eccentric fixation
A condition where the eye uses a retinal area other than the fovea for fixation, commonly seen in dense amblyopia.
Full Definition
Eccentric fixation occurs when an eye consistently uses a non-foveal retinal area to fixate on objects, typically developing secondary to dense amblyopia or macular pathology. This abnormal fixation pattern can be detected using visuoscopy or direct ophthalmoscopy with fixation targets. The degree of eccentricity is classified as central, paracentral, or peripheral based on the distance from the fovea. Eccentric fixation significantly impacts visual development and treatment outcomes in amblyopic children, often requiring specialized therapy approaches including penalization or biofeedback training. Early detection and intervention are crucial for optimizing visual rehabilitation potential.
Usage
Usage note: Document the location and stability of eccentric fixation as these factors influence treatment planning and prognosis.
In Context
- "Visuoscopy revealed eccentric fixation 2 disc diameters temporal to the fovea in the amblyopic left eye." — Amblyopia assessment report
- "The presence of eccentric fixation indicated a poor prognosis for visual improvement with conventional occlusion therapy." — Treatment planning note