In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Even after early detection and prompt treatment , 41 % of cases of uveitis did not respond to more than six months of intensive topical treatment with corticosteroids and mydriatics .
### Output Text:
Even after early detection and prompt treatment , 41 % of cases of uveitis did not respond to more than six months of intensive topical treatment with <span class="chemical">corticosteroids</span> and mydriatics . 