You are exactly right in your thinking. Different drops are used to dilate eyes. Tropicamide (mydriacyl) is the most common drop and it comes in two strengths, % and %. The % will not last quite as long but it is not a large difference. Tropicamide will dilate the eyes and interfere with near focusing. Phenylephrine is often added as a second drop with mydriacyl to enhance the dilation. Phenylephrine enlarges and hastens the dilation but has no effect on focusing and usually does not prolong the dilation. Paremyd is another drop containing % hydroxyamphetamine and % tropicamide. It does not dilate the eyes as well but tends to last a shorter time period and not interfere with near focusing as much. Longer lasting drops include cyclopentolate and homatropine. They have a longer mode of action and exert significantly more interference with close vision. They are usually used for children.
There are no adequate or well-controlled studies evaluating the use of Maxidex in pregnant women. Prolonged or repeated corticoid use during pregnancy has been associated with an increased risk of intra-uterine growth retardation. Infants born of mothers who have received substantial doses of corticosteroids during pregnancy should be observed carefully for signs of hypoadrenalism. Studies in animals have shown reproductive toxicity after systemic administration. The ocular administration of % dexamethasone also resulted in fetal anomalies in rabbits (see section ).
Very common (10% or more): Cataract (up to 68%), elevation of intraocular pressure (28%), conjunctival hemorrhage (22%)
Common (1% to 10%): Eye pain, conjunctival hyperemia, ocular hypertension, reduced visual acuity, conjunctivitis, vitreous floaters, conjunctival edema, dry eye, vitreous detachment, vitreous opacities, retinal aneurysm, foreign body sensation, corneal erosion, keratitis, anterior chamber inflammation, retinal tear, eyelid ptosis, vitreous detachment, keratoconjunctivitis sicca, corneal staining, photophobia, blurred vision, eye pruritus, increased lacrimation
Rare (less than %): Burning, stinging
Frequency not reported: Glaucoma with optic nerve damage, visual acuity and visual field defects, subcapsular cataract formation, secondary ocular infection and perforation of the globe
Postmarketing experience: Complication of device insertion (implant misplacement), device dislocation with or without corneal edema, endophthalmitis, hypotony of the eye (associated with vitreous leakage due to injection), retinal detachment [ Ref ]