Taylor had a Functional Vision Assessment at CNIB (Canadian National Institute for the Blind) today. It went really well, her visual attention has improved so much over the past four months. The assessment looked at many different things...
Her pupillary response was good, both eyes reacted well and equally to light. Children with vision loss will often gaze at lights or may be very sensitive to different types of light. Taylor has always looked towards lights, and she is sensitive to sunlight (she closes her eyes or looks down). She enjoyed viewing coloured illuminated targets and didn`t cringe when they used the penlight to check pupillary reaction.
Her eyes are well aligned with occasional movement of her right eye towards the nose when she was tired. Blink response was present to both touch and fast approaching objects, but inconsistent to noise.
Fixation is seen when a child looks directly at a target and maintains this gaze. Taylor`s target preference was best with yellow and blue lights followed by red light and the high contrast of black and white. Holding a moving object was not helpful, made it harder for her to maintain gaze. Distance was best from 1 to 2 feet. She occasionally noticed more distant objects but did not maintain her gaze or follow as long.
Visual fields are the areas where one can see visual targets. Taylor can see to about 30 degrees from midline at eye level on right and left, above eye level to eyebrow on both sides, but below eye level it was difficult to get her visual attention. Using central vision is best for her.
Tracking is the ability of the eyes to follow a moving target. Taylor tracks until 45 degrees right of midline and then loses target. Tracking smoothly using yellow sparkle ball horizontally. Less smooth and slower vertically. More difficulty tracking diagonally and with less preferred targets. Able to find the target again often when she lost it while tracking.
Convergence refers to the eyes moving towards the nose to accommodate for objects approaching midline. Divergence occurs when the eyes move away from the nose to focus on an object moving away from midline. Only slight convergence was noted and then she diverted her gaze.
Taylor does not have object permanence. This is the understanding that when an object is moved, falls out of sight and is silent, the object still exists. She also does not show shifting of gaze, the ability to quickly shift fixation from one target to another, either at the same distance or between near and distant objects.
Her pupillary response was good, both eyes reacted well and equally to light. Children with vision loss will often gaze at lights or may be very sensitive to different types of light. Taylor has always looked towards lights, and she is sensitive to sunlight (she closes her eyes or looks down). She enjoyed viewing coloured illuminated targets and didn`t cringe when they used the penlight to check pupillary reaction.
Her eyes are well aligned with occasional movement of her right eye towards the nose when she was tired. Blink response was present to both touch and fast approaching objects, but inconsistent to noise.
Fixation is seen when a child looks directly at a target and maintains this gaze. Taylor`s target preference was best with yellow and blue lights followed by red light and the high contrast of black and white. Holding a moving object was not helpful, made it harder for her to maintain gaze. Distance was best from 1 to 2 feet. She occasionally noticed more distant objects but did not maintain her gaze or follow as long.
Visual fields are the areas where one can see visual targets. Taylor can see to about 30 degrees from midline at eye level on right and left, above eye level to eyebrow on both sides, but below eye level it was difficult to get her visual attention. Using central vision is best for her.
Tracking is the ability of the eyes to follow a moving target. Taylor tracks until 45 degrees right of midline and then loses target. Tracking smoothly using yellow sparkle ball horizontally. Less smooth and slower vertically. More difficulty tracking diagonally and with less preferred targets. Able to find the target again often when she lost it while tracking.
Convergence refers to the eyes moving towards the nose to accommodate for objects approaching midline. Divergence occurs when the eyes move away from the nose to focus on an object moving away from midline. Only slight convergence was noted and then she diverted her gaze.
Taylor does not have object permanence. This is the understanding that when an object is moved, falls out of sight and is silent, the object still exists. She also does not show shifting of gaze, the ability to quickly shift fixation from one target to another, either at the same distance or between near and distant objects.
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