Specialty Ophthalmic Therapies: Edema, Ptosis, and Miotics
Hypertonic saline for corneal edema: Sodium chloride 5% (Muro 128)
Sodium chloride 5% (Muro 128) is a standard hypertonic agent used to reduce epithelial corneal edema. By creating a hypertonic tear film, it draws fluid out of the cornea via osmosis. Patients often notice the most benefit when edema is worst on waking.
Common uses include Fuchs' endothelial dystrophy to improve morning vision and recurrent corneal erosion (RCE) as part of a regimen intended to support epithelial adhesion. Ointment is often preferred at bedtime for longer contact time, with drops used during the day as tolerated.
Pharmacologic ptosis therapy: Oxymetazoline 0.1% (Upneeq)
Oxymetazoline 0.1% (Upneeq) is an alpha-adrenergic agonist that stimulates Müller's muscle, producing a modest upper eyelid elevation in many patients. It is indicated for acquired blepharoptosis and is most useful for mild to moderate cases when Müller's muscle function is intact. It does not correct dermatochalasis, true levator dehiscence, or most neurogenic causes of ptosis. Because systemic absorption is low but not zero, review cardiovascular history, blood pressure control, and concomitant adrenergic medications when considering long-term use.
Pilocarpine: targeted indications and key counseling points
Pilocarpine stimulates the iris sphincter (miosis) and the ciliary muscle (increased trabecular outflow). Although routine glaucoma management often relies on newer classes, pilocarpine remains clinically relevant in several focused scenarios:
- LPI preparation in narrow angles: Pre-treatment miosis can help tighten the peripheral iris in pupillary block or narrow-angle eyes.
- Adie's tonic pupil testing: Low-dose pilocarpine (for example 0.125%) may demonstrate denervation supersensitivity.
- Presbyopia drops: Low-concentration pilocarpine can increase depth of focus via a pupil-size effect, often used selectively based on symptoms and patient tolerance.
Counseling should include expected brow ache or headache in some patients, possible dimming in low light due to smaller pupil size, and return precautions for new flashes or floaters in higher-risk patients.