Medial canthoplasty for optimum support of the lower eyelid in 14 patients.

Ophthalmic Surg Lasers

Department of Ophthalmology, UMDNJ Medical School, Newark 07103-2499, USA.

Published: October 1996

Background And Objectives: Medial canthoplasty surgically fuses the upper and lower lids medial to the puncta. The authors modified the procedure by inserting a temporary lacrimal stent in order to avoid kinking and scar contracture of the canaliculi.

Patients And Methods: A medial canthoplasty successfully corrected lower eyelid laxity in 14 patients with the following conditions: (1) exposure and/or neurotrophic keratitis with medial ectropion and/or retraction of the lower eyelid (11 patients), and (2) inability to retain a prosthesis because of lower eyelid ectropion and contracture of the inferior conjunctival fornix (3 anophthalmic patients).

Results: All patients had a satisfactory cosmetic result despite minimal vertical and horizontal narrowing of the palpebral fissure. Complications included partial wound dehiscence and pyogenic granuloma.

Conclusion: The modified medial canthoplasty described in this article corrects medial ectropion with minimal cosmetic deformity.

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Article Synopsis
  • A new modified medial canthoplasty (MCP) technique was introduced for dogs, aiming to address issues like macroblepharon and nasal entropion common in brachycephalic breeds.
  • The study involved 601 dogs and analyzed postoperative complications, revealing a low overall complication rate of 1.01%, with minimal cases of wound dehiscence and corneal ulceration.
  • The findings suggest that this simplified MCP technique is effective and safe for treating eyelid problems in dogs, with no serious complications reported.
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Aesthetic Asian double eyelid surgery: Exploring a novel indication for microsurgery.

J Plast Reconstr Aesthet Surg

August 2024

Division of Plastic and Reconstructive Surgery, Department of Surgery, China Medical University Hospital, Taichung, Taiwan; International Center, China Medical University Hospital, Taichung, Taiwan. Electronic address:

Asian double eyelid blepharoplasty and medial canthoplasty aim to enhance eye appearance in individuals of Asian descent. Traditional methods have limitations and may cause complications. This study introduces a microsurgical approach, offering improved precision and reduced scarring, applied to 37 patients over six years.

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Brachycephalic breeds have increased in popularity despite growing awareness of their predisposition to a wide range of conformation-related diseases. The extreme facial conformation of many popular brachycephalic breeds compromises their ocular surface health, increasing the risk of painful corneal ulceration. Medial canthoplasty (MC) is a surgical procedure to address ocular abnormalities in brachycephalic dogs, which are collectively referred to as brachycephalic ocular syndrome (BOS).

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Purpose: Severe entropion of the medial canthus results in ocular surface diseases and tear staining syndrome. However, detailed anatomical structures of the medial canthus and lacrimal ducts in dogs are poorly understood. We aimed to understand the anatomical structures of the medial canthus by analyzing the distances from the medial palpebral commissure to the superior lacrimal punctum (DSP) and to the inferior lacrimal punctum (DIP) and by histological examinations of the medial canthal anatomy.

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Objective: To characterize the ocular surface parameters and determine the prevalence of ocular pathology in Shih Tzu dogs.

Animal Studied: Fifty Shih Tzu dogs (28 male, 22 female).

Procedures: Each dog underwent a complete ophthalmic examination (recording any pathology) and a series of diagnostics, allowing for a 10 min-interval between tests: intraocular pressure (IOP), blink rate, palpebral fissure length (PFL), corneal tactile sensation (CTS), Schirmer tear test and nasolacrimal reflex without (STT-1, NL-STT1) and with topical anesthesia (STT-2, NL-STT2), tear ferning, strip meniscometry test (SMT), tear film breakup time (TFBUT), and punctate fluorescein staining (PFS) of the cornea.

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