Which drugs are contraindicated for patients with glaucoma?

Patients with glaucoma should avoid any drugs that dilate the pupils, also known as mydriatic agents. These medications can increase intraocular pressure, which is particularly dangerous for individuals with glaucoma. The condition is characterized by elevated pressure in the eye, leading to damage to the optic nerve and potential vision loss. When the pupils are dilated, the drainage angle of the eye may become blocked, further exacerbating the increase in pressure. Thus, avoiding mydriatic agents is crucial in managing the condition and preventing complications.

Other options, like miotics, are actually used to treat glaucoma because they cause the pupils to constrict, which helps open the drainage angle and reduce intraocular pressure. Although topical ointments may not inherently cause issues for patients with glaucoma, it is the specific action of pupil dilation that poses a risk. Antihistamines can also have effects on pupil size but are not universally contraindicated; however, they may contribute to dry eyes and could potentially complicate the management of glaucoma in some cases, making careful consideration necessary. Overall, the explicit concern with pupil dilation aligns directly with the risks posed to glaucoma patients.