8.3 Anesthetics, Glaucoma Agents & Prescription Verification

Anesthetics, Glaucoma Medicines, and Prescription Verification

Medication support begins with two identifiers and a complete comparison of patient, eye, drug, concentration, dosage form, route, directions, allergies or prior reactions, expiration, label, and authorized order. Stop for a mismatch, unclear abbreviation, damaged seal, particles, discoloration outside the label description, missing storage history, or an unexplained change.

Topical anesthetics

Proparacaine, tetracaine, and other topical ocular anesthetics block nerve conduction at the ocular surface. They may be ordered for tonometry, contact-lens examination, minor procedures, or diagnostic manipulation. Product concentration, onset, duration, storage, and number of instillations differ.

Repeated unsupervised use can suppress epithelial healing and protective sensation, producing persistent defects, infection, stromal injury, or perforation. A technician must not independently prescribe, dispense, or recommend a clinic bottle for home use. A patient's request for pain medicine or repeated anesthetic is routed to the licensed clinician for diagnosis, safer analgesia, and follow-up.

Glaucoma medication classes

• Prostaglandin analogs increase uveoscleral outflow. Record inflammation, lens status, macular-edema history, pregnancy considerations, iris or eyelash changes, and the exact product; the prescriber weighs relevance.
• Beta blockers reduce aqueous production but can worsen bronchospasm, bradycardia, conduction disease, or heart failure through systemic absorption. Capture asthma, COPD, pulse, cardiac history, and interacting systemic drugs.
• Alpha-2 agonists reduce aqueous production and can cause allergy, fatigue, dry mouth, hypotension, or central nervous system effects. Pediatric age and product labeling require special attention.
• Carbonic anhydrase inhibitors may be topical or systemic. Record renal disease, electrolyte problems, prior reaction details, and interacting therapy. Do not reduce every sulfonamide history to an automatic conclusion; the prescriber evaluates the actual reaction and product.
• Cholinergic agents can cause miosis, brow ache, accommodative symptoms, and retinal or systemic concerns in selected patients. Verify the indication and report new flashes, floaters, field loss, or severe symptoms.

Combination products contain more than one active ingredient. Medication reconciliation must capture the generic components so therapy is not duplicated under different brand names.

Cap color and label reading

Ophthalmic cap-color conventions can support communication, but generics, combination products, packaging, and accessibility needs vary. Never identify a bottle by color alone. Read the full label at retrieval, preparation, and administration. For a patient with low vision, use accessible labeling and teach-back rather than asking the person to rely solely on cap color.

Instilling drops and ointment

Perform hand hygiene, explain the task, verify the eye, inspect the tip, and position the patient safely. With the patient looking up, gently lower the lid to expose the conjunctival sac without touching the globe. Instill the ordered amount without contacting lashes, skin, or ocular surface. Ask the patient to close the lids gently; use punctal occlusion only when ordered or instructed for that medication and patient. Do not squeeze the lids or press on a recently operated or injured eye.

For ointment, place the ordered thin ribbon in the lower conjunctival sac without tip contact, then warn about temporary blur. Mixing of a suspension, sequence of multiple drugs, interval between products, and contact-lens removal follow the label and order. A contaminated tip or shared single-patient product is handled under policy rather than wiped and returned automatically.

Document drug, concentration, eye, time, dose or drops, relevant checks, tolerance, and any refusal or omission. Escalate unexpected pain, breathing difficulty, faintness, marked pulse change, facial swelling, or acute vision symptoms.

Prescription and inventory controls

A valid prescription or medication order identifies the patient, date, drug, strength, dosage form, route and eye, directions, quantity or duration as applicable, refills, and authorized prescriber under current law and policy. Never invent a missing laterality or convert an ophthalmic product to an otic or oral formulation.

Separate look-alike and sound-alike products, retain lot and expiration traceability where required, rotate stock by expiration, and monitor the labeled temperature and light conditions. Quarantine an excursion, broken package, suspected counterfeit, recall, or uncertain beyond-use time. Appearance alone cannot establish potency or sterility.

Additional medication classes in the CRT blueprint

The technician recognizes why a class may be ordered, screens the relevant history, and observes for adverse effects without independently selecting therapy.

For drops and ointments, verify the label and order, wash hands, avoid touching the tip, instill into the conjunctival sac as directed, and document eye, agent, concentration, and time. Ointment is placed as a thin ribbon according to the order and can blur vision. If more than one product is ordered, separation and sequence come from the prescription, label, pharmacy, or facility protocol rather than a memorized universal interval.