Pseudoexfoliation syndrome with poorly dilating pupil: a light and electron microscopic study of the sphincter area.

Background: The study was carried out to examine histological changes in the iris sphincter muscle and surrounding tissue in eyes with pseudoexfoliation syndrome (PXS).

Methods: Seventeen patients with PXS, 14 of them having capsular glaucoma, were enrolled into the study. Iris biopsies were obtained during extracapsular cataract extractions (ECCE) requiring sphincterotomies.

Color Doppler imaging of the ophthalmic artery blood flow spectra of patients who have had a transient ischemic attack. Correlations with generalized iris transluminance and pseudoexfoliation syndrome.

Purpose: To study the interrelations among pseudoexfoliation syndrome (PXS), abnormal iris transluminance, and ophthalmic artery blood flow in a controlled study.

Methods: Ultrasonographic examination using color Doppler imaging (CDI) was performed on the ophthalmic arteries of 46 unselected patients (92 eyes) who have had at least one transient ischemic attack (TIA) and on 32 healthy subjects (64 eyes). The authors recorded the peak systolic and end diastolic velocities and determined the resistivity indices.

Generalized transluminance of the iris and the frequency of the pseudoexfoliation syndrome in the eyes of transient ischemic attack patients.

Background: Abnormal generalized iris transluminance has been reported to have connection with the pseudoexfoliation syndrome (PXS). According to angiographic studies, microvascular changes are found to be present on the iris of these patients, which suggests that hypoxia has a role in the development of PXS. On the other hand, carotid transient ischemic attack (TIA) patients have been shown to have some ocular key symptoms due to hypoxia.

Long-term effects of bilateral frontal lobe lesions from neuropsychiatric and neuroradiological aspects.

Long-term effects of bilateral prefrontal lesions were studied in 14 lobotomized schizophrenic patients who were operated in the fifties. CT scans revealed cystic bilateral frontal lesions in almost every patient and cortical atrophy was seen in 5 patients. The prefrontal syndrome was severe in 1 patient, marked in 1 patient, mild in 9 patients and absent in 3 patients.