Biomedical subjects

Dora Lengyel

Publications and source records attributed to Dora Lengyel.

3 recordsLinked to original sources

PubMed2003

[Orbital blow-out fractures, a series of 12 operated cases].

BACKGROUND: The management for blow-out fractures is controversial. Some studies suggest early surgical treatment, others a conservative attitude. PATIENTS AND METHODS: We studied retrospectively the data of patients with blow-out fracture, referred to our Neuro-Ophthalmology and Strabismus Clinic from July 1993-May 2000. Out of 48 patients, 22 were operated. We evaluated all 12 patients who underwent pre- and postoperative orthoptic examinations. RESULTS: The patients' age at the time of the accident was 7.8 to 67.8 years (median 25.3). The delay between accident and operation was 2 to 91 days (median 5.5). Eleven patients were operated within 14 days, one after three months. All patients suffered preoperatively from double-vision. Postoperatively the field of fusion augmented, the middle point centralised. The follow-up time was 22 to 915 days (median 251). However, at the last examination, 0.5 to 16 months (median 4.5) after surgery, only seven out of 12 patients were symptom-free. CONCLUSION: Surgical reconstruction within the first week after trauma shows good results concerning ocular motility, sensibility, enophthalme, and field of fusion. An individual evaluation is surely necessary.

Adolescent↗

PubMed2003

Comparison between grating acuity measured by visual tracking and preferential looking in infants.

BACKGROUND: The aim of this study was to compare the visual acuity measured by visual tracking and by preferential looking. METHODS: We examined 51 healthy full-term infants between three and 93 days of age. Visual acuity was tested with two different methods. One method was visual tracking (smooth and saccadic pursuit), recorded with an infrared photo-oculographic technique. For stimulation of visual tracking a square of 9.4 degrees of visual angle with vertical gratings (0.1, 0.2, 0.4, 0.8 and 1.6 cycles per degree) moved at a constant velocity of 7.5 degrees/sec. for 38 sec. on a surface of equal luminance. The other method was preferential looking, determined by a second examiner, where we used plates with vertical gratings (0.1, 0.2, 0.4, 0.8, 1.6, 3.2 and 6.4 cycles per degree). RESULTS: The comparison of the two methods shows a significant correlation (p < 0.05). Visual acuity determined by visual tracking is lower than the acuity determined by preferential looking in the first 14 weeks of age. CONCLUSION: Our study shows that visual tracking is a valid method for visual acuity testing in infants. The need of sustained attention is a possible reason for the lower values in comparison with the acuity determined by preferential looking.

Female↗

PubMedDate not supplied

The morphology and natural history of childhood cataracts.

The morphology of congenital cataract reflects a combination of the timing and nature of the cause, the anatomy of the lens including its capsule, its development, and changes that take place with time. Morphology may variably affect prognosis, give a clue to the etiology and the age of onset and, in an isolated case, sometimes suggest heritability. The spectrum of morphological variations is enormous and can be complex. A comprehensive approach is to classify the variations according to the area of the lens involved, and sub-dividing them by a detailed description of the shape and appearance. Each specific morphological type is then analyzed determining the etiology, visual prognosis, and management. The use of gene markers has allowed many of these variations to be identified and categorized. Cataracts in childhood can involve the whole lens, in which case they are called total, Morgagnian, or disk-like. They can affect only the center of the lens: lamellar, nuclear, oil droplet, cortical, or coronary. They can be anterior: anterior polar, anterior subcapsular, or anterior lenticonus. The posterior aspect of the lens can also be affected in different fashions: Mittendorf's dot, posterior lenticonus, posterior cortical cataracts, or posterior subcapsular. There are five more forms that must be described separately: punctuate lens opacities, sutural cataracts, coralliform or crystalline, wedge-shaped, and persistent hyperplastic primary vitreous.

Cataract↗