PURPOSE To investigate the clinical characteristics and sensory mechanism of microtropia. METHODS Twenty patients with primary microtropia were studied. The patients were evaluated by the visuscope, Irvine prism test, Bagolini striated glasses test, Worth 4-dot test (W4D), TNO, and stereo-fly plate of the Titmus test. RESULTS The patients who had positive cover test and eccentric fixation s...

PURPOSE To evaluate the contrast sensitivity and stereopsis tests in patients who underwent bilateral implantation of multifocal intraocular lens. METHODS Tests of contrast sensitivity using the Pelli-Robson chart and stereopsis evaluation with the Titmus Stereo Test were performed in 20 patients 30-60 days after the bilateral implantation of Acrysof Restor multifocal intraocular lens. RESU...

Many papers have reported that motion perception asymmetry (MPA) is replaced by motion perception symmetry (MPS) by the 4th to 5th month after birth, when stereopsis starts to occur in normal infants. Duane's syndrome is a congenital motor abnormality, it does, however, reportedly show good stereopsis. We confirmed the stereopsis in Duane's syndrome and checked the motion perception (MP) by usi...

PURPOSE To investigate the association between binocular function and vision after cataract removal and primary posterior chamber intraocular lens (PC-IOL) implantation in children with unilateral cataract and to identify visual function differences according cataract type. METHODS Clinical records of 2- to 6-year-old patients with unilateral cataract removal and primary PC-IOL implantation w...

INTRODUCTION This is a retrospective study to determine the preoperative and postoperative binocular status of adults who have undergone surgical correction of strabismus. METHODS A list of all consecutive adult patients who underwent surgery for strabismus between June 1990 and December 2001 (surgery performed by M.B.M.) was compiled, and their medical charts were reviewed. Patients were inc...

Although cognitive and sensory deficits have been identified as a core feature of schizophrenia, only a small portion of visual sensorium has been explored. To date, studies on visual system of three-dimensional percepts based on two-dimensional information still are limited. This study is the first to examine the integrity of stereopsis of schizophrenia in a Han Chinese population, and to furt...

Purpose: The prevalence of myopia in school-age children and rural area in Taiwan has increased dramatically. The aim of this study was to explore the associated factors of myopia in rural adolescents. Methods: A cross sectional design with a rural junior high student was invited to participate in this study. The relationship between refraction error (RE), spectacle fitting condition, and ocula...

OBJECTIVE To describe the possible impairment of binocular vision in primary open angle glaucoma (POAG) patients. METHOD A cross-sectional study was conducted on 58 glaucoma patients, 76 ocular hypertensives and 82 normal subjects. They were examined with a battery of binocular tests consisting of the measurement of phoria angles, amplitudes of fusion (AF), near point of convergence (NPC) ass...

In a strabismus clinic, measurement of distance stereopsis is particularly useful in the management of intermittent exotropia and esotropia of divergence paralysis type. This is mainly because reduction in the distance stereopsis is a sensitive sign of early deterioration of these strabismic disorders and generally makes a case for the surgical intervention [10]. Various tests have been used fo...

PURPOSE To evaluate the effectiveness of graded (adjustable intraoperatively) partial vertical rectus muscle tenotomy at the insertion in correcting small degrees of hypertropia. METHODS All patients with best-corrected visual acuity of better than 6/30 in both eyes who over a 30-month period underwent partial tenotomy of vertical rectus muscle(s) only (no concurrent oblique muscles) were inc...