Chemistry is a thief

More than once it has
tried to addle my brain
Now it threatens my sight

Chemistry is a friend

Trying to help in the war
The fight to regain my steps
Not sure for how long or how brief

Chemistry is a curse

Will I recover and still
See colors, hues, and light
For now, I feel only grief

Chemistry to battle is my plan

A familiar fight but
now involving my sight
Time the only measure

Chemistry I pray
is my only course for
any relief