OBJECTIVE This study was aimed at localizing and quantifying retinal defects in patients with branch retinal vein occlusion by means of scanning laser perimetry and analyzing the mechanism involved in the functional recovery after laser therapy. DESIGN Prospective nonrandomized clinical trial with concurrent comparison group. PARTICIPANTS Fifty-eight patients with isolated branch retinal ve...

Functional disorders of vision have al­ ways been of concern and interest to oph­ thalmologists and neurologists. The common patterns of these disorders are well known and it is usual to rely upon the characteristic visual field defects in establishing the diag­ nosis. The occurrence of a central scotoma is often held to indicate organic disease, al­ though Kestenbaum refers to the possibili­ t...

PURPOSE To evaluate optic nerve characteristics independent of systemic factors predisposing to parafoveal scotoma in normal tension glaucoma. METHODS We included 40 patients with bilateral normal tension glaucoma with parafoveal scotoma (visual field defect in one hemifield within 10° of fixation with at least one point at p<1% lying at the two innermost paracentral points) in only one eye (...

The purpose of the present study was to investigate the degree to which foveal information is necessary for object identification. To explore this question, we used an artificial moving scotoma paradigm to eliminate a region of a currently viewed display in real time as a function of eye position. Subjects examined linear arrays of four line drawings of objects while their eye movements were re...

Horizontally scrolling text is, in theory, ideally suited to enhance viewing strategies recommended to improve reading performance under conditions of central vision loss such as macular disease, although it is largely unproven in this regard. This study investigated if the use of scrolling text produced an observable improvement in reading performed under conditions of eccentric viewing in an ...