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Tenon's capsule (/ t ə ˈ n oʊ n /), also known as the Tenon capsule, fascial sheath of the eyeball (Latin: vagina bulbi) or the fascia bulbi, is a thin membrane which envelops the eyeball from the optic nerve to the corneal limbus, separating it from the orbital fat and forming a socket in which it moves.
Sheep eye lens capsule with ligaments attached. The capsule is lifting off the lens showing cell fiber ends beneath. Microscope image of lens capsule in relation to lens cell types. The lens capsule is a component of the globe of the eye. [1] It is a clear elastic basement membrane similar in composition to other basement membranes in the body.
Over time, it has been reported that many of the same drugs and eye drops used to treat particular eye diseases do, in fact, result in systemic side effects that could possibly be minimized or limited due to a slower, more sustained release of the drug. The systemic side effects of glaucoma medications such as latanoprost increased heart rate ...
Serious side effects may include allergic reactions and heart failure. [3] Use is not recommended in those with asthma, a sulfonamide allergy, or a slow heart rate. [3] [7] Dorzolamide is a carbonic anhydrase inhibitor and timolol is a beta blocker. [3] Both work by decreasing the amount of aqueous humor made by the eye. [3]
The most common side effects are hyperaemia (increased blood flow associated with redness, in 51% of patients) in the conjunctiva, cornea verticillata (drug deposits in the cornea, in 17%), and eye pain (in 17%). All other side effects occur in fewer than 10% of people. Hypersensitivity reactions occur in fewer than 1%. [2] [8]
Intrathecal administration is a route of administration for drugs via an injection into the spinal canal, or into the subarachnoid space so that it reaches the cerebrospinal fluid (CSF). It is useful in several applications, such as for spinal anesthesia, chemotherapy, or pain management. This route is also used to introduce drugs that fight ...
Side effects of dipivefrine include local eye reactions among others. Dipivefrine is a prodrug of epinephrine (adrenaline) and hence acts as a non-selective adrenergic receptor agonist . [ 5 ] It is a substituted phenethylamine and catecholamine and is an ester of epinephrine with much greater fat solubility .
[3] [5] As eye drops it is used to treat increased pressure inside the eye such as in ocular hypertension and glaucoma. [3] By mouth it is used for high blood pressure, chest pain due to insufficient blood flow to the heart, to prevent further complications after a heart attack, and to prevent migraines. [5] Common side effects with the drops ...