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Biomedical subjects

B Biedner

Publications and source records attributed to B Biedner.

At least 19 recordsLinked to original sources
PubMed1998

A new computer program for mass screening of visual defects in preschool children.

AIMS: To test the effectiveness of a PC computer program for detecting vision disorders which could be used by non-trained personnel, and to determine the prevalence of visual impairment in a sample population of preschool children in the city of Beer-Sheba, Israel. METHODS: 292 preschool children, aged 4-6 years, were examined in the kindergarten setting, using the computer system and "gold standard" tests. Visual acuity and stereopsis were tested and compared using Snellen type symbol charts and random dot stereograms respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and kappa test were evaluated. A computer pseudo Worth four dot test was also performed but could not be compared with the standard Worth four dot test owing to the inability of many children to count. RESULTS: Agreement between computer and gold standard tests was 83% and 97.3% for visual acuity and stereopsis respectively. The sensitivity of the computer stereogram was only 50%, but it had a specificity of 98.9%, whereas the sensitivity and specificity of the visual acuity test were 81.5% and 83% respectively. The positive predictive value of both tests was about 63%. 27.7% of children tested had a visual acuity of 6/12 or less and stereopsis was absent in 28% using standard tests. Impairment of fusion was found in 5% of children using the computer pseudo Worth four dot test. CONCLUSIONS: The computer program was found to be stimulating, rapid, and easy to perform. The wide availability of computers in schools and at home allow it to be used as an additional screening tool by non-trained personnel, such as teachers and parents, but it is not a replacement for standard testing.

Child↗
PubMed1997

[Penetrating ocular injuries: an epidemiologic and retrospective study].

Penetrating injuries of the eye are an important cause of unilateral visual loss. We studied a series of 82 cases of penetrating injuries treated here from 1987 through 1993. The injuries were caused by sharp objects in 66% and blunt trauma in 6%. The prognosis after a penetrating injury is greatly influenced by the nature of the injury and the extent of the initial drainage. Among factors associated with an unfavorable visual outcome were diminished preoperative visual acuity and scleral wounds with dense vitreous hemorrhage.

Adolescent↗
PubMed1996

Werner's syndrome.

Explore the source record for details and available documents.

Cataract Extraction↗
PubMed1996

Conjunctival closure in strabismus surgery: Vicryl versus fibrin glue.

Six patients undergoing bilateral symmetric strabismus surgery were enrolled in this study. For each subject, incisions were closed with Vicryl in one eye and glue in the other. The conjunctival closure with the Vicryl suture resulted in increased discomfort and inflammation during the early postoperative period compared with fibrin glue. However, the difference between the Vicryl and the glue disappeared after 14 days.

Conjunctiva↗
PubMed1995

[Retinopathy and serum uric acid in diabetics].

Low serum uric acid (UA) levels have been reported in diabetics. In a group followed for 15 years it was reported that low UA levels preceded the onset of diabetic retinopathy. We studied 95 consecutive diabetic clinic patients between July and September 1992. There was no significant difference in UA levels between those with or without retinopathy: 5.0 +/- 1.2 (SD) mg--vs. 5.3 +/- 1.3, respectively. Multiple regression analysis showed that higher UA levels were related independently to high body mass index (overweight, obesity), and male gender, but not to age, duration of diabetes, glycosylated hemoglobin, diabetic treatment or retinopathy.

Body Mass Index↗
PubMed1995

Treatment for 'A' or 'V' pattern esotropia by slanting muscle insertion.

BACKGROUND: Patients with 'A' or 'V' pattern esotropia without vertical muscle overaction have traditionally been treated with medial rectus recession and vertical transposition of the muscle insertions. METHOD: Seven cases are presented treated by slanting muscle insertions, whereby the lower margin of the medial rectus is preferentially recessed more than the upper margin in esotropia, and the upper margin is recessed more than the lower margin in A esotropia. RESULTS: All seven patients had their A or V patterns eliminated, with six achieving good alignment in all positions of gaze. CONCLUSION: The slanting muscle insertion should be considered as an alternative technique in all cases of A or V pattern esotropia.

Adolescent↗
PubMed1993

The use of mitomycin in pterygium surgery.

We report on the use of mitomycin drops after the surgical removal of pterygiums in 70 patients. Our results justify the use of mitomycin as a standard postoperative procedure in preference to other treatments.

Combined Modality Therapy↗
PubMed1993

Optic disc coloboma associated with macular hole and retinal detachment.

A 15-year-old myopic girl had a retinal detachment associated with optic disc coloboma and a macular hole. The retinal detachment was treated successfully with vitrectomy, drainage of the subretinal fluid, and gas tamponade. The possibility of a macular hole should be investigated in myopic eyes with optic disc colobomas and retinal detachments. To the best of our knowledge, such a combination has not been described previously.

Adolescent↗
PubMed1992

Senior's syndrome (hereditary renal retinal dysplasia) associated with cataracts.

Senior's syndrome includes nephronophthisis with retinitis pigmentosa. In our patient, there was a combination of bilateral retinitis pigmentosa, cataracts, nephronophthisis, osteomalacia, growth and mental retardation, arterial hypertension, and aortic insufficiency. This case was unusual because all the features of Senior's syndrome existed along with bilateral cataracts from childhood.

Adult↗
PubMed1991

Graves' orbitopathy and restrictive myopathy.

Restrictive myopathy in Graves' orbitopathy is a disabling disorder, difficult to treat, involving clinically the inferior and medial recti. Most patients do not return to the normal, premorbid state of muscular alignment and the goal of treatment is to reach binocular vision in the important directions of gaze--straight ahead (primary position) and downgaze (reading position). The treatment in the acute, congestive stage is optical, prisms or patching, or medical. The medical treatment principally consists of a course of oral or intravenous corticosteroid treatment, and in selected patients orbital irradiation can be of benefit. Surgery is performed on the euthyroid patient after the muscular imbalance has stabilized, usually six months from the onset of the disorder. The mainstay of therapy is a large recession of the involved muscles, if possible on an adjustable suture. Sometimes marginal myotomies are added to the muscle recession. A fadenoperation on the contralateral, minimally involved inferior rectus has been suggested as a means of increasing muscular alignment in both primary position and downgaze. Thorough evaluation of the course of the disease, and the benefit of different treatment modalities is possible only with long term follow-up.

Graves Disease↗
PubMed1990

[Recurrent episodes of central retinal artery occlusion].

A 70-year-old man with arteriosclerosis of the carotid arteries developed acute occlusion of the central retinal artery and blindness during intravenous pyelography. 40 minutes after the occlusive episode he underwent paracentesis of the anterior chamber and vision returned (6/18). During the next 2 weeks, while receiving aspirin and then intravenous heparin, there were recurrent episodes of arterial occlusion and blindness that were immediately treated by repeated paracenteses of the anterior chamber. Visual activity again returned to 6/18 and his condition has remained stable as of his last clinic visit, 3 months after the first episode.

Aged↗
PubMed1990

Congenital insensitivity to pain with neuroparalytic keratitis.

Congenital insensitivity to pain is a well-defined entity in the group of sensory deficiency syndromes. To the best of our knowledge, unilateral neuroparalytic keratitis associated with congenital insensitivity to pain has not been reported. We report such a case to alert clinicians to this potentially blinding problem.

Child, Preschool↗
PubMed1988

Aspirin and secondary bleeding after traumatic hyphema.

A randomized, controlled study was conducted in 51 patients to investigate the effect of aspirin administration on traumatic hyphema. Aspirin tablets 500 mg tid were administered for seven days. Rebleeding was found in three of 23 eyes of patients who had received aspirin and in two of 28 eyes of control patients. This difference was not statistically significant (P = .405), proving that aspirin is not an important factor in rebleeding in patients with hyphema.

Adult↗