Eye drops containing corticosteroids should not be used for longer than a week except under an eye specialist's careful surveillance combined with regular measurement of intraocular pressure.
Prolonged use of corticosteroids may result in elevated intraocular pressure (IOP) with possible development of glaucoma and infrequent damage to the optic nerve, defects in visual acuity and fields of vision, posterior subcapsular cataract formation, and delayed wound healing. Prolonged use may also suppress the host immune response and thus increase the hazard of secondary ocular infections. Steroids should be used with caution in the presence of glaucoma. Intraocular pressure should be checked frequently.
Acute untreated infection of the eye may be masked or activity enhanced by the presence of steroid medication.
Use of intraocular steroids may prolong the course and may exacerbate the severity of many viral infections on the eye (including herpes simplex). Use of a corticosteroid medication in the treatment of the patients with a history of herpes simplex keratitis requires great caution. Frequent follow-ups including slit lamp microscopy is recommended.
To prevent eye injury or contamination, care should be taken to avoid touching the applicator tip to the eye or to any other surface. The use of the bottle by more than one person may spread infection.
FML contains benzalkonium chloride which is irritant to the eye and could cause discoloration of soft contact lenses. Avoid contact with soft contact lenses. Remove contact lenses before FML is used and wait for at least 15 minutes before reinsertion.
Concomitant ocular medication should be administered 5 minutes prior to the installation of FML.
Visual disturbance
Visual disturbance may be reported with systemic and topical corticosteroid use. If a patient presents with symptoms such as blurred vision or other visual disturbances, the patient should be considered for referral to an ophthalmologist for evaluation of possible causes which may include cataract, glaucoma or rare diseases such as central serous chorioretinopathy (CSCR) which have been reported after use of systemic and topical corticosteroids.