No abstract available.
Humans ; Ocular Motility Disorders*

No abstract available.
Ocular Motility Disorders* ; Tuberculosis, Meningeal*

To investigate whether the slanted medial rectus recession can correct excess esotropia at near without overcorrection at distance and reduce the distance-near deviation difference, we examined 11 convergence excess esotropia patients who had deviation at near exceeding distance esotropia by 15PD or more, and underwent this operation. They composed of 7 partially accommodative esotropia with high AC/A ratio and 4 nonaccommdodative convergence excess esotropia. The surgical procedure consisted of bilateral, symmetrical slanted recession of the medial rectus muscle. The amount of recession of the upper and lower margins were calculated so as to correct the esotropia with correction at distance, and near respectively. The preoperative mean near and distance deviation were 33.8PD and 15PD, and each decreased to 9.2PD and 4.3PD postoperatively. The preoperative mean distance-near deviation difference were 18.8PD, and decreased to 5.4PD postoperatively. The 3 patients decreased over 10PD in the distancenear deviation difference. In conclusion, the surgical procedure, as bilateral slanted medial rectus recession, can correct excess esotropia at near without overcorrection at distance and reduce the distance-near deviation difference. Therefore, the bilateral slanted medial rectus recession may be used as the method of surgical treatment in convergence excess esotropia.
Esotropia* ; Humans ; Ocular Motility Disorders*

PURPOSE: To evaluate the preoperative ocular motility disorder and to study the relationship between motility disorder and morphologic change in blowout fracture. METHODS: The ocular motility disorders of 38 patients who had inferior wall orbital fracture were evaluated and classified using Hess test and quantified using field of biocular single vision (FBSV). The type and location of fracture and the morphologic changes of inferior rectus muscle was classified using computed tomography. RESULTS: In Hess test, up gaze disorder was found in 12 patients, down gaze disorder in 1, up and down gaze disorder in 21, and asymmetric disorder in 4. In up and down gaze disorder group, the FBSV score was significantly low (p<0.05) and the rate of entrapment or deviation of inferior rectus muscle was significantly high (p<0.05) in comparison with up gaze disorder group. CONCLUSIONS: The ocuar motility disorder induced by inferior wall orbital fracture could be evaluated using Hess test. The ocular motility disorder was more influenced by entrapment or deviation of inferior rectus muscle rather than the type or location of the fracture. Preoperative assessment of the ocular motility disorder could play an important role in evaluating the disorder of inferior rectus muscle and its treatment.
Humans ; Ocular Motility Disorders ; Orbital Fractures

No abstract available.
Infarction ; Mesencephalon ; Ocular Motility Disorders ; Paralysis

The authors report jerky seesaw nystagmus, extorsional downbeating in the right eye and intorsional upbeating in the left eye, in a patient with right internuclear ophthalmoplegia (INO). This pattern of nystagmus may occur by disrupting pathways from contralateral posterior and anterior semicircular canals by a lesion in the medial longitudinal fasciculus. Depending on damage to the pathways from contralateral vertical canals, various patterns of dissociated torsional-vertical nystagmus may accompany INO.
Humans ; Ocular Motility Disorders* ; Semicircular Canals

The authors report jerky seesaw nystagmus, extorsional downbeating in the ipsilesional eye and intorsional upbeating in the contralesional eye, in a patient with internuclear ophthalmoplegia (INO) from focal pontine lesion. This pattern of nystagmus may occur by disrupting pathways from contralateral posterior and anterior semicircular canals by a lesion in the medial longitudinal fasciculus. Depending on the pathways involved, various patterns of dissociated torsional-vertical nystagmus may accompany INO.
Humans ; Ocular Motility Disorders* ; Semicircular Canals

Internuclear ophthalmoplegia(INO)is a horiwntal ocular motor disturbance caused by a lesion of the medial longitudinal fasciculus. We have experienced a case of bilateral internuclear ophthalmoplegia associated with exotropia, which revealed the symptom of bilateral impairment of adduction and dissociated nystagmus of the abducting eye on horizontal gaze in either direction. No bilateral internuclear ophthalmoplegia caused by trauma has yet been reported in this country. Here we report the case of the trauma-related medial longitudinal fasciculus lesion and its pathophysiology along with a literatural review.
Exotropia ; Nystagmus, Pathologic ; Ocular Motility Disorders*

This study is concerned with human vertical saccadic systam to various visual stimulus. A system is described fer the recording and analysis of corrective movements and the angular velocities asscciated with 10 degrees and 20degrees vertical saccades. Recordings wsre made with photoelectric IR reflection method and the saccades were induced by a target system which operates on non-predictable manner. Statistical results for average peak veIomnes of right eye are given for a group of 4 normal subjects and compared with horizontal saccades. Most of corrective movements were categorized to saccadic and glissadic and magnitude of corrective errors were within 1 degree and 2 degrees and showed 20% production rate. The peak velccity statistics showed as 280 and 440 deg/s associated with 10 degrees and 20 degrees vertical movement and downward values were slightly faster than upward movements. Our results were compared with horizontal saccades and discussed the possibility of research and clinical tool that could be used on a large number and variety of patients.
Eye Movements* ; Humans ; Ocular Motility Disorders* ; Saccades

No abstract available.
Craniocerebral Trauma* ; Head* ; Ocular Motility Disorders*