Common questions

What is mydricaine?

What is mydricaine?

Mydricaine is a mydriatic agent used as a subconjunctival injection to maintain perioperative mydriasis. The drug consists of a mixture of 1.3 mg atropine sulphate, 0.12 mg adrenaline and 8.4 mg procaine hydrochloride in a single vial of 0.4 mL.

How do I give Mydricaine?

Mydricaine No. 2 is a drug formulation containing atropine sulphate 1 mg, adrenaline 0.12 ml of 1:1000, procaine hydrochloride 6 mg, boric acid 5 mg, sodium metabisulphite 0.1%, sodium chloride 0.32% and water for injection. It is given by subconjunctival injection when maximal pupil dilatation is required.

How do you give a subconjunctival injection?

Insert the needle into the space between the conjunctiva and the sclera. Ensure the bevel remains under the conjunctiva and inject the fluid slowly to create a ballooning effect (Figure ‚Äč4). Withdraw the needle carefully and ask the patient to close the eye – check that the eyelids can close properly.

What is injection in the eye?

An intravitreal injection is a shot of medicine into the eye. The inside of the eye is filled with a jelly-like fluid (vitreous). During this procedure, your health care provider injects medicine into the vitreous, near the retina at the back of the eye.

What are the drugs used for subconjunctival injection?

An alternative and potentially more effective technique consists of injection of nonirritating antibiotics (e.g., procaine penicillin G) under the dorsal or dorsolateral bulbar conjunctiva, using a 25-gauge needle (Figure 14.11).

Is conjunctiva and sclera same?

The conjunctiva contributes to the tear film and protects the eye from foreign objects and infection. The sclera is the thick white sphere of dense connective tissue that encloses the eye and maintains its shape.

Is eye injection painful?

Are these injections painful? Although most patients don’t experience pain, there can be a hot or cold feeling or a feeling of pressure which lasts for seconds. Often people see a swirling pattern or floating dark circles in their vision immediately after the injections. These tend to settle over minutes or hours.

Do eye injections really work?

Wet macular degeneration is an age-related disease. Clinical studies have documented a definite success of intraocular (into the eye) injections for wet macular degeneration. After one year of intraocular therapy, the vision improved by about 25-34% compared with 5% in those who did not choose intraocular injections.

Why is subconjunctival injection?

Subconjunctival injections are indicated for treatment of lesions in the cornea, sclera, anterior uvea and vitreous. Injection underneath the conjunctiva allows drugs to bypass the epithelium, one of the main barriers that limit drug entry.

How are mydricaine drops placed in the eye?

The patient receives topical anaesthetic drops into the eye. The lower lid is pulled downwards gently, and the first mydricaine-soaked pledget is placed securely with forceps into the inferior conjunctival fornix as the patient looks upwards ( fig 1A ).

When to use subconjunctival mydricaine for uveitis?

Subconjunctival mydricaine injections are used in routine practice in patients with uveitis to prevent the formation of permanent posterior synechiae. 1 Mydricaine No 2 (Moorfields Eye Hospital formulation) contains a combination of 6 mg procaine hydrochloride, 1 mg atropine sulphate and 0.12 ml epinephrine solution (1 in 1000).

Can a person with belonephobia take mydricaine?

Belonephobia, the abnormal fear of sharply pointed objects, especially needles, affects up to 10% of the population and has implications for treatment and follow-up. 2 We describe a very simple but effective method of administering mydricaine in needle-phobic, uveitic patients.

How much Tropicamide is in 1 mL of mydrane?

1 ml of solution for injection contains 0.2 mg of tropicamide, 3.1 mg of phenylephrine hydrochloride and 10 mg of lidocaine hydrochloride. One dose of 0.2 ml solution contains 0.04 mg of tropicamide, 0.62 mg of phenylephrine hydrochloride and 2 mg of lidocaine hydrochloride.

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