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Surgery	Lens Luxation
Corneal Surgery: Corneal laceration, corneal ulceration, corneal perforation, corneal transplantation, corneal sequestrum.		The lens in the eye allows light to travel through the eye and stimulate the retina (the light receptors of the eye). The lens is held in place by the zonule (a biological elastic band) just behind the iris. "Lens luxation" indicates that the lens has become loose (due breakdown of the zonule) in the eye and moved to the front (anterior) or back (posterior) of the eye. If the lens moves in the eye the pressure in the eye may become elevated (glaucoma). Glaucoma is a potentially blinding disease in animals. Surgical removal of the displaced lens is recommended. Observant owners may notice a tremor of the pupil (iridodonesis) somewhat resenbling the appearance seen by tapping a bowl of Jello with the back of a spoon.
Dry Eye Surgery: Parotid Duct Transposition.
Eyelid Surgery: Entropion, Eyelid Tumors, Eyelash disorders, Eyelid Coloboma, Eyelid Defects.		Most dogs which develop lens luxation are young dogs, which have an inherited predisposition (defect in the zonule). In the breeds where the inheritance has been studied in detail, the mode of inheritance was proven to be autosomal recessive. This implies that the defective gene must be passed on by both the sire (father) and the dam (mother) to produce an affected animal.
Lens Surgery: Cataract surgery, Lens Luxation.		The most common breeds affected include: Jack Russel (Parson) Terrier Rat Terrier Tibetan Terrier SealyhamTerrier Fox Terrier Shar Pei
Glaucoma Surgery: Glaucoma Shunt placement, Laser Surgery.
Vitreo-Retinal Surgery: Vitrectomy, Laser Surgery.
Eyeball surgery: Enucleation, Evisceration, Exenteration.			Anterior lens luxation in a Rat terrier. Note the lens is in front of the iris.
		Owners of dogs predisposed to lens luxation, which show signs of pain, tearing or redness of the eye should contact a veterinary ophthalmologist to schedule an ocular examination. As is true in some many eye diseases, prompt accurate diagnosis and treatment are essential to prevent vision loss. In some dogs a plastic lens (implant) may replace the diseased lens which is removed during lens luxation surgery. The possible complications after surgery include retinal detachment and glaucoma (high pressure in the eye) and these complications may lead to blindness. In cats, lens luxation is often related to chronic inflammation (uveitis) of the eye. Cats with lens luxation are good candidates for lens removal surgery although easily administered long term anti-inflammatory treatment may be necessary following surgery.
Animal Eye Clinic 204 Medford-Mt. Holly Rd (Rt 541) Medford, NJ 08055-9623 Phone (609) 654-0304 - Fax (609) 714 1479