Horizontal Palpebral Fissure Research Articles

Acquired Ankyloblepharon Correction Using Ocular Surface and Tarsal Mucous Membrane Grafting in Cicatrizing Ocular Surface Diseases

Purpose: To report the long-term surgical outcomes of acquired ankyloblepharon correction using mucous membrane graft. Methods: Five eyes of 4 patients (median age, 19 years) with acquired ankyloblepharon were managed using eyelid splitting and mucous membrane graft anchored to the recti muscles on the bulbar surface in the respective quadrant and onto the bare tarsal surface. Outcome measures include a change in the palpebral fissure width, ability to fit scleral contact lenses, visual acuity, and cosmesis. Results: The underlying etiologies of ankyloblepharon were chronic Stevens-Johnson syndrome (n = 3), and chemical injury (n = 2). All 5 eyes had conjunctival shortening, and 3 had severe dry eyes (median Schirmer 4.5 mm). Four eyes had limbal stem cell deficiency. The median horizontal palpebral fissure width improved to 22 mm from 8 mm. This single-staged surgical technique allowed for fornix formation and prosthetic replacement of the ocular surface ecosystem lens fitting in all 5 eyes. Median logMAR visual acuity improved from 2.1 to 0.7 following ankyloblepharon release, prosthetic replacement of the ocular surface ecosystem lens fitting in 4 eyes, and keratoprosthesis in 1 eye. Repeat mucous membrane graft for recurrent symblepharon in 1 quadrant was required in 2 eyes where complete 360 degrees bulbar and tarsal conjunctiva loss were present preoperatively. At the median follow-up period of 27 months, all patients reported better cosmesis and had no symblepharon recurrence following repeat surgery in 2 eyes and single surgery in 3 eyes. The donor site healed well without any complications. No mitomycin C or symblepharon ring was used. Conclusion: Ocular surface and adnexal reconstruction using bulbar and tarsal mucous membrane grafts help visually rehabilitate patients with acquired ankyloblepharon secondary to cicatrizing ocular surface disorders.

Determining Asymmetry Thresholds in Anophthalmia/Microphthalmia Using a Three-dimensional Animated Model.

Congenital microphthalmia and anophthalmia are rare development disorders with underdevelopment of the orbital region, resulting in asymmetry of the face. No clear guidelines exist to determine when these deviations are acceptable. The face of a healthy 6-year-old child was three-dimensionally scanned. On this scan, we modeled various incremental degrees of facial asymmetries using three-dimensional modeling software. We modeled for smaller palpebral fissures, sunken eyes, and downward displacement of the eye. We also tested whether adjusting the vertical palpebral fissure height in relation to the horizontal palpebral fissure width affected perception. A total of 22 videos were created in which the model turned the head horizontally and vertically. We created a questionnaire asking raters how acceptable the face is, on a linear scale from 0 to 10. Results showed a correlation between the degree of asymmetry and the acceptability score of the raters. Enophthalmos of ≥6 mm, palpebral fissure width ≤79% compared with the other eye, and 2 mm or more downward displacement of the eye resulted in a significant different acceptability score. The desire for correction was strongly increased when these thresholds were exceeded. Adjusting the vertical palpebral fissure height to the horizontal palpebral fissure width resulted in a worse acceptability score. A unilateral sunken eye (enophthalmos) of 6 mm or more, asymmetric horizontal palpebral fissure length of ≤79%, and a lower position of one eye of more than 2 mm resulted in unacceptable judgment. These data can be used to evaluate treatment outcome in children treated for congenital microphthalmia and anophthalmia.

Comparative analysis of ocular biometry, ocular protrusion, and palpebral fissure dimensions in brachycephalic and nonbrachycephalic dog breeds.

This study compared skull morphology and ocular parameters in brachycephalic (BC, n=16) and nonbrachycephalic (NB, n=16) dogs using head CT scans. The results of a Schirmer tear test I (STT I), intraocular pressure (IOP), ocular biometry, external structure, ocular protrusion, and palpebral fissure dimensions were evaluated and compared between BC and NB dogs. There were no statistically significant differences in the STT I results, IOP, globe dimensions, globe volume, internal structure, and external structure between BC and NB dogs (P>.05). Brachycephalic dogs exhibited significantly greater ocular protrusion and significantly larger palpebral fissure dimensions compared with NB dogs. For all dogs, we found a strong positive correlation between globe volume and body weight (r=0.836, P=.0000). The globe volumes, external structure parameters, and ocular protrusion were normalized by body weight and were also significantly larger in BC dogs compared with NB dogs (P<.001). The ocular protrusion (r=0.521, P<.0000) and horizontal palpebral fissure (r=0.372, P=.0024) showed a moderate positive correlation with the cephalic index (CI). Additionally, normalized globe volume (r=0.435, P=.0003), normalized orbital depth (r=0.419, P=.0005), and normalized retrobulbar depth (r=0.444, P=.0002) had a moderate positive correlation with the CI. The study emphasizes how the distinctive skull structure of BC dogs, with shortened facial bones and thickened retrobulbar soft tissue, influences their ocular appearance and raises the risk of eye problems.

Levator Resection in Neurogenic Ptosis Oculi Sinistra et causa Third Nerve Paresis + Type II Diabetes: A Case Report

Introduction : Neurogenic ptosis is abnormal position of the upper eyelid caused by dysfunction or damage to the oculomotor or sympathetic nerves supplying the eyelids. Third nerve palsy (35.7%) is the most common cause among others. We report a case of neurogenic ptosis managed surgically by levator resection.&#x0D; Case Illustration : A 67-year-old male complained of drooping left upper eyelid, getting worse in 7 months. He had history of falling off motorcycle 6 months ago. Clinical histories of hypertension and diabetes mellitus were found. Right and left eyelids measurements in millimeter showed horizontal palpebral fissure (HPF) 28/26, vertical palpebral fissure (VPF) 6/3, margin reflex distance 1 (MRD1) 2/-2, margin reflex distance 2 (MRD2) 6/5, margin limbal distance (MLD) 8/4, and levator function (LF) 8/3. Bell’s phenomenon was negative in both eyes. Ice pack test was negative. There were ocular movement restriction in his left eye. Patient underwent a maximum levator resection and had better levator function after 3 weeks follow up.&#x0D; Discussion : Neurogenic ptosis caused by third nerve injury is associated with microvascular ischemia such as diabetes mellitus and hypertension. Operative management is carried out after 3 to 6 months observation. Evaluation of levator function allows the clinician to correctly classify the degree and type of ptosis. Maximal levator resection is the treatment of choice for ptosis with poor levator function.&#x0D; Conclusion : Although various surgical techniques have been developed, ptosis correction should be performed according to the indications and clinical condition of the patient.

Ophthalmic Parameters of Healthy Captive Blue-Tongued Skinks (Tiliqua scincoides)

Abstract Normal ophthalmic parameters of the blue-tongued skink (Tiliqua scincoides), one of the largest members of the skink family of lizards, have yet to be evaluated. The objective of this study was to establish baseline ophthalmic parameters for a captive population of 12 healthy, one year old, blue-tongued skinks. Ophthalmic examination, corneal touch threshold, tear production including phenol red thread test (PRTT) and modified Schirmer tear test-2 (mSTT-2), horizontal palpebral fissure length (HPFL), rebound tonometry (TONOVET and TONOVET Plus), and bacterial and fungal culture were performed. The blue-tongued skinks were all amenable to ocular diagnostic testing. Corneal touch threshold (mean ± SD) was 5.48 ± 0.81 cm. PRTT (mean ± SD) was 9.17 ± 6.62 mm/15 seconds. mSTT-2 (mean ± SD) was 2.54 ± 2.72 mm/60 seconds. HPFL (mean ± SD) was 6.96 ± 0.62 mm and was positively correlated with body weight. Intraocular pressure (IOP) assessed using TONOVET (mean ± SD) was 8.43± 1.51 mmHg, while IOP assessed using TONOVET Plus (mean ± SD) was 12.39± 1.54 mmHg. Differences in TONOVET and TONOVET Plus tonometry values were statistically significant (P&amp;lt;0.0001) and TONOVET values positively correlated with body weight. The most common bacterial species identified were Staphylococcus xylosus (10/12) and Staphylococcus sciuri (8/12). Fungal cultures were all negative. One animal had superficial corneal ulceration which resolved with treatment. Ophthalmic examination and testing is readily performed in blue-tongued skinks. These parameters may be useful for ocular assessment of this species in a clinical setting.

Medmont Meridia™: Much More Than a Corneal Topographer.

In recent years, advanced diagnostic instruments have become widely available in optometric practices, offering various functions that optimize clinical information gathering. This article focuses on the Medmont Meridia™, a state-of-the-art multipurpose diagnostic device with corneal topography and cutting-edge features. Corneal topography is pivotal in the early diagnosis of corneal disorders, determining baseline ocular surface assessment, helping in contact lens fitting, and monitoring ocular health over time. The Medmont Meridia boasts Placido-disc-based imaging with extensive corneal coverage. Furthermore, the Meridia accurately measures the horizontal visible iris diameter, pupil diameter, and palpebral fissure width, which assists in making contact lens parameter decisions. Additionally, it offers sagittal height data for scleral lens design and first lens selection, streamlining the fitting process. Beyond its topography capabilities, the Meridia excels as a comprehensive dry eye assessment tool. With features like tear meniscus height, tear film surface quality, and meibography capabilities, it aids in diagnosing dry eye and monitoring its progression. The device also provides customizable dry eye reports with integrated grading scales and questionnaires, making dry eye management, patient education, and compliance more accessible. In conclusion, the Medmont Meridia consolidates a multitude of examination tools in a single instrument, enhancing practice efficiency and elevating patient care and communication. Its versatility and accuracy make it an invaluable asset in optometric practices worldwide.

Improvement of 1-Stage Comprehensive Operation Technique for Blepharophimosis-Ptosis-Epicanthus Inversus Syndrome.

This retrospective case series presents the clinical results of a modified 1-stage comprehensive surgical method for blepharophimosis-ptosis-epicanthus inversus syndrome (BPES). A total of 25 patients with BPES underwent a modified reverse Z-plastic surgery method to bisect the epicanthus into 2 unequal V-shaped flaps and suture them alternately. The medial canthus ligament was partially incised, shortened, and sutured; the outer canthus was opened with a V-Y flap. The gray line of the outer canthus was cut to extend the eyelid margin length. Ptosis was corrected using the orbicularis oculi-frontalis composite flap technique. We studied the inner intercanthal distance (IICD), interpupillary distance (IPD), horizontal palpebral fissure length (HPFL), marginal reflex distance 1 (MRD-1), IICD/IPD ratio, IICD/HPFL ratio, Vancouver Scar Scale, and overall postoperative satisfaction. The 25 patients included 12 girls and 13 boys (mean age, 8.3 ± 6.8 years), 19 of whom had a family history of BPES. The mean IPD value was 50.15 ± 7.43 mm. IICD decreased from 39.38 ± 2.39 mm preoperatively to 31.64 ± 2.37 mm postoperatively, IICD/IPD from 0.8 ± 0.1 preoperatively to 0.6 ± 0.1 postoperatively ( P < 0.05), and IICD/HPFL from 1.98 ± 0.33 preoperatively to 1.22 ± 0.10 postoperatively ( P < 0.01). HPFL increased from 20.08 ± 3.53 mm preoperatively to 26.04 ± 1.36 mm postoperatively ( P < 0.01), and MRD-1 from -1.12 ± 0.71 mm preoperatively to 3.24 ± 0.47 mm postoperatively ( P < 0.01). The postoperative Vancouver Scar Scale score was 3.68 ± 1.07. Patient satisfaction was rated as 8.8 ± 1.08, with a relatively high overall satisfaction rate. The corrective effect on BPES was noticeable, improving the IICD/HPFL and IICD/IPD ratios. Postoperative scars were not evident, and patient satisfaction was high. Therapeutic, IV.

Using Artificial Intelligence to Quantify Sexual Dimorphism in Aesthetic Faces: Analysis of 100 Facial Points in 42 Caucasian Celebrities.

Sexual dimorphism has been studied in the faces of average populations and worldwide celebrities; however, a focused analysis of attractive Caucasian faces has not been conducted. The study harnesses the power of artificial intelligence (AI) to efficiently analyze these facial patterns in attractive Caucasian male and female celebrities. Twenty-one male and 21 female Caucasian celebrities were selected based on popular editorial rankings, modeling agencies, and casting directors from 2017 to 2022. Frontal photographs of celebrities aged 23 to 42 without facial animation were selected. One hundred facial landmarks were identified using semi-automatic image analysis software consisting of modified Apple Vision (Cupertino, CA) machine-learning algorithms with additional custom landmarks. Measurements were converted to absolute distances by fixing subjects' white-to-white corneal diameters to the validated average in Caucasians. Attractive females had significantly greater upper and middle facial proportions, more uniformly divided facial thirds, and greater canthal tilt compared with males. Attractive males had significantly greater facial height, bizygomatic and bigonial widths, medial and total brow lengths, and alar width than females. The golden ratio (1.618) was observed in the ratio of facial height to bigonial width in females (1.613), and attractive males closely approximated that ratio (1.566). There were no significant differences in interpupillary distances, eyebrow angles, or horizontal palpebral fissure lengths. No faces in either sex exhibited scleral show. The study is the first to utilize AI in quantifying key sexual dimorphisms among Caucasian celebrity faces. Identifying these contemporary patterns may provide valuable considerations in planning facial aesthetic and gender affirmation surgery.

Application of topical rocuronium bromide dosing by ocular size in four species of wild birds.

Rocuronium bromide has been evaluated as a mydriatic agent in birds, but the species applied were limited and the dose and effect were variable. This study aims to evaluate the efficacy of topical rocuronium bromide as mydriatics in 4 species according to horizontal palpebral fissure length: Feral pigeon (Columba livia), Common kestrel (Falco tinnunculus), Northern boobook (Ninox japonica), and Eurasian eagle owl (Bubo bubo). A total of 32 birds (8 for each species) were included as pre-releasing examination. Rocuronium bromide was instilled in one randomly selected eye of each bird based on palpebral fissure length criteria (0.5 mg/50 µL for pigeons, 1 mg/100 µL for kestrels and boobook owls, and 2 mg/200 µL for eagle owls). The contralateral eye was used as control and treated with normal saline. After instillation of the drug, pupil diameter, pupillary light reflex, intraocular pressure, heart rate, and respiratory rate were evaluated at 10 min intervals up to 180 min and at 30 min intervals up to 360 min. Statistically significant mydriasis was obtained in all birds (p < 0.001). However, in boobook and eagle owls, marked mydriasis persisted until 360 min. Side effects including corneal erosion and lower eyelid paralysis were common, which was observed in 26/32 birds. Blepharospasm was also noted during this study. No systemic adverse signs were observed. Rocuronium bromide could be a good mydriatics option for 4 species of birds, however, further studies are needed to find lowest effective dose to reduce drug-related side effects.

Kombinasi Injeksi Triamsinolon Asetat Intralesi dan Propanolol Oral pada Kasus Hemangioma Kapiler Palpebra

Capillary hemangioma is a benign tumor developed from the abnormal proliferation of blood vessels. This tumor appears on eyelids and orbit. Around 75% of hemangioma resolves spontaneously in the first 4-5 years of life. Intervention is needed in hemangioma that obstructs the visual axis. It has been reported that a two-year-old girl came to Polyclinic with a mass on the left superior eyelid 1,5 years ago. At first, the left superior eyelid looked puffy, then developed slowly until it covered the left eye. On the examination of the left eye, visual acuity assessment was hard to perform. Mass in superior palpebral was 8mm x 8mm x 8mm, reddish colored (different with adjacent skin), consistency supple, mobile, painful (-), edema (+), horizontal palpebral fissure (FPH) 30 mm, vertical palpebral fissure (FPV) 0 mm. CT scan showed suspected hemangioma. The patient was diagnosed with capillary hemangioma and given an injection of triamcinolone acetate intralesional and oral propranolol under the supervision of a pediatrician. Significant clinical improvement was observed after 40 days of injection, where the mass was resolved completely. The FPV and FPH of the left eye had improved to 9 mm and 30 mm, respectively, with the patient finally able to follow the object. The combination of intralesional triamcinolone acetate and oral propranolol in this case is quite effective in providing complete resolution of capillary hemangioma.Keywords: capillary hemangioma, triamcinolone acetate injection, propanolol

Socket expansion with conformers in congenital anophthalmia and microphthalmia

To report the outcomes of acrylic conformer-assisted socket expansion in congenital anophthalmia and microphthalmia. In this noncomparative, interventional case series, the medical records of 24 eyes of 18 consecutive patients with congenital anophthalmia (n = 3), clinical anophthalmia (n=8), and microphthalmia (n = 13) were reviewed retrospectively. Twelve cases were unilateral; 6 were cases bilateral (3 clinical anophthalmia and 3 microphthalmia). Serial socket expansion with progressively larger acrylic conformers was managed in clinic. Horizontal palpebral fissure (HPF) width was graded as good (final HPF ≥20 mm, or interocular difference ≤2 mm for unilateral cases), fair (17-19 mm, or 3 mm interocular difference), or poor (<17 mm, or ≥4 mm difference). The mean initial lid lengths in anophthalmia, clinical anophthalmia, and microphthalmia were 11.0, 12.4, and 16.9, increasing to 21.0, 19.9, and 22.2, respectively, over a mean period of 51 months. Mean age at the initiation of treatment was 19 months (range, 1-78). Percentage increases in lid length were 90.9%, 61.2%, and 31.3% in anophthalmia, clinical anophthalmia, and microphthalmia, respectively, with an average 7 conformer exchanges. For unilateral cases, the mean final lid length of involved eyes was 22.3 mm, comparable to 23.5 mm in normal contralateral eyes. Good outcomes were achieved in 18 orbits (75%); fair outcomes, in 6 (25%) cases. None of the sockets had poor expansion at final follow-up. All cases had good cosmesis with acceptable prosthesis wear at last visit. In our patient cohort, good socket expansion was achieved with acrylic conformers alone in congenital anophthalmia and microphthalmia, with acceptable prosthesis wear.

Clinical Characteristics of Post-surgical Ptosis Patients at Dr. Mohammad Hoesin General Hospital Palembang

Introduction: Blepharoptosis is drooping of the upper eyelid in a primary position, causing the narrowing of the palpebral fissure. This condition can partially or completely cover the visual axis. Establishing the diagnosis of ptosis requires a comprehensive eye examination, including history taking, physical examination, and examination of the eyelids in ptosis patients. The majority of patients with ptosis require surgery, and clinical characteristics play an important role in classifying the type of ptosis and then formulating a detailed treatment plan strategy so that a better outcome is obtained.&#x0D; Methods: A descriptive retrospective study was conducted from medical records of post-surgical ptosis patients at Dr. Mohammad Hoesin Hospital Palembang from January 2016 to December 2021. The data taken included age, gender, the onset of occurrence, laterality, type of ptosis based on the onset, vertical palpebral fissure (FPV), horizontal palpebral fissure (FPH), margin-reflex distance (MRD), margin limbal distance (MLD), lid lag, bell's phenomenon levator muscle function, type of ptosis surgery and postoperative condition. This study aims to determine the clinical characteristics of patients with ptosis at Dr. Mohammad Hoesin Hospital Palembang.&#x0D; Results: Of the 57 ptosis patients in this study, the majority of patients were male, as many as 32 patients (56.1%) with the age category &gt;40 years, as many as 24 patients (42.1%) with unilateral lateral ptosis as many as 50 patients (87.7%) with the more frequent comparison was the left eye in 29 patients (58%). Acquired ptosis was the most common cause in this study in as many as 46 patients (80.7%), and the most common mechanism of acquired ptosis was neurogenic (33.3%). The majority of patients had no previous surgical history of 41 patients (71.9%), moderate levator function of as many as 42 (73.7%), and frontal suspension surgery technique with synthetic materials as many as 17 (34%) patients. the mean FPV was 5.08±2.627 with a median of 5.00 (0-11), FPH 25.94±1.726 with a median of 26.00 (20-29), MRD 0.246±1.78 with a median of 0.00 (-4 -5), MLD 4.789±2.801 with a median of 5.00 (-4-11) and LA 7.16±4.083 with a median of 7.00 (0-14). Ptosis patients had negative lid lag in 47 patients (82.5%) and positive bell's phenomenon in 49 patients (86%). The postoperative condition of ptosis patients was satisfactory where there was no recurrence and reoperation of ptosis, postoperative complications as many as 1 (1.8%) patients experienced overcorrection, 6 (10.5%) patients experienced lagophthalmos, and 2 (3.5%) patients had an outcome. asymmetric.&#x0D; Conclusion: Clinical characteristics of ptosis patients can determine the diagnosis and treatment that will be given to the patient.

Workflow and treatment results for computer-aided design and 3D-printed conformer therapy of congenital anophthalmia and microphthalmia

Background/aimsTo evaluate treatment with custom, three-dimensional (3D) printed conformers for socket expansion in congenital microphthalmia and anophthalmia (MICA).MethodsRetrospective analysis of prospective cohort from 2016 to 2020. All children received custom-made...

Facial Asymmetry in Children With Unilateral Congenital Ptosis.

To analyze facial asymmetry in children with unilateral congenital ptosis. This is a retrospective review of pediatric patients undergoing ptosis repair between January 1, 2017, and December 31, 2020. Charts were reviewed to ensure a diagnosis of idiopathic unilateral congenital ptosis. Sex, age, laterality, margin to reflex distance 1, levator function, and surgical intervention were collected.Clear preoperative photos without head turn were included. Using the ImageJ software ( nih.gov ), landmarks of the periorbital region, midface, and lower face were marked, and measurements between these landmarks were taken.Two-tailed Student t tests were used to compare measurements between the ptotic and non-ptotic sides. Relationships between different measurements on the same side of the face were analyzed using paired-variable regressions. Forty-four patients with unilateral congenital ptosis were included. The surgical management consisted of Mullerectomy in 9 of 44 (20%), levator resection in 15 of 44 (34%), and frontalis suspension in 20 of 44 (46%) patients. The side of the face with blepharoptosis was found to more often have smaller margin to reflex distance 1 ( p &lt; 0.001), smaller margin to reflex distance 2 ( p &lt; 0.005), smaller horizontal palpebral fissure ( p &lt; 0.05), shorter midface height ( p &lt; 0.001), and a more inferiorly displaced lateral canthus (canthal angle, p &lt; 0.001) relative to the non-ptotic side of the face. The mean head tilt of patients with right sided ptosis (1.37° right tilt) was statistically significantly different from those with left sided ptosis (0.85° left tilt; p = 0.04). In children with unilateral congenital ptosis, the ptotic side of the face was found to be the nondominant side of the face. Patients were also found to have ipsilateral head tilt.

The effect of lower eyelid malposition repair on palpebral fissure size changes

Objectives:The aim of the study was to evaluate the effect of changes in the horizontal and vertical palpebral fissure dimensions on surgical success performed due to entropion and ectropion of the lower eyelid.Methods:The present research was conducted as a retrospective and interventional case series who had undergone involutional lower eyelid malposition repair with a lateral tarsal strip (LTS) alone, LTS with a medial spindle, and LTS with the advancement of the lower eyelid retractors. The subjects’ medical records, including demographic and clinic characteristics, pre-operative assessment of horizontal eyelid laxity, and surgical outcomes, were reviewed. The distance between the pupillary light reflex and the lower-eyelid margin marginal reflex distance 2 (MRD-2) and the horizontal palpebral aperture (HPA) width were measured using the Image J program in the pre-operative and post-operative 6-month follow-up. The correlation between surgical success, changes in pre-operative and post-operative MRD-2, and HPA width was assessed by the Spearman rank correlation test.Results:A total of 66 eyelids of 48 patients were included in the study. This cohort comprised of 41 males (86.4%) and 7 females (13.6%), 18 of whom underwent bilateral surgery. The pre-operative mean MRD-2 was 7.13 ± 1.98 mm, and the post-operative 6-month mean MRD-2 was 6.21±1.19 mm (p<0.01). The mean post-operative HPA width was statistically significantly higher in comparison with the mean pre-operative HPA width (27.35±2.41, 26.89±2.39, p=0.02, respectively). There was no correlation between success rate and changes in horizontal and vertical palpebral fissure dimensions.Conclusion:LTS surgery is a method that turns the shortened HPA width to normal and enables the successful correction of the lower eyelid malpositions.

Ophthalmic diagnostic tests and ocular findings in healthy adult cockatiels (Nymphicus hollandicus)

Cockatiels (Nymphicus hollandicus) are a common companion psittacine for which little ophthalmic data has been gathered. The goal of this study was to establish normal ocular parameters in healthy cockatiels and evaluate whether intraocular pressure (IOP) varies by restraint method. Twenty-five cockatiels free of ophthalmic disease underwent complete ophthalmic examination including slit-lamp biomicroscopy, indirect ophthalmoscopy, and measurement of palpebral fissure diameter, tear production by absorbent paper point tear test (PPTT) and rebound tonometry. IOP measurements were obtained with birds held in two different body positions (vertical and dorsal recumbency). Cockatiel eyes are atapetal, anangiotic, and possess robust filoplumes, brown irises, pleated pecten, and circular pupil. There was no significant difference for horizontal palpebral fissure diameter, vertical palpebral fissure diameter, PPTT or IOP when comparing dorsal to vertical recumbency. For all eyes (50 eyes from 25 cockatiels), the mean (range) of horizontal palpebral fissures was 5.45 (5.0–6.0) mm, PPTT was 9.39 (6–14) mm/15s, and IOP (both recumbencies) was 13 (8.0–24.0) mm Hg. Described data can be used to improve diagnosis and management of ocular alterations in this species.

Classification for treatment urgency for the microphthalmia/anophthalmia spectrum using clinical and biometrical characteristics.

PurposeCurrent clinical classifications do not distinguish between the severity of the MICrophthalmia/Anophthalmia (MICA) spectrum with regard to treatment urgency. We aim to provide parameters for distinguishing mild, moderate and severe MICA using clinical and biometrical characteristics.MethodsWe performed a single‐centre, cross‐sectional analysis of prospective cohort of 58 MICA children from September 2013 to February 2018 seen at the Amsterdam University Medical Center, The Netherlands. All patients with a visible underdeveloped globe were included. We performed full ophthalmic evaluation including horizontal palpebral fissure length, axial length by ultrasound and/or MRI measurements, paediatric and genetic evaluation. Cases were subdivided based on clinical characteristics. Biometrical data were used to calculate the relative axial length (rAL) and the relative horizontal palpebral fissure length (rHPF) compared with the healthy contralateral eye for unilateral cases.ResultsIn previously untreated patients, a strong correlation exists between rAL and rHPF, distinguishing between severe, moderate and mild subjects using rAL of 0–45%, 45–75% and 75%–100%, respectively. Clinical subgroups were randomly dispersed throughout the scatterplot.ConclusionCurrent classifications lack clinical implications for MICA patients. We suggest measuring eyelid length and axial length to classify the severity and determine treatment strategy. The ‘severe’ group has obvious asymmetry and abnormal socket configuration for which therapy should quickly be initiated; the ‘moderately’ affected group has normal socket anatomy with a microphthalmic eye with disturbing asymmetry for which treatment should be initiated within months of development; the ‘mild’ group has a slightly smaller axial length or less obvious eyelid asymmetry for which reconstructive correction is possible, but expansive conformer treatment is unnecessary.

Impact of Canthal Height on Horizontal Upper Eyelid Peak Position: A Guide for Blepharoptosis Surgery.

This study was aimed at examining the relationship between the horizontal upper eyelid peak position (Δpeak-pupil) and the difference between the medial and lateral canthal heights (Δcanthi) in Japanese individuals. Images of the left eyelid of 71 participants without eyelid disease were acquired with a camera with a slit-lamp microscope. Multivariate linear regression analysis was performed to determine the influence of age, sex, distance from the pupil center to the upper eyelid margin (margin reflex distance-1), Δcanthi, and palpebral fissure width on Δpeak-pupil. In addition, Δpeak-pupil distribution in participants with Δcanthi <3 (Group A), 3 to 6 (Group B), and >6 mm (Group C) was calculated as the average±2x the standard deviation. The mean Δpeak-pupil was 1.12 ± 1.29 mm (range: -1.44 to 6.12) and the mean Δcanthi was 4.50 ± 1.71 mm (1.02-7.96). Δcanthi was a significant determinant factor of Δpeak-pupil (P < 0.0001), whereas age (P = 0.62), sex (P = 0.88), margin reflex distance-1 (P = 0.29), and the horizontal palpebral fissure width (P = 0.65) were not related to Δpeak-pupil. The normal Δpeak-pupil ranges were -1.47 to 1.52, -0.95 to 3.22, and -0.84 to 4.73 mm in Groups A, B, and C, respectively. There was a statistically significant difference between the Group A and B ranges and between the Group A and C ranges (Kruskal-Wallis test, P < 0.01). It was concluded that the normal eyelid peak position differs according to medial-to-lateral canthal positional difference. This finding may help intraoperative determination of the upper eyelid peak position in blepharoptosis surgery.

Eyelid Spontaneous Blink Analysis and Age-Related Changes Through High-Speed Imaging.

To analyze the spontaneous eyelid blink and sphincter closure activity of the orbicularis oculi by measuring the horizontal eyelid movement. Individuals 18+ years of age, any ethnicity, and gender were recruited. Participants completed a questionnaire to determine eligibility. Exclusion criteria included the following: history of facial trauma, nerve palsy, surgery, use of periorbital neuromodulators or filler within the past year, thyroid eye disease, and eyelid or ocular surface disease. Data were collected from participants by decade. Eyelid blinks were recorded using the FPS 1000HD. The motions of 3 spontaneous blinks in primary gaze were recorded. All blinks were reviewed and one chosen for most accurate analysis. Horizontal palpebral fissure width and its changes of open and closed eye measurements were taken using National Institute of Health ImageJ software version 2.0. The data were subjected to SAS version 9.4 analysis using paired t test, t test, and linear models. One hundred thirty-six patients were recruited. Fourteen patients were excluded; 122 patients were used in analysis. Ages ranged from 22 to 90 years. Participants were divided into 6 groups according to age (20-29, 30-39, 40-49, 50-59, 60-69, and 70+ years of age). The average horizontal fissure length across all ages was 24.23 mm. Average change in horizontal fissure length decreased 1.42 mm among all ages. There was a statistically significant difference comparing age 20-29 decade to age 70+ decade. Horizontal fissure length changes with eyelid blink and defines 1 component of the eyelid sphincter.

Reference values for selected ophthalmic diagnostic tests in two species of microchiroptera bats (Artibeus lituratus and Anoura caudifer).

To establish reference values for ophthalmic tests in two bat species. BATS: Fourteen bats including seven great fruit-eating bats (Artibeus lituratus) and seven tailed tailless bats (Anoura caudifer). Normal values for following ophthalmic tests were investigated as follows: (a) aqueous tear production using the standardized endodontic paper point tear test (EPPTT), (b) rebound tonometry, and (c) horizontal palpebral fissure length. Aqueous tear production was 2.53±1.65mm/min for Alituratus and 1.89±0.62 for Acaudifer. Intraocular pressure measured in the upright position was 11.0±3.28mmHg for Alituratus and 7.28±2.70 for Acaudifer. Horizontal palpebral fissure length was 5.04±0.45mm for Alituratus and 3.92±0.51 for Acaudifer. The data obtained in the present study may serve as a reference for ophthalmic parameters and help practitioners in the diagnosis and management of eye diseases in bats, as well for future investigations about microchiroptera bats.