ORCID Profile
0000-0003-4422-9037
Current Organisation
University of New South Wales
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Publisher: Wiley
Date: 21-04-2023
DOI: 10.1111/OPO.13149
Abstract: While optometrists' attitudes toward established retinal imaging types are generally positive, they are unknown for optical coherence tomography angiography (OCTA). We performed a cross‐sectional survey to estimate attitudes toward OCTA and identify clinician and/or practice characteristics that influence them. A paper‐based survey was mailed to 252 randomly selected optometrists in Australia. Five‐point Likert‐scale items from a previous survey assessing attitudes toward new technology were included to probe respondent characteristics and attitudes toward retinal imaging. Performance expectancy attitudes toward OCTA were elicited by the statement ‘I believe OCTA is useful in daily practice’. Mean scores out of five (mean [SD]) were rounded and mapped to appropriate descriptive statements. The response rate was 47% (118/252). The mean (SD) age of respondents was 44.0 (13.8) years and 50.8% (60/118) were female. Optometrists had 19.9 (14.0) years of clinical experience and 66.9% (79/118) worked at independent practices. In total, 8.5% (10/118) of respondents used OCTA to provide clinical care. Optometrists agreed that optical coherence tomography (OCT), colour fundus imaging, ultra‐wide field imaging and fundus autofluorescence (mean scores 3.6–4.7 out of 5) were useful in daily practice but felt neutral about whether OCTA was useful (3.4 [0.8]). Optometrists believed that OCTA was less enjoyable to use ( p 0.0001), less endorsed by peers ( p 0.0001) and felt less confident that they had the knowledge to interpret OCTA ( p 0.0001) compared to other retinal imaging types. Optometrists are undecided on whether OCTA is useful in daily practice and had lower expectations that using OCTA would confer job performance benefits compared to other retinal imaging types. Further work is needed to advocate the benefits of using OCTA across the profession.
Publisher: Informa UK Limited
Date: 03-2017
DOI: 10.1111/CXO.12453
Abstract: This paper investigates viewing distances and eyestrain symptoms in young adults reading from a smartphone for 60 minutes. A survey related to common asthenopic (eyestrain) symptoms was administered to subjects before and after they read an extract from a novel on a smartphone for 60 minutes. Subjects rated their symptoms on a scale from zero (not at all) to four (extremely). The viewing distance to the smartphone was measured on a photograph taken of the subject every minute. Each subject used the same smartphone and read the same text. Subjects were 18 young adults (mean age: 21.5 ± 3.3 years) with self-reported good health, normal visual acuity and no accommodative or binocular vision disorders. The mean viewing distance while using a smartphone over 60 minutes was 29.2 ± 7.3 cm. The viewing distance was significantly greater during the first, second and fifth 10-minute time periods (30.6 ± 7.2 cm, 29.7 ± 7.3 cm and 28.9 ± 8.5 cm, respectively) than during the final 10-minute time period (27.8 ± 7.7 cm) (Wilcoxon, p = 0.023, 0.02 and 0.04, respectively). The total symptom score was significantly greater post-experiment (score = 8.06) than pre-experiment (score = 3.56) (Wilcoxon, p < 0.001). Symptoms of tired eyes, uncomfortable eyes and blur increased significantly after 60 minutes of smartphone use (Wilcoxon, p < 0.05). There was a significant correlation between change in total symptom score and change in viewing distance (ρ = -0.51 p = 0.03). The only single symptom that correlated with a change in viewing distance was 'uncomfortable eyes' (ρ = -0.52, p = 0.03). Viewing distances are closer and eyestrain symptoms are greater after reading from a smartphone for 60 minutes. The viewing distances measured were closer than those previously reported in the literature.
Publisher: Informa UK Limited
Date: 07-03-2022
DOI: 10.1080/08820538.2022.2039222
Abstract: Certain peripheral retinal degenerations pose a significant risk to vision and require prompt detection and management. Other historically "benign" peripheral lesions are being recognised as clinically significant due to their associations with ocular and systemic disorders. Assessment and documentation of these entities however can be difficult due to challenges in visualisation of the peripheral retina. This review addresses this by providing a series of clinical ex les of these entities visualised with a variety of ocular imaging technologies. A literature search was performed in Embase, Medline, and Google Scholar. We identified and analysed all papers referring to peripheral retinal degenerations and the peripheral retina, as well as reference lists of retrieved articles until August 2019. Using ocular imaging technologies including ultra-widefield imaging and peripheral optical coherence tomography, we comprehensively describe current evidence and knowledge of a number of peripheral retinal degenerations and anomalies including microcystoid, pavingstone, lattice, snail track, snowflake and reticular pigmentary degenerations, peripheral drusen, white without pressure, retinal holes and vitreoretinal tufts. A summary of these entities is also provided as a short and easily interpretable chairside guide to facilitate the translation of this evidence base into clinical practice. While ocular technologies are useful in visualising peripheral retinal degenerations, the current evidence is fragmented throughout the literature and there is a paucity of information on imaging of "benign" peripheral lesions. This review facilitates a multimodal imaging approach to evaluating peripheral lesions.
No related grants have been discovered for Rene Cheung.