The Utility of Preoperative Phenylephrine Testing in Müller Muscle Conjunctival Resection Surgery for Involutional Ptosis.

Purpose: Phenylephrine testing prior to Müller muscle conjunctival resection has traditionally been used to predict postoperative outcomes. The purpose of this study is to determine if preoperative phenylephrine testing impacts postoperative changes in eyelid position.

Methods: In this multicenter cross-sectional cohort study, 270 eyelids of participants with involutional ptosis and levator function >12 mm who underwent Müller muscle conjunctival resection were divided into 2 comparison groups.

The Utility of Preoperative Phenylephrine Testing in Müller Muscle Conjunctival Resection Surgery for Involutional Ptosis.

Purpose: Phenylephrine testing prior to Müller muscle conjunctival resection has traditionally been used to predict postoperative outcomes. The purpose of this study is to determine if preoperative phenylephrine testing impacts postoperative changes in eyelid position.

Methods: In this multicenter cross-sectional cohort study, 270 eyelids of participants with involutional ptosis and levator function >12 mm who underwent Müller muscle conjunctival resection were divided into 2 comparison groups.

Hypoglobus, Exophthalmos, and Interpupillary Distance: Measuring Globe Dystopia in Thyroid Eye Disease.

Purpose: Thyroid eye disease (TED) is characterized by a variety of disfiguring periocular changes. Vertical globe changes affecting the relative position of the eyelids are not well understood in patients with TED. This study seeks to determine the effect of orbital decompression on vertical globe displacement in patients with TED, without TED, and with intraconal tumor (ICT).

Lacrimal hyperalgesia: a case series of post-operative painful lacrimation.

Lacrimal hyperalgesia is a rare type of periorbital neuralgia triggered by tear production. Two female patients in their mid-forties underwent orbital surgery and, several weeks following their procedures, developed pain when they produced tears. The symptom was described as a sharp, debilitating, and transient periocular pain.

Estimating apparent age using artificial intelligence: Quantifying the effect of blepharoplasty.

Objectives: Quantify the rejuvenation effect of blepharoplasty.

Methods: A dataset of facial photographs was assembled and randomly split into 90% training and 10% validation sets. An artificial intelligence model was trained to input a facial photograph and output the apparent age of the depicted face.

Clinical and demographic predictors of buccal fat pad volume in thyroid eye disease.

Purpose: To understand how thyroid eye disease (TED) impacts buccal fat pad (BFP) volume.

Methods: In this cohort study, computed tomography (CT) scans and charts of adult patients with and without TED were obtained from an institutional database. The primary outcome was BFP volume in cubic centimeters.

Glue Embolization Without Surgical Resection for Orbital Venolymphatic Malformation.

A 59-year-old man presented with worsening left-sided eye pain and headache from a left orbital venous-dominant venolymphatic malformation. He reported a history of sclerotherapy, experiencing only transient relief with this procedure. Oral analgesia had not helped alleviate the pain.

Most canine ameloblastomas harbor HRAS mutations, providing a novel large-animal model of RAS-driven cancer.

Canine acanthomatous ameloblastomas (CAA), analogs of human ameloblastoma, are oral tumors of odontogenic origin for which the genetic drivers have remained undefined. By whole-exome sequencing, we have now discovered recurrent HRAS and BRAF activating mutations, respectively, in 63% and 8% of CAA. Notably, cell lines derived from CAA with HRAS mutation exhibit marked sensitivity to MAP kinase (MAPK) pathway inhibitors, which constrain cell proliferation and drive ameloblast differentiation.