Advances in ophthalmic plastic and reconstructive surgery最新文献

The treatment of severely contracted sockets represents one of the most difficult situations in ophthalmic plastic and reconstructive surgery. In particular, the treatment of the postirradiated socket has been considered "hopeless surgery." In recent years a modified approach to this problem has been tried, in which the use of the temporalis muscle provided a well-vascularized bed for delayed reconstructions.

A technique using the frontalis muscle to reconstruct the exenterated orbit is described. The technique is simple and does not leave a depression in the temporalis fossa.

Autogenous dermis-fat grafts implanted within the orbit survive best, with little loss of volume, when they are placed within Tenon's capsule immediately following the removal of the globe; when the rectus muscles (and anterior ciliary arteries) are anastomosed to the dermal edge of the graft; when no cautery has been applied to the recipient bed; and when the anterior diameter of the graft is no larger than 22 mm. Primary grafting in patients without systemic vascular disease is more effective than secondary procedures, performed on patients with fibrotic, compromised recipient beds and without direct apposition of the rectus muscles to the graft.

The authors describe the techniques for subtotal, total and radical orbital exenteration. The aspects of primary and late reconstructive surgery are also discussed, with special reference to Frezzotti's personal technique for temporalis muscle transplantation after subtotal exenteration.

This paper includes the historical development of the modern-day facial prosthesis, the various materials used from the early days to the present, and the historical input of various people and their contributions towards the development of the qualities in fabricating a lifelike facial prosthesis.

Indications for the mutilating operation of exenteration are enumerated. They usually involve a malignant neoplasm of the orbital contents, primary, direct extension, or adnexal tissue that cannot be controlled by simple excision or irradiation. Surgically, subtotal exenteration with partial preservation of lids and even conjunctiva may be achieved occasionally. However, total exenteration may be lifesaving. Techniques and precautions are discussed. Advantages and disadvantages of skin grafting that influence the post-operative care are noted.

The congenitally contracted socket often poses a challenging management problem; early surgery may be necessary in spite of the attendant difficulties. A series of patients is presented, with particular emphasis upon the use of a new hydrophilic expander in the severely contracted socket, to illustrate our current management protocol. Factors pertinent to orbital development and growth are discussed. Two types of contracted sockets are identified that appear to correlate with the presence or absence of an eye or ocular remnant. Use of a hydrophilic expander in the severely contracted anophthalmic socket with marked lid phimosis has enabled subsequent fitting and retention of a hard conformer in many of these cases, thus obviating early interventional surgery.

Two cases of congenital symblepharon (variant of cryptophthalmos) are reported. Cryptophthalmos is a very rare congenital defect, with incomplete or complete failure in the development of one or both eyelids with skin recovering the anterior segment. Surgical treatment is described including expansion of the conjunctival fornix with eyeball conservation if possible. At the same time or later, the upper eyelid is reconstructed by inferior eyelid flap. The ophthalmic features of cryptophthalmos and its systemic associations are reviewed.