Patient is 12 months post CVA (Stroke), with development of Lateral Meduallary Syndrome. As a result of a minor hemifacial loss of sensation on L the patient lacked appropriate stimulation to produce trophic factors resulting in a significant central corneal abrasion. After about 3 months the patient saw a complete resolution of the abrasion. However, they are now complaining of a symptom I can't figure out. They say whenever they view a bright light source against a dark background they see a significant, complete halo that surrounds the light source. If its a white light source they say the halo has an obvious primastic (rainbow) element to it. It's only affecting the L eye. The halo doesn't appear except in these high contrast scenarios.
I'm not sure what to make of this. I'm thinking a topographic analysis of the cornea, to see if there is a defect in the healing of the cornea that can't be seen with a normal slit lamp evaluation? That's the best I could come up with. I've never heard of anything quite like this before. I'm hoping someone here has seen something like this before, or knows the optics of it better than I do and where to look next for what is causing this.
Patient Has Something Going On That I Can't Figure Out...
I'm not sure what to make of this. I'm thinking a topographic analysis of the cornea, to see if there is a defect in the healing of the cornea that can't be seen with a normal slit lamp evaluation? That's the best I could come up with. I've never heard of anything quite like this before. I'm hoping someone here has seen something like this before, or knows the optics of it better than I do and where to look next for what is causing this.
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