good in both groups, with a final visual acuity better than 1/10 in 11 cases out of 18. Complications were substantially fewer than when using old techniques and included 4 cases of hypertonia, 3 cases of corneal edema, 2 cases of retinal detachment, and 1 case of macular edema. All of these complications were treated medically and/or surgically. The authors discuss the advantages and disadvantages of all lens extraction techniques and the benefits of the use of perfluorocarbon liquid in the treatment of the dislocated lens.

Adolescent↗

PubMed2002

[Epidemiologic study of refractive errors in schoolchildren in socioeconomically deprived regions in Tunisia].

PURPOSE: This study's purpose was to estimate the prevalence of common refractive errors in schoolchildren in low socioeconomic regions in Tunisia and to assess their effect on school performance. MATERIAL AND METHODS: This was a cross-sectional study done from November 1999 to January 2000 within the context of health care screening campaigns carried out by volunteer ophthalmologists and opticians in low-end socioeconomic regions in Tunisia. The concerned population was schoolchildren living in the cities of Tunis and Tabarka (North), Kerkena (Center), and Tozeur (South). We examined a total of 708 children with a mean age of 11.9 +/-3.21 years (from 6 to 20 years) and a sex ratio of 0.84. A cycloplegic refraction examination was performed on all the children. Statistical analyses with the chi squared test and the Fisher exact test allowed us to calculate the prevalence of the refractive errors totally and separately as well as the distribution according to age, sex, and region. We also searched for a possible relation between refractive errors and academic failure. RESULTS: Among the 708 children, 57.2% [CI(95)=53.4-60] had refractive errors, of which 31.6% [CI(95)=28.2-35.2] were hyperopic, whereas 9.1% [CI(95)=7.1-11.5] were myopic. Astigmatism was found in 16.4% [CI(95)=13.7-19.3]. The prevalence of myopia was significantly higher after the age of fourteen. It increased significantly with age (P=0.0003). The prevalence of hyperopia was significantly higher between the ages of 8 and 11 (P=0.0004). Hyperopic astigmatism was significantly more frequent between 6 and 9 years of age (P=0.001). There was no significant difference regarding sex. However, the distribution of the refractive errors by region showed a significantly high level of myopia in Tunis, Kerkena, and Tozeur. This difference disappeared with increasing age. The study of the effect of these refractive errors on school performance of these children from poor areas showed a significant association between all types of refractive errors and academic failure, with an odds ratio of 2.13 for all types of refractive errors, 2.69 for hyperopia, 2.87 for myopia, and 2.73 for astigmatism. CONCLUSION: This study showed the prevalence of refractive errors in a poor population of schoolchildren and emphasized the importance of such examinations. The ability of a child to participate in the educational experience is at least partially dependent on good vision.

Adolescent↗

PubMed1998

Familial subepithelial corneal amyloidosis (gelatinous drop-like corneal dystrophy): exclusion of linkage to lactoferrin gene.

PURPOSE: Because corneal tissue with familial subepithelial corneal amyloidosis (FSCA; gelatinous drop-like dystrophy of the cornea) contains lactoferrin the possibility that the FSCA gene was the human lactoferrin (hLF) gene was investigated. Due to contradictory published information we also mapped the hLF gene. METHODS: We mapped the hLF gene using a genomic clone of the entire hLF gene as a probe by fluorescence in situ hybridization (FISH). Utilizing PCR primers that are specific to the hLF gene, we also mapped the hLF via radiation somatic cell hybrid analysis. Linkage of the FSCA gene to the hLF gene was evaluated by genetic linkage analysis using polymorphic markers within and in the vicinity of the hLF gene. RESULTS: The hLF gene mapped to the short arm of chromosome 3 at 3p21. Linkage analysis using polymorphic markers for hLF and haplotype analysis of the 3p21 loci indicates that the FSCA gene is not linked to the 3p21 locus. CONCLUSIONS: The gene for FSCA is not the hLF gene in these families.

Amyloidosis↗