Comparison of pain, motility, and preoperative sedation in cataract phacoemulsification patients receiving peribulbar or sub-Tenon's anesthesia.

Background And Objectives: The authors hoped to reduce the need for preoperative sedation and intravenous pain medication during cataract surgery by converting from peribulbar anesthesia to sub-Tenon's anesthesia.

Patients And Methods: A consecutive series of 2453 cataract patients' charts were reviewed. Each patient had previously watched a videotape explaining the anesthetic method to be used.

Chromograms of color normals and multiple sclerosis patients.

The Gunkel chromograph was tested on 81 volunteers with normal color vision as indicated by screening with Ishihara plates and the panel D-15. Most of these color normals located their neutral area superior to the geometric center of the chromogram. A minority located their neutral area at the geometric center.

The pupil dark response in narcolepsy.

The pupil dark response and maintenance of pupil area in darkness were compared in seven narcoleptic patients and 14 age-matched normal volunteers. Onset and degree of miosis after maximal pupil dilation in darkness were similar in the two groups, although three narcoleptic patients and no normal volunteers fell asleep during the experiment. The results of this study contradict earlier suggestions that pupillography can be used to distinguish normal individuals in family studies of narcoleptic patients.

The pupil dark response in normal volunteers.

A new semi-automatic videopupillometer with a two-channel video integrator uses prismatic displacement of pupil images for binocular recording with a single infrared-sensitive video camera. The video integrator graphically records pupil area or diameter during testing and can reanalyze and plot information from videotape recordings of pupil responses. This new pupillometer was used to evaluate the pupil dark response in 178 eyes of 89 normal human volunteers (ages 18-75 years).