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Biomedical subjects

W L Walter

Publications and source records attributed to W L Walter.

7 recordsLinked to original sources
PubMed1996

Screening of children with Down syndrome for atlantoaxial (C1-2) instability: another contentious health question.

Screening for atlantoaxial (C1-2) instability in children with Down syndrome before their participation in sport is called into serious question. Despite the lack of clear supporting data to justify screening, it has been widely recommended and enforced by some sporting organisations for several decades. Experience in New South Wales during the past 25 years strongly suggests that routine screening should be discontinued, and the existing literature supports this move.

Adolescent↗
PubMed1994

Another look at pterygium surgery with postoperative beta radiation.

Although complications associated with the use of beta radiation after pterygium surgery can occur, the author has found the use of beta radiation to be beneficial in preventing recurrences when used with pterygium surgery. An effective surgical regime of pterygium surgery is presented. A procedure made up of steps that tend to prevent revascularization of the operative site after pterygium surgery will decrease the recurrence rate. The use of strontium 90 and the mechanism of action of beta ray therapy in treatment of the pterygium is discussed. Few complications have occurred in > 200 surgically treated cases of pterygium with postoperative beta radiation administered with a strontium 90 applicator. No cases of radiation cataract have been observed.

Beta Particles↗
PubMed1985

Update on enucleation and evisceration surgery.

The best operative results with fewest complications after enucleation surgery can be achieved by following basic principles, some of which are those of conservative tissue excision, using spherical implants placed behind Tenon's capsule into the muscle cone and avoiding surgical techniques that overlap the extraocular muscles (especially the superior rectus) over the front of the implant. The presence of an intraocular tumor demands that an enucleation be done. When the possible development of sympathetic ophthalmia is not present, the surgeon should consider doing an evisceration because of the cosmetic and motility advantages. Mention is made of some developments in enucleation surgery, such as the scleral cap reinforcement, the "baseball" implant technique using donor sclera, the use of liquid nitrogen to freeze intraocular tumors before removal of the eye, the dermis-fat orbital graft, and the use of two spherical orbital implants instead of one.

Eye Enucleation↗
PubMed1982

The use of the pigtail probe for silicone intubation of the injured canaliculus.

The surgical technique of using a pigtail probe for silicone intubation of an injured canaliculus is described. Nineteen patients who had either chemical burns of the punctal orifices or lacerations of the canalicular structures were treated by this method of repair. The results were excellent; and functioning canalicular systems were obtained in all of the patients after surgical repair.

Burns, Chemical↗
PubMed1977

Complications associated with the orbital bead implant operation.

The primary objective of this paper is to suggest various precautionary measures in order to decrease the occurrence of possible complications associated with the orbital bead implant operation for anophthalmic "enophthalmos". It is important that the subperiosteal insertion of glass beads by used primarily in an anophthalmic orbit. A preoperative x-ray of the patient's orbit will help the surgeon decide the ideal location in making entry into the subperiosteal space. Cautious dissection of the subperiosteal pocket is important in order to avoid damage to the levator muscle, blood vessels and nerves of the orbit. An accurate and careful positioning of the bead inserter is necessary in order to deposit the beads properly into the posterior portion of the subperiosteal space.

Blepharoptosis↗
PubMed1977

Surgical correction of the lateral canthal deformity associated with anophthalmic "enophthalmos".

In order to correct the lateral canthal and lower eyelid deformities associated with anophthalmic "enophthalmos", this paper proposes that a surgical modification of the bead implant operation be used in order to reposition the lateral canthal tendone to a higher level than its preoperative location. The surgical technique is described, and its usefulness in correcting similar lateral canthal deformities associated with fracture dislocations of the zygoma is mentioned.

Eye Injuries↗