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At least 1,315 records · Page 73Linked to original sources
PubMed1992

[Prevention of amblyopia by active production of the macular fixation reflex in infants].

Among 1455 examined babies aged 3 months the authors found a lack of normal fixation reflex in both eyes in 155 and in 52 in one eye only. In these eyes the parents applied 3 times a day an alternate occlusion of eyes or of the master eye only showing the babies interesting toys. After 2 weeks 83 babies showed normalization of fixation and after following 2 weeks of over described occlusion only 8 of them did not reveal a normal fixation reflex. These babies exhibited also a convergent squint. The pleoptic treatment by means of an euthyscope was installed, followed by normalization of the fixation reflex in 3. The rest of the patients was treated with spheroprismatic glasses by localization method.

Amblyopia↗
PubMed1992

Combined and separate effects of eye patching and visual stimulation on unilateral neglect following stroke.

In Experiment 1, 11 of 13 stroke patients with left-sided neglect benefitted from monocular patching in at least one (of five) tests of neglect. This beneficial effect in most cases was limited to the period when the patch was worn. In Experiment 2, another group of stroke patients (n = 18) with left-sided neglect were tested in a line-bisection task with monocular patching and/or lateralized visual stimulation--a procedure previously shown to reduce neglect. Each procedure resulted in substantial benefits; the two procedures combined resulted in significantly larger benefits than either alone. As in Experiment 1, the degree of benefit of patching (alone or in combination with stimulation) was not related to several demographic factors. These findings suggest that monocular patching, together with lateralized visual stimulation, may significantly reduce neglect in daily activities and may be more beneficial than procedures requiring patients to be aware of their disorder and to use strategies for scanning the neglected side.

Aged↗
PubMed1992

Comparison of modulation transfer function and through focus response with monofocal and bifocal IOLs.

We analyzed modulation transfer function (MTF) and through focus response (TFR) of the TRUE VISTA bifocal IOL and monofocal IOLs and compared the experimental and clinical data. MTF and TFR were measured at different pupil sizes (2, 3, 4 mm), base powers (14, 21, 27 D), add powers (2, 3, 4 D), and distance zone diameters (1.25, 1.5, 1.75 mm). Standards were established to correlate MTF and contrast sensitivity, as well as TFR and the defocus curve measured clinically. MTF of TRUE VISTA decreased with increasing pupil size and base power. A near add of 4 D showed the best MTF at distant and near focus. MTF of TRUE VISTA at near focus was lower than at distant focus and MTF at distant focus was lower than MTF of monofocal IOLs. TFR and the defocus curve correlated closely. MTF and contrast sensitivity of TRUE VISTA at far and near focus also correlated closely. MTF and contrast sensitivity of monofocal IOLs and TRUE VISTA at distant focus did not correlate. MTF was considerably better with monofocal IOLs while contrast sensitivity was slightly better only at low contrast. However, MTF of monofocal IOLs was much higher than MTF of a normal eye while MTF of TRUE VISTA at distant focus was only slightly lower than the MTF of a normal eye. Using MTF of a normal eye as a threshold, our results demonstrated a close correlation between experimental and clinical findings. MTF and TFR may therefore reliably predict the performance of bifocal IOLs.

Contrast Sensitivity↗
PubMed1992

The effect of head trauma on the visual system: the doctor of optometry as a member of the rehabilitation team.

Brain injury results from either head trauma or strokes and causes many visual and visually related disturbances. Rehabilitation is aimed at developing skills that allow the patient to optimally function as a viable and independent member of society. Often the resultant visual deficits remain undiagnosed and untreated, which hinder the patient's total rehabilitation. Optometric evaluation of brain injured patients should routinely be performed as part of the transdisciplinary team approach to rehabilitation. Optometrists are uniquely qualified to diagnose and treat visual and functional deficits of the visual system in the brain injured population. The purpose of this paper is to present a rationale for optometric participation in the rehabilitation of head trauma and stroke patients.

Brain Injuries↗
PubMed1992

Optometric therapy for the left brain injured patient.

This article discusses the role of optometric visual therapy in the rehabilitation of left head trauma patients. It overviews the functions of the left hemisphere and the consequences of traumatic brain injury. A patient who was helped by this perceptual therapy is presented. An overview of the therapy approach used for this patient is discussed.

Aged↗
PubMed1992

The utilization of a temporal mirror coating on the back surface of the lens as a field enhancement device.

A 37-year-old male had a right homonymous hemianopia due to trauma. During his initial low vision assessment, a small clip-on mirror was dispensed to help him compensate for his field loss. At follow-up, he reported satisfaction with the mirror. He also reported that novelty "look behind you" sunglasses were beneficial to him and less conspicuous than the clip-on mirror. He requested temporal mirror coating on otherwise clear lenses so that he could utilize the glasses at night or on cloudy days. We fabricated this for him and also mounted a small mirror nasally within the vertex distance behind his frame. The fabrication of the two devices will be discussed as well as a comparison of these three field enhancement devices.

Adult↗
PubMed1992

Clinical research and statistical analysis of a visual field awareness system.

This article discusses the clinical research and applications of the statistical analysis of a system called "The Visual Field Awareness System." This medical lens system allows patients with a visual field loss to 1) scan toward area of the loss, to see objects sooner and more clearly, and 2) demonstrate increased function and safety. Seventy-nine percent (27 of 34) of the patients in the sample received and accepted the prism treatment. Of this group, a minimum of 70 percent (19 of 27) continue to benefit from this treatment strategy. Statistically significant predictors of success are discussed. This study demonstrates that patients suffering visual field loss may show functional benefit by the utilization of this prism treatment along with vision rehabilitation.

Adult↗
PubMedDate not supplied

[The importance of the pleoptophor in treating children with amblyopia].

The author presents her own experience in pleoptic treatment, using the occlusion and the exercises at the amblyophor, on 161 children, during a 12 years period of time. The results of the therapy lead to cure in 38% of cases, to improvement in 46% of cases and fail in 16% of cases. The indications, the preparation, the practical development of the treatment at pleoptophor are discussed; the reasons of the failures are carefully analyzed. It is emphasized that the good results are due to the tracking down of children with strabismus in kindergartens, to the application of the amblyopic preventive optical treatment and to pleoptic treatment maintained for years with monthly checkups to prevent relapses.

Amblyopia↗
PubMed1992

Treatment of esotropia with anomalous correspondence: a case report.

Management of anomalous correspondence in esotropia has been a controversial topic until recently. This case report presents a sequential treatment regimen which resulted in a successful binocular result for the patient. The implementation of overcorrecting prism, vision therapy/orthoptics, and extraocular muscle surgery is covered in the discussion of management strategies.

Child↗