Revised SPCs: Tenoretic 100 mg/25 mg and Tenoret 50 mg/12.5 mg (atenolol/chlortalidone) film coated tablets
Choroidal effusion has been added to SPC as ADR of unknown frequency. It is noted that sulphonamide/sulfonamide derivative drugs (such as chlorthalidone) can cause this idiosyncratic reaction which can lead to visual field defect, transient myopia and acute angle-closure glaucoma
Source:
electronic Medicines compendium