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  1. AU="Liao, Walter"
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  1. Artikel ; Online: Evaluation of an online peer fundus photograph matching program in teaching direct ophthalmoscopy to medical students.

    Kwok, Jason / Liao, Walter / Baxter, Stephanie

    Canadian journal of ophthalmology. Journal canadien d'ophtalmologie

    2017  Band 52, Heft 5, Seite(n) 441–446

    Abstract: Objective: Direct ophthalmoscopy is an important clinical skill that is often poorly performed by medical professionals and students. This is attributable to a declining emphasis on ophthalmology in medical school. We present and evaluate a self- ... ...

    Abstract Objective: Direct ophthalmoscopy is an important clinical skill that is often poorly performed by medical professionals and students. This is attributable to a declining emphasis on ophthalmology in medical school. We present and evaluate a self-directed approach of teaching ophthalmoscopy to medical students that is suitable for the current medical curriculum.
    Design: Prospective medical education trial.
    Participants: Ninety-five second-year medical students at Queen's University: 32 in the experimental group and 63 in the control group.
    Methods: The experimental group consisted of medical students who practised ophthalmoscopy with one another using an online peer fundus photograph matching exercise created by the Department of Ophthalmology at Queen's University. To use the program, students first examined a peer with an ophthalmoscope and then selected an online photograph of a fundus corresponding to that of the examinee. The program notifies students if a correct selection is made. To encourage use of the program, students participated in a 2-week ophthalmoscopy competition during their ophthalmology rotation. The control group consisted of students who did not participate in the learning exercise.
    Results: On assessment at the end of the ophthalmology rotation, the experimental group (n = 32) was more accurate in matching fundus photographs compared with the control group (n = 63) (p = 0.02). Participants were faster at performing ophthalmoscopy at the end of the learning exercise (p < 0.01). All students in the experimental group reported increased confidence levels in ophthalmoscopy after participation in the learning exercise.
    Conclusions: Matching online peer fundus photographs in a self-directed manner appeared to increase the skill and confidence of medical students in ophthalmoscopy.
    Sprache Englisch
    Erscheinungsdatum 2017-10
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 80091-0
    ISSN 1715-3360 ; 0008-4182
    ISSN (online) 1715-3360
    ISSN 0008-4182
    DOI 10.1016/j.jcjo.2017.02.020
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 588: Hefte anzeigen Standort:
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Artikel ; Online: Use of a fundus photograph matching program in imparting proficiency in ophthalmoscopy.

    Bénard-Séguin, Étienne / Kwok, Jason / Liao, Walter / Baxter, Stephanie

    Canadian journal of ophthalmology. Journal canadien d'ophtalmologie

    2018  Band 53, Heft 5, Seite(n) 480–485

    Abstract: Objective: To determine whether practice using an online fundus photograph program results in a long-term increase in proficiency with direct ophthalmoscopy skills in medical students.: Design: This study was a prospective medical education trial. ... ...

    Abstract Objective: To determine whether practice using an online fundus photograph program results in a long-term increase in proficiency with direct ophthalmoscopy skills in medical students.
    Design: This study was a prospective medical education trial. Students were enrolled to participate in a voluntary Objective Structured Clinical Examination (OSCE) using 5 patients with ocular findings. Students who matched a minimum of 6 discs 16 months before the study were assigned to the intervention group and were compared with students who did not participate in the exercise.
    Participants: Forty-six second-year medical students at Queen's University: 15 in the intervention group and 31 in the control group.
    Methods: Students were evaluated using the Queen's University Ophthalmoscopy OSCE Checklist (QUOOC). Students were asked to calculate the cup-to-disc ratio, comment on disc margins, and whether there was any macular pathology. Students participated in a summative OSCE as part of the curriculum in which all students attempted to match fundus photographs.
    Results: Students in the intervention group performed significantly better on the QUOOC, with a mean score of 78.3% (± 4.2), compared with the control, who had a mean score of 69.4% (± 4.2) (p = 0.005). The intervention group was significantly more accurate at matching optic nerve photographs, with 100% (15/15) of the students correctly identifying the correct optic nerve on first attempt compared with 53.3% (16/30) in the control group (p = 0.0014).
    Conclusions: The use of an online peer fundus photograph program leads to a long-term increase in examination technique, proficiency in ophthalmoscopy, and accuracy at matching optic nerve photographs.
    Mesh-Begriff(e) Clinical Competence ; Curriculum ; Education, Medical, Undergraduate/methods ; Educational Measurement ; Eye Diseases/diagnosis ; Fundus Oculi ; Humans ; Ophthalmology/education ; Ophthalmoscopy/standards ; Optic Nerve/diagnostic imaging ; Prospective Studies ; Students, Medical
    Sprache Englisch
    Erscheinungsdatum 2018-02-09
    Erscheinungsland England
    Dokumenttyp Journal Article ; Randomized Controlled Trial
    ZDB-ID 80091-0
    ISSN 1715-3360 ; 0008-4182
    ISSN (online) 1715-3360
    ISSN 0008-4182
    DOI 10.1016/j.jcjo.2017.11.022
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 588: Hefte anzeigen Standort:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  3. Artikel: Treatment of lower eyelid retraction by retractor release and posterior lamellar grafting: an analysis of 659 eyelids in 400 patients.

    Oestreicher, James H / Pang, Noelene K / Liao, Walter

    Ophthalmic plastic and reconstructive surgery

    2008  Band 24, Heft 3, Seite(n) 207–212

    Abstract: Purpose: To review one surgeon's experience with posterior lamellar grafting for lower eyelid elevation over a 15-year period, comparing the success of different posterior lamellar grafts used in 4 etiology groups.: Methods: A retrospective chart ... ...

    Abstract Purpose: To review one surgeon's experience with posterior lamellar grafting for lower eyelid elevation over a 15-year period, comparing the success of different posterior lamellar grafts used in 4 etiology groups.
    Methods: A retrospective chart review of 400 patients (659 eyelids) was conducted. Patients were grouped into thyroid ophthalmopathy, previous surgery, trauma, and idiopathic causes. Three graft types were used: hard palate mucosa, free tarsoconjunctival, and free scleral. Objective measurements of lagophthalmos, scleral show, and superficial punctate keratopathy, and subjective patient symptoms, preoperatively and postoperatively were compared between graft types and etiologic groups. Complications were tabulated and compared between groups, as was any need for further surgery. The mean follow-up interval was 16.5 months. The main outcome measures were objective measurements of lagophthalmos, scleral show, and superficial punctate keratopathy.
    Results: A mean reduction in lagophthalmos ( approximately 0.5 mm), superficial punctate keratopathy (mean score reduction = 0.2, on a scale of 1-3), and scleral show ( approximately 1.3 mm) was demonstrated for all etiology groups and graft types. Furthermore, 90% of patients subjectively reported a reduction of 1 to 3 symptoms. Hard palate mucosa grafts were more likely to be used than tarsoconjunctival grafts in cases with one or more previous surgeries (p < 0.001). Complications were more common with tarsoconjunctival grafts (except for bleeding), but the difference was statistically significant only for wound dehiscence (p = 0.004).
    Conclusions: Lower eyelid retraction repair with posterior lamellar grafting and lateral eyelid tightening can be recommended with confidence for eyelid retraction patients because most improved subjectively and by objective examination.
    Mesh-Begriff(e) Adult ; Conjunctiva/transplantation ; Eye Injuries/complications ; Eyelid Diseases/etiology ; Eyelid Diseases/surgery ; Female ; Graves Ophthalmopathy/complications ; Humans ; Iatrogenic Disease ; Intraoperative Complications ; Male ; Oculomotor Muscles/surgery ; Ophthalmologic Surgical Procedures ; Palate, Hard/transplantation ; Postoperative Complications ; Retrospective Studies ; Sclera/transplantation
    Sprache Englisch
    Erscheinungsdatum 2008-05
    Erscheinungsland United States
    Dokumenttyp Comparative Study ; Journal Article
    ZDB-ID 632830-1
    ISSN 1537-2677 ; 0740-9303
    ISSN (online) 1537-2677
    ISSN 0740-9303
    DOI 10.1097/IOP.0b013e3181706840
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Herpes zoster ophthalmicus and sixth nerve palsy in a pediatric patient.

    Liao, Walter / Chu, Gabriel / Hutnik, Cindy M L

    Canadian journal of ophthalmology. Journal canadien d'ophtalmologie

    2007  Band 42, Heft 1, Seite(n) 152–153

    Mesh-Begriff(e) Abducens Nerve Diseases/diagnosis ; Abducens Nerve Diseases/drug therapy ; Abducens Nerve Diseases/etiology ; Acyclovir/administration & dosage ; Administration, Oral ; Antiviral Agents/administration & dosage ; Child ; Diplopia/diagnosis ; Diplopia/drug therapy ; Diplopia/etiology ; Herpes Zoster Ophthalmicus/complications ; Herpes Zoster Ophthalmicus/diagnosis ; Herpes Zoster Ophthalmicus/drug therapy ; Humans ; Male
    Chemische Substanzen Antiviral Agents ; Acyclovir (X4HES1O11F)
    Sprache Englisch
    Erscheinungsdatum 2007-02
    Erscheinungsland England
    Dokumenttyp Case Reports ; Letter
    ZDB-ID 80091-0
    ISSN 1715-3360 ; 0008-4182
    ISSN (online) 1715-3360
    ISSN 0008-4182
    DOI 10.3129/can j ophthalmol.06-117
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Lupus miliaris disseminatus faciei of the eyelids: report of two cases.

    Liao, Walter / Jolly, Shivinder S / Brownstein, Seymour / Jordan, David R / Gilberg, Steven / Prokopetz, Robert

    Ophthalmic plastic and reconstructive surgery

    2010  Band 26, Heft 1, Seite(n) 59–61

    Abstract: Lupus miliaris disseminatus faciei is a rare chronic, asymptomatic papular eruption, most commonly affecting the central face, including the eyelids. Our 2 patients presented with the typical clinical findings of small papular lesions in which ... ...

    Abstract Lupus miliaris disseminatus faciei is a rare chronic, asymptomatic papular eruption, most commonly affecting the central face, including the eyelids. Our 2 patients presented with the typical clinical findings of small papular lesions in which histopathologic examinations disclosed granulomatous inflammation with necrosis associated with inflamed hair follicles. Except for its description as acne agminata by Duke-Elder in 1974, to the authors' knowledge, this condition has not been reported previously in the ophthalmic literature.
    Mesh-Begriff(e) Aged ; Anti-Bacterial Agents/therapeutic use ; Eyelid Diseases/drug therapy ; Eyelid Diseases/pathology ; Facial Dermatoses/drug therapy ; Facial Dermatoses/pathology ; Female ; Humans ; Lupus Erythematosus, Systemic/pathology ; Middle Aged ; Minocycline/therapeutic use
    Chemische Substanzen Anti-Bacterial Agents ; Minocycline (FYY3R43WGO)
    Sprache Englisch
    Erscheinungsdatum 2010-01
    Erscheinungsland United States
    Dokumenttyp Case Reports ; Journal Article
    ZDB-ID 632830-1
    ISSN 1537-2677 ; 0740-9303
    ISSN (online) 1537-2677
    ISSN 0740-9303
    DOI 10.1097/IOP.0b013e3181b8c6fd
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 2159: Hefte anzeigen Standort:
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  6. Artikel ; Online: Myxomatous corneal degeneration: a clinicopathological study of six cases and a review of the literature.

    Belliveau, Michel J / Liao, Walter N / Brownstein, Seymour / Manusow, Joshua S / Jordan, David R / Gilberg, Steven / Mintsioulis, George

    Survey of ophthalmology

    2012  Band 57, Heft 3, Seite(n) 264–271

    Abstract: Thirteen cases with myxomatous changes of the corneal stroma have been reported to date. We report six additional cases with clinical, histopathological, and immunohistochemical data. The clinical appearance is most often a gelatinous, whitish elevation ... ...

    Abstract Thirteen cases with myxomatous changes of the corneal stroma have been reported to date. We report six additional cases with clinical, histopathological, and immunohistochemical data. The clinical appearance is most often a gelatinous, whitish elevation with insidious onset. Histopathologically, there are inconspicuous spindle- and stellate-shaped cells in a loose, myxoid matrix. The typical location is in the anterior cornea beneath the epithelium, with varying degrees of extension into the stroma. Vimentin and smooth-muscle actin immunohistochemical stains are characteristically positive, and staining occasionally may be seen with muscle-specific actin, whereas CD34 staining usually is negative. In most cases, myxomatous changes are a degenerative process involving transformation of stromal keratocytes into cells with prominent secretory activity and myofibroblastic differentiation. Most occur in corneas with a history of ocular disease or trauma that disrupts Bowman's layer. We suggest labelling lesions with these features as "myxomatous corneal degeneration." So-called "primary corneal myxomas" also exist where there is no significant history. It remains unclear whether the myxomatous changes in such lesions are neoplastic or degenerative. Myxomatous corneal changes are likely under-recognized and under-diagnosed.
    Mesh-Begriff(e) Aged ; Aged, 80 and over ; Corneal Diseases/pathology ; Eye Neoplasms/pathology ; Female ; Humans ; Male ; Middle Aged ; Myxoma/pathology
    Sprache Englisch
    Erscheinungsdatum 2012-05
    Erscheinungsland United States
    Dokumenttyp Case Reports ; Journal Article ; Review
    ZDB-ID 391346-6
    ISSN 1879-3304 ; 0039-6257
    ISSN (online) 1879-3304
    ISSN 0039-6257
    DOI 10.1016/j.survophthal.2011.09.006
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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