Кански Клиническая офтальмология

Brow ptosis correction

Brow ptosis frequently accompanies dermatochalasis (Fig. 1.78A) and may also follow facial nerve palsy or localized trauma. Lifting of the brow needs to precede or occasionally be combined with upper lid blepharoplasty.

  • Direct brow lift. An incision is made above the eyebrow hairs and an ellipse of skin removed (Fig. 1.78B).

  • Endoscopic brow lift. Small incisions within the hair-line enable endoscopic elevation of the whole forehead tissues and release at the eyebrow periosteum to allow lifting of the eyebrows through sutures supported on frontal bone anchors within the hair-line.

CONGENITAL MALFORMATIONS

Epicanthic folds

Epicanthic folds are bilateral vertical folds of skin that extend from the upper or lower lids towards the medial canthi. They may give rise to a pseudoexotropia. The folds may involve the upper or lower lids or both; lower lid folds extending upwards to the medial canthal area (epicanthus inversus – Fig. 1.79A) are associated with the blepharophimosis syndrome. Treatment is by V–Y (Fig. 1.79B) or Z-plasty.

Telecanthus

Telecanthus is an uncommon condition that may occur in isolation or in association with blepharophimosis and some systemic syndromes. It consists of increased distance between the medial canthi due to abnormally long medial canthal tendons (Fig. 1.80). It should not be confused with hypertelorism in which there is wide bony separation of the orbits. Treatment involves shortening and refixation of the medial canthal tendons to the anterior lacrimal crest, or insertion of a trans-nasal suture.

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Рисунок со страницы 70
Рисунок со страницы 70
Рисунок со страницы 70

Fig. 1.77 (A) Mild dermatochalasis and excess lower lid skin; (B) appearance following upper and lower lid blepharoplasty (Courtesy of A Pearson)

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Рисунок со страницы 70

Fig. 1.76 (A) Severe dermatochalasis causing reduction of upper visual field; (B) appearance following surgery (Courtesy of A Pearson)

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Рисунок со страницы 70

Fig. 1.79  Epicanthus inversus. (A) Preoperative appearance; (B) immediately after V–Y plasty (Courtesy of R Bates – fig. B)

Fig. 1.78 (A) Right brow ptosis and dermatochalasis; (B) following direct brow-lift