Anti-VEGF agents- a group of drugs (eg. avastin and lucentis) which inhibit the action of VEGF (vascular endothelial growth factor). VEGF is thought to be partly responsible for some types of damage that occur in ARMD and diabetic eye disease. This group of drugs is normally injected into the back part of the eyeball.
Aqueous- The watery substance filling the front part of the eye.
Artificial lens- This is used to replace the natural lens when it is removed during cataract surgery. Artifical lenses (intraocular lens implants- IOL), comes in many different focussing powers which are chosen based on measurements taken from the eye. Modern IOLs can be folded or rolled up so they can be inserted into the eye through an incision between 2 and 3 mm in size.
Conjunctiva- The colourless layer over the front part of the sclera.
Cornea- The transparent curved part of the front of the eye which contributes to the focussing of light on the retina.
Food supplements- Some food supplements have been shown to reduce progression of ARMD with specific features. These can be obtained from your pharmacist. A diet rich in green leafy vegetables is also recommended.
Fovea- The central part of the macula, responsible for detailed vision.
Freezing treatment- The medical name for this is cryotherapy. It is used to cause a permanent seal around a retinal tear to prevent fluid entering through the tear and causing redetachment.
Fundus fluorescein angiography- An investigation which involves injection of a dye into the bloodstream and a series of specialised photographs of the retina. This gives information about blood supply and vascular abnormalities in the retina.
Laser- A group of devices used to deliver energy to different parts of the eye. This energy can be in the form of visible light or invisible electromagnetic radiation. Lasers have many different applications in ophthalmology including the treatment of ARMD, glaucoma, and diabetic eye disease.
Lens- A structure inside the eye that contributes to the focussing of light on the retina.
Macula- The central part of the retina.
Oils, fluids and gases- These agents are used during vitreoretinal surgery to manipulate the retina and hold it in place whilst it is healing.
Optical Coherence Tomography- An investigation that produces a cross sectional image of the retina. This investigation is very useful in assessing the response to treatment for conditions such as age-related macular degeneration, diabetic eye disease and vascular diseases of the retina.
Optic Nerve- The large nerve which takes the electrical impulses from the retina to the brain.
Plastic components- These are attached to the outside of the eye to create "dents" in the sclera. This encourages the retina to reattach.
Retina- The multi-layered lining inside the back part of the eye which converts light impulses into electrical signals which are sent to brain along the optic nerve.
Sclera- The white outer covering of the eye.
Steroids- A group of drugs which can be useful in inflammatory conditions of the eye. This group of drugs can be administered by mouth, drops, injections behind the eye or injections into the back part of the eyeball.
Vitreoretinal surgery- This is a highly specialised type of eye surgery performed by surgeons who have been specifically trained in this area. Vitreoretinal surgeons operate in the posterior part of the eye and particularly on the retina.
Vitreous- The jelly-like substance filling the back part of the eye.
www.retinalspecialist.com The Virtual Home of Niladri (Ted) Saha 2009