Feeling of very sensitive to light is called as photophobia
and it indicates corneal abrasion or corneal epithelial defect. Since you are using contact lens
it may be a complication related to using of contact lenses.
You should not use the eyedrops prescribed after cataract surgery
, because the eye drops usually prescribed after cataract surgery are steroids
and they should not be used in case of corneal abrasion because of high risk of infection of the corneal abrasion.
You need to consult your eye doctor and treatment of corneal abrasion is by antibiotic eye drops, lubricating eyey drops and avoiding contact lenses