The microscopic anatomy of the lower eyelid retractors.

Twenty-two normal lower eyelids were studied microscopically to examine the normal anatomy of the lower eyelid retractors. Eight lower eyelid specimens from patients with involutional entropion and five from patients with involutional ectropion were studied also. In the normal eyelids, the inferior tarsal muscle consisted of scattered smooth-muscle fibers and did not insert on the tarsus. The orbital septum fused with the capsulopalpebral fascia 5 mm beneath the lower tarsal border to form a single, complex fascial layer. In the involutional entropion and ectropion cases, the fused capsulopalpebral fascia-orbital septum complex was attached to the tarsus in all specimens. The first identifiable smooth-muscle strands of the inferior tarsal muscle averaged 3.9 mm from the lower tarsal border in entropion cases, 4.5 mm in ectropion cases, and 2.5 mm in the normal eyelids.

[1]  L T Jones,et al.  A new concept of the orbital fascia and rectus muscle sheaths and its surgical implications. , 1968, Transactions - American Academy of Ophthalmology and Otolaryngology. American Academy of Ophthalmology and Otolaryngology.

[2]  J. Collin,et al.  Involutional Entropion: A Review With Evaluation of a Procedure , 1978 .

[3]  J. L. Smith,et al.  Mechanics and histology of senile entropion. , 1966, The British journal of ophthalmology.

[4]  L. T. Jones,et al.  Senile Entropion* *From the Devers Memorial Eye Clinic, Good Samaritan Hospital. , 1963 .

[5]  J. Wobig,et al.  Senile entropion. A new concept for correction. , 1972, American journal of ophthalmology.

[6]  R. Dryden,et al.  Senile entropion. Pathogenesis and treatment. , 1978, Archives of ophthalmology.

[7]  A. Putterman.  Ectropion of the lower eyelid secondary to Müller's muscle-capsulopalpebral fascia detachment. , 1978, American journal of ophthalmology.

[8]  G. Labay,et al.  Senile ectropion and entropion: a comparative histopathological study. , 1976, Annals of ophthalmology.

[9]  T. Stevens,et al.  Nonsurgical management of blow-out fractures of the orbital floor. , 1974, American journal of ophthalmology.

[10]  F. Blodi.  Eugene Wolff's Anatomy of the Eye and Orbit , 1977 .

[11]  J. L. Hargiss.  Inferior aponeurosis vs orbital septum tucking for senile entropion. , 1973, Archives of ophthalmology.

[12]  F. Blodi,et al.  Spatial Aspects of Orbital Musculo-Fibrous Tissue in Man , 1977 .

[13]  A. Putterman,et al.  Surgical anatomy of the orbital septum. , 1974, Annals of Ophthalmology.

[14]  L. T. Jones.  The anatomy of the lower eyelid and its relation to the cause and cure of entropion. , 1960, American journal of ophthalmology.