Application of smartphone cameras for detecting clinically active trachoma: Table 1

Bhosai, Satasuk Joy; Amza, Abdou; Nassirou, Beido; Bailey, Robin L.; Keenan, Jeremy D.; Gaynor, Bruce D.; Lietman, Thomas M.

doi:10.1136/bjophthalmol-2012-302050

Cited by 36 publications

(30 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…40 Other research has focused on telemedicine using the standing slit-lamp photography, but this method lacks feasibility to implement in non-ophthalmic settings because of personnel and equipment requirements. 38–40,42,45,47–49,53 Some research did not include sensitivity analyses 43,46,51,53,54 and some research describes implementation of technologies rather than validation. 43,46,48,52,53 Portable anterior segment photography with mobile phone camera devices has been evaluated.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Teleophthalmic Approach for Detection of Corneal Diseases: Accuracy and Reliability

Woodward

Musch

Hood

et al. 2017

Cornea

View full text Add to dashboard Cite

Purpose Corneal and anterior segment diseases cause the majority of urgent visits to eye-care professionals. We evaluated the diagnostic accuracy of detecting corneal diseases using external photographs from two portable cameras for telemedicine purposes. Methods A prospective study of adults with a clinical diagnosis of corneal pathology including corneal abrasions, ulcers, scars, and pterygia. A corneal specialist provided the gold-standard diagnosis by slit-lamp examination. Images of both eyes were obtained using iTouch 5S and Nidek VersaCam cameras in multiple gazes and interpreted by 3 cornea specialists for presence of pathology. Accuracy to detect disease was compared to gold standard diagnosis, stratified by camera and grader. Reliability was evaluated with weighted kappa statistics. Graders assessed image quality on a Likert scale from 1 (poor) to 9 (optimal). Results 198 eyes (110 subjects) were photographed. By gold standard diagnosis, 59 eyes (30%) had corneal scars, 34 (17%) had ulcers, 13 (7%) had abrasions, 10 (5%) had pterygia, and 82 (41%) were normal. Sensitivity to detect AS pathology ranged from 54–71% for iTouch and 66–75% for Nidek, across graders; specificity ranged from 82–96% for iTouch and 91–98% for Nidek. Inter-grader reliability was moderate to strong (kappa ranges: 0.54–0.71 for iTouch; 0.75–0.76 for Nidek. Quality ratings were variable between graders. Conclusions External photographs taken by standard, non-enhanced portable cameras and interpreted remotely by ophthalmologist graders yielded sensitivity values that are not yet suitable for telemedicine applications. Additional work is needed to improve the ability to detect AS pathology remotely.

show abstract

Section: Discussionmentioning

confidence: 99%

“…45 Bhosai and colleagues found moderate reliability, but not always high accuracy, when using iPhone technology when compared to SLR photos for detecting clinically active trachoma. 42 The results of the published work indicate that a hardware and software solution is still needed to photographically capture anterior segment pathology.…”

Section: Discussionmentioning

confidence: 99%

Teleophthalmic Approach for Detection of Corneal Diseases: Accuracy and Reliability

Woodward

Musch

Hood

et al. 2017

Cornea

View full text Add to dashboard Cite

show abstract

“…4,6,13,[20][21][22] Photo grading has advantages over field grading. (1) Exam conditions can be standardized.…”

Section: Discussionmentioning

confidence: 99%

Importance of Including Borderline Cases in Trachoma Grader Certification

Gaynor

Amza

Gebresailassie

et al. 2014

The American Society of Tropical Medicine and Hygiene

Self Cite

View full text Add to dashboard Cite

Abstract. We assessed trachoma grading agreement among field graders using photographs that included the complete spectrum of disease and compared it with cases where there was consensus among experienced graders. Trained photographers took photographs of children's conjunctiva during a clinical trial in Ethiopia. We calculated κ-agreement statistics using a complete set of 60 cases and then recalculated the κ using a consensus set where cases were limited to those cases with agreement among experienced graders. When the complete set of 60 cases was used, agreement was moderate (κ = 0.61, 95% confidence interval [95% CI] = 0.56-0.67). When the consensus set was used, agreement improved significantly (κ = 0.75, 95% CI = 0.68-0.80). The κ of the consensus set was higher than the complete set by 0.14 (95% CI = 0.12-0.16) (P 0.001). If testing sets remove difficult-to-grade cases, agreement in trachoma grading may be higher than actually seen in population-based trachoma surveys.

show abstract

“…Health-related smart phone apps are being actively studied for potential applications in a wide variety of fields of medical importance including but not limited to dermatology,8 ophthalmology9,10 and cancer 11. Many studies have questioned the validity and specificity of the health care information available on these subjects 12,13.…”

Section: Introductionmentioning

confidence: 99%

Smart Phone Applications as a Source of Information on Stroke

et al. 2014

View full text Add to dashboard Cite

Background and PurposeSmartphone applications have been increasingly identified as a novel platform for dissemination of healthcare related information. However, there have been no studies done to evaluate the availability and content of stroke related apps. Purpose: This study aims to identify and analyze stroke-related applications available on the Apple iTunes and Android Google Play Store.MethodsThe Apple iTunes store and Android Google Play Store were searched for stroke-related applications on July 27, 2013 using keywords: stroke, brain attack, intracranial hemorrhage, subarachnoid hemorrhage, cerebral infarction. The content of the applications was analyzed by two independent investigators.ResultsA total of 93 relevant applications (46.2% android and 53.8% iPhone) were identified of which 47.3% were available free of cost. 92% of apps were identified as useful by users and over 60% had scientifically valid information. There is a significant participation of healthcare agencies in dissemination of stroke related information through apps with 47.3% apps being uploaded by them. Over half of all stroke related apps were aimed towards health care workers (51.6%), 75% of which could be utilized as bedside tools for patient care and remainder had information related to recent research advances. The difference in scientific validity between the apps aimed at general population versus healthcare professionals was statistically significant (P<0.01). There was no statistical association between cost of app and scientific validity or usefulness.ConclusionsSmartphone apps are a significant source of information related to stroke. An increasing participation of healthcare agencies should be encouraged to promote dissemination of scientifically valid information.

show abstract

Application of smartphone cameras for detecting clinically active trachoma: Table 1

Cited by 36 publications

References 4 publications

Teleophthalmic Approach for Detection of Corneal Diseases: Accuracy and Reliability

Teleophthalmic Approach for Detection of Corneal Diseases: Accuracy and Reliability

Importance of Including Borderline Cases in Trachoma Grader Certification

Smart Phone Applications as a Source of Information on Stroke

Contact Info

Product

Resources

About