Mark D Bona's research while affiliated with Queen's University and other places

Publications (10)

Article
Objective To characterize changes in body positioning while performing a standardized slit lamp examination after exposure to an educational module on ergonomics. Design Prospective interventional pilot study. Participants Ten ophthalmology residents. Methods An educational module discussing ergonomic issues in ophthalmology was created. In a st...
Article
To compare retention rates of Super Flex versus Parasol punctal plugs. Randomized, double-masked, interventional controlled clinical trial. Institutional study at Hotel Dieu Hospital (Queen's University) of 50 eyes, from patients with moderate to severe dry eye. Each eye from eligible patients was separately randomized to receive Super Flex or Para...
Article
The use of cyanoacrylate tissue adhesives in strabismus surgery has been variously successful, depending primarily on achieving adequate bond strength and minimizing extraocular muscle slippage. We investigate a novel approach to this problem, involving cyanoacrylate tissue adhesive on a polyglactin 910 scaffold as a means to secure extraocular mus...
Article
Cardiovascular risk factors predispose individuals to retinal vein occlusions (RVOs). Yet, the future risk for development of cardiovascular disease in persons with RVOs is uncertain. We performed a literature review and meta-analysis of studies to determine the 10-year Framingham risk for individuals with RVO. A literature search was performed in...
Article
The purpose of this study is to determine whether patients with acute posterior vitreous detachment (PVD) who develop delayed retinal tears within the first 6 weeks after initial presentation have predictive characteristics. Prospective cohort study. All patients presenting to the Hotel Dieu Hospital Emergency Eye Clinic between September 2008 and...
Article
To determine whether the visual function of patients with posterior vitreous detachment (PVD)changes between the initial visit and a 6-week follow-up visit, and to compare their visual function with that of patients with macular degeneration, cataract, glaucoma, low vision, cytomegalovirus (CMV) retinitis, or diabetic retinopathy and a reference po...
Article
Full-text available
The purpose of the study is to determine the validity of an original patient symptom diary in recording symptoms of posterior vitreous detachment (PVD). In this prospective cohort study, all patients presenting to the Hotel Dieu hospital emergency eye clinic between September 2008 and July 2009 diagnosed with acute PVD were offered enrollment in th...
Article
The objective was to assess the predictive value of clinical signs and symptoms of herpes zoster ophthalmicus (HZO) for development of moderate to severe eye disease. This was a prospective cohort multicenter study of 54 patients referred to the ophthalmology service after presenting to the emergency department (ED) or primary care clinic with a zo...

Citations

... These recommendations include positioning of the examiner closer to the patient as well as the slit lamp device to prevent forward flexion of the thoracic spine, and neck flexion to see through the ocular objectives; positioning the slit lamp at the proper height to avoid a slouched thoracic position and inferior translation of the head. 15 To our knowledge, there are no published studies on redesigning these tools to promote neutral spine postures and beginning to reinvent our tools. ...
... Providing LVR services is beyond the scope of most ECPs, as their primary focus often is geared towards treating the underlying cause of low vision. However, it is highly recommended by the American Academy of Ophthalmology (AAO) that the treating ECP take the initiative to simultaneously refer a low-vision patient to LVR services for timely help, especially if the nature of the disease is progressive [15]. Often, ophthalmologists refer their low-vision patients in two scenarios: (1) they have depleted all other avenues of services or (2) the patient is only able to either count fingers or see hand motions [16]. ...
... And long-term using of eye drops aggravates the ocular surface injury. And surgical treatment [8] of DED included lacrimal embolus implantation, lacrimal blocking, corneal conjunctiva transplantation, [9] and submandibular gland transplantation. [10] Patients are reluctant to receive such treatment. ...
... In this case, even the first case (biomimetic coating/biomimetic deposition) becomes compatible with the electrochemical method (with which it was only compared earlier [66]), implying the electrochemical activation of biosimilar coatings of calcium phosphate implants [67]. Adhesives, as a kind of tissue coatings that form contacts between them or between them and the tissue scaffold, can also be considered and can function as active implants [68]; many of them (being components for the manufacture of scaffolds, or, inevitably, coming into direct contact with them [69][70][71][72][73][74]) are well suited to both item 1 ("biofunctionalization of polymers and composites …") and item 2 ("development of the active implants and implantable scaffolds …"). Therefore, the problem of any homogeneous active implants, strictly speaking, can be reduced to the problem of active interfaces on which the implant interacts with the tissue and surrounding medium. ...
... Patients with RVO have a higher longterm risk of cardiovascular events. In several studies, cardiovascular risk was higher than in the general population with a roughly two-fold increased risk of developing stroke, myocardial infarction, and cardiovascular death 9,[11][12][13][14][15] . The results of a meta-analysis of six studies (total 549 patients) reported that the Framingham score of RVO patients (10.1%; 95% CI: 9.9-10.2) is significantly higher than that of 8.4 million people aged 40-74 years from the general Canadian population (difference in percentage risk = 4.1; 95% CI: 4.0-4.2; ...
... Some cases of floaters are associated with specific mechanical events such as retinal breaks and posterior vitreous detachment. [5] In spite of most cases of floaters are considered benign, our patient diagnosed metastasis for serious lesion. ...
... Seven ophthalmic but nonedisease-specific PRO instruments were used that included the NEI-VFQ, 145,162,194,198,233 PalmPilot-VFQ, 233 VF-14, 114 Vision Core Measure 1, 88 Visual Function Questionnaire (VFQ), 194 Vitrectomy Satisfaction Questionnaire, 197 and Patient Satisfaction Questionnaire. 49 The VFQ covers a single domain, health concerns. ...
... Sıklıkla dendrit şeklinde tek taraflı tutulum söz konusudur (Şekil-4B). Ancak immun suprese kişilerde bir gözde birden fazla odak ya da her iki gözde eş zamanlı tutuluma rastlanabilir (18). Perioküler bölgede VZV tutulumu olan olgularda oküler yüzey tutulumu ve keratit gelişim riski açısından yakın izlem ve seçili olgularda profilaktik topikal antiviral tedavi verilmesi uygun olabilir. ...