The Experts below are selected from a list of 654 Experts worldwide ranked by ideXlab platform

Tjia Suriyanti. - One of the best experts on this subject based on the ideXlab platform.

  • Hand-held Ophthalmic Camera for early detection and mass screening of eye diseases
    2013
    Co-Authors: Tjia Suriyanti.
    Abstract:

    Screening for eye disease has become increasingly important as the population ages in Singapore and around the world. With the current technology, early diagnosis can only be made via detailed examination of the eye’s fundus, which is performed by health professionals using Ophthalmic diagnostic tool. However, such devices are usually bulky, non-portable, costly, and require considerable technical expertise to operate. Ophthalmologists perform tests to detect diseases such as glaucoma, diabetic retinopathy and other forms of diseases that lead to blindness. With this consideration, early discovery of eye diseases plays a vital role to prevent the loss of eyesight. In collaboration with Tan Tock Seng hospital, the research team has developed and patented a portable hand-held Ophthalmic imaging system that utilizes an off-the-shelf high-resolution digital Camera which is easy to use and at a fractional cost, as opposed to the conventional Camera system. The image acquisition system was developed using the original system from an off-the-shelf Camera but tailored to specific requirements, incorporating lenses and light source for retina imaging. The invention serves as an add-on device connected to any digital Camera. It comprises of various kinds of specially designed lenses for imaging, Infrared (IR) and highpowered white light LEDs as illumination source for Camera attachment. With this invention, quality retinal images could be acquired with just a click of a button. The objective of this project is to promote early diagnosis of eye disease, thus preventing blindness resulted from other health diseases. The final product is significantly more costeffective than the conventional Ophthalmic diagnostic tool. It is portable, light-weight and does not require professional experts to operate and/or maintain it. These features are ideal for a mass-screening tool. Additionally, it would be beneficial to people from around the world, especially those located in the developing countries where their hospitals and clinics could only afford selective and more practical medical devices.Bachelor of Engineerin

Suman S Thapa - One of the best experts on this subject based on the ideXlab platform.

  • utility and feasibility of teleophthalmology using a smartphone based Ophthalmic Camera in screening camps in nepal
    Asia-Pacific journal of ophthalmology, 2020
    Co-Authors: Sean Collon, David Chang, Geoffrey Tabin, Karen Hong, David Myung, Suman S Thapa
    Abstract:

    Purpose To determine whether use of a mobile device-based Ophthalmic Camera by Ophthalmic technicians (OTs) in village screening camps in Nepal followed by remote image interpretation by an ophthalmologist can improve detection of ocular pathology and medical decision-making. Design Evaluation of mobile device-based Ophthalmic Camera through study of before and after clinical decision-making. Methods One hundred forty patients over 18 years of age presenting to remote screening camps with best-corrected visual acuity ≤20/60 in one or both eyes were enrolled. Participants were examined by an OT with direct ophthalmoscopy. The technician recorded a diagnosis for each eye and a disposition for each patient. Patients then had anterior segment and fundus photos and/or videos taken using a smartphone-based Ophthalmic Camera system. Photos and videos were uploaded to a secure, HIPAA-compliant, cloud-based server, and interpreted by masked ophthalmologists from XXX, who independently recorded diagnoses and a disposition for each patient. Results The diagnoses given by OTs and ophthalmologists differed in 42.4% of eyes. Diagnosis agreement was highest for cataract [k = 0.732, 95% confidence interval (CI) 0.65-0.81], but much lower for posterior segment (retina/optic nerve) pathology (k = 0.057, 95% CI -0.03-0.14). Ophthalmologists and OTs suggested different dispositions for 68.6% of patients. Agreement was highest for cataract extraction (k = 0.623, 95% CI 0.49-0.75), whereas agreement for referral to XXX was lower (k = 0.12, 95% CI 0.00-0.24). Conclusions Remote ophthalmologist consultation utilizing a mobile device Ophthalmic Camera system is logistically feasible, easily scalable, and capable of capturing high-quality images in the setting of rural eye screening camps. Although OTs are well equipped to identify and triage anterior segment pathology, this technology may be helpful in the detection of and referral for posterior segment pathology.

  • clinical application of a smartphone based Ophthalmic Camera adapter in under resourced settings in nepal
    Journal of Mobile Technology in Medicine, 2017
    Co-Authors: Carmel L Mercado, David Chang, Suman S Thapa, John D Welling, Matthew Oliva, Reeta Gurung, Sanduk Ruit, Geoff Tabin, David Myung
    Abstract:

    Background The ability to obtain high quality ocular images utilizing smartphone technology is of special interest in under-resourced parts of the world where traditional ocular imaging devices are cost-prohibitive, difficult to transport, and require a trained technician for operation. Purpose The purpose of this study was to explore potential anterior and posterior segment ocular imaging use cases for a smartphone-based Ophthalmic Camera adapter (Paxos Scope, Digisight Technologies, San Francisco, CA, USA) in under-resourced settings in Nepal. Methods From September to November of 2015 we utilized the Paxos Scope smartphone Camera adapter coupled with an iPhone 5 to explore anterior and posterior segment clinical applications for this mobile technology. We used the device at a tertiary eye care facility, a rural eye hospital and a rural cataract outreach camp. We tested the device's capability for high quality photo-documentation in clinic, in the operating room, and in the outreach camp setting. Images were automatically uploaded to a secure, cloud-based electronic medical record system that facilitated sharing of images with other providers for telemedicine purposes. Results Herein we present 17 ocular images documenting a wide variety of anterior and posterior segment pathology using the Paxos Scope from clinical cases seen in a variety of settings in Nepal. Conclusions We found the quality of both the anterior and posterior segment images to be excellent in the clinic, the operating room, and the outreach camp settings. We found the device to be versatile and user-friendly, with a short learning curve. The Paxos Scope smartphone Camera adapter may provide an affordable, high-quality, mobile ocular imaging option for under-resourced parts of the world.

Abdul Rashid Abdul Wahid - One of the best experts on this subject based on the ideXlab platform.

  • Hand-held Ophthalmic Camera for early detection and mass screening of eye diseases
    2013
    Co-Authors: Abdul Rashid Abdul Wahid
    Abstract:

    In the investigation of the human optical system, diagnosis of eye diseases can be concluded through several tests such as using direct or indirect techniques of ophthalmology performed by health professionals to scrutinize the inside of the fundus of the eye. The ophthalmologists perform these tests to detect diseases such as glaucoma, diabetic retinopathy and other form of diseases which would lead to blindness. With this consideration, early discovery of eye diseases plays a vital role to prevent the loss of eye sight. Globally, people living in the third world country, especially those who live in the rural areas have limited access to this equipment due to the expense and bulkiness of the items. People diagnosed with eye disorders at early stages stand better chances to be successfully treated. Otherwise, treatment after late diagnosis may not allow full recovery from the condition. The main objective is to develop a portable Ophthalmic adapter system to fit any digital Camera having capability of capturing retina images of patients to substitute existing clinic-based Ophthalmic Camera system. This new advancement can significantly improve the accessibility for residents to the high quality imaging for early diagnosis. Thus it reduces the dependency of the ophthalmologist since nurses can also accomplish the task in order to speed up the patient flow for screening check-up. With this technology improvement, eye screening will be accessible to the masses with ease. The three main areas of focus and concern for this development is the quality of the captured image, portability and cost efficiency. To perform this investigation, the student utilize various types of lenses and illuminating methods on an eye model. To associate with first initial prototype, the student accomplished a better quality of the captured retinal image. The images yield similar image quality as those in the clinic-based bulky Camera equipment without dilating the pupil. Intuitively, the size of device design has been reduce to half from its initial prototype and able to maintain its cost effectiveness. Additionally, it is user friendly device at a reasonable cost. Relatively from the impression of the project, the ophthalmologist in Tan Tock Seng Hospital (TTSH) requests the student to do an additional project to replace the current Relative Afferent Pupil Defects (RAPD) test equipment with a new improve RAPD device to examine the patient’s pupil. Analysis has been done and the student has designed a torch prototype for the ophthalmologist to do trail test on patients. A brief methodology and results will be shown in this report for both projects.Bachelor of Engineerin

David Myung - One of the best experts on this subject based on the ideXlab platform.

  • utility and feasibility of teleophthalmology using a smartphone based Ophthalmic Camera in screening camps in nepal
    Asia-Pacific journal of ophthalmology, 2020
    Co-Authors: Sean Collon, David Chang, Geoffrey Tabin, Karen Hong, David Myung, Suman S Thapa
    Abstract:

    Purpose To determine whether use of a mobile device-based Ophthalmic Camera by Ophthalmic technicians (OTs) in village screening camps in Nepal followed by remote image interpretation by an ophthalmologist can improve detection of ocular pathology and medical decision-making. Design Evaluation of mobile device-based Ophthalmic Camera through study of before and after clinical decision-making. Methods One hundred forty patients over 18 years of age presenting to remote screening camps with best-corrected visual acuity ≤20/60 in one or both eyes were enrolled. Participants were examined by an OT with direct ophthalmoscopy. The technician recorded a diagnosis for each eye and a disposition for each patient. Patients then had anterior segment and fundus photos and/or videos taken using a smartphone-based Ophthalmic Camera system. Photos and videos were uploaded to a secure, HIPAA-compliant, cloud-based server, and interpreted by masked ophthalmologists from XXX, who independently recorded diagnoses and a disposition for each patient. Results The diagnoses given by OTs and ophthalmologists differed in 42.4% of eyes. Diagnosis agreement was highest for cataract [k = 0.732, 95% confidence interval (CI) 0.65-0.81], but much lower for posterior segment (retina/optic nerve) pathology (k = 0.057, 95% CI -0.03-0.14). Ophthalmologists and OTs suggested different dispositions for 68.6% of patients. Agreement was highest for cataract extraction (k = 0.623, 95% CI 0.49-0.75), whereas agreement for referral to XXX was lower (k = 0.12, 95% CI 0.00-0.24). Conclusions Remote ophthalmologist consultation utilizing a mobile device Ophthalmic Camera system is logistically feasible, easily scalable, and capable of capturing high-quality images in the setting of rural eye screening camps. Although OTs are well equipped to identify and triage anterior segment pathology, this technology may be helpful in the detection of and referral for posterior segment pathology.

  • clinical application of a smartphone based Ophthalmic Camera adapter in under resourced settings in nepal
    Journal of Mobile Technology in Medicine, 2017
    Co-Authors: Carmel L Mercado, David Chang, Suman S Thapa, John D Welling, Matthew Oliva, Reeta Gurung, Sanduk Ruit, Geoff Tabin, David Myung
    Abstract:

    Background The ability to obtain high quality ocular images utilizing smartphone technology is of special interest in under-resourced parts of the world where traditional ocular imaging devices are cost-prohibitive, difficult to transport, and require a trained technician for operation. Purpose The purpose of this study was to explore potential anterior and posterior segment ocular imaging use cases for a smartphone-based Ophthalmic Camera adapter (Paxos Scope, Digisight Technologies, San Francisco, CA, USA) in under-resourced settings in Nepal. Methods From September to November of 2015 we utilized the Paxos Scope smartphone Camera adapter coupled with an iPhone 5 to explore anterior and posterior segment clinical applications for this mobile technology. We used the device at a tertiary eye care facility, a rural eye hospital and a rural cataract outreach camp. We tested the device's capability for high quality photo-documentation in clinic, in the operating room, and in the outreach camp setting. Images were automatically uploaded to a secure, cloud-based electronic medical record system that facilitated sharing of images with other providers for telemedicine purposes. Results Herein we present 17 ocular images documenting a wide variety of anterior and posterior segment pathology using the Paxos Scope from clinical cases seen in a variety of settings in Nepal. Conclusions We found the quality of both the anterior and posterior segment images to be excellent in the clinic, the operating room, and the outreach camp settings. We found the device to be versatile and user-friendly, with a short learning curve. The Paxos Scope smartphone Camera adapter may provide an affordable, high-quality, mobile ocular imaging option for under-resourced parts of the world.

Ruta Skrinska - One of the best experts on this subject based on the ideXlab platform.

  • improved documentation of retinal hemorrhages using a wide field digital Ophthalmic Camera in patients who experienced abusive head trauma
    JAMA Pediatrics, 2001
    Co-Authors: Thomas A Nakagawa, Ruta Skrinska
    Abstract:

    Objective To describe the clinical use of a wide-field digital Ophthalmic Camera (RetCam 120; Massie Research Laboratories, Inc, Dublin, Calif) for the documentation of retinal hemorrhages in patients who experienced abusive head trauma. Design Case series. Setting Pediatric intensive care unit at a tertiary care center. Participants Children with suspected abusive head trauma. Results Eight children were studied during a 9-month period. The median age of the children was 2.25 months (range, 0.8-18.0 months). There were 4 male and 4 female patients. All patients had intracranial bleeding, documented by computed axial tomographic scans of the head. Of the 8 patients, 6 had bilateral retinal hemorrhages. All patients underwent a formal examination by a pediatric ophthalmologist (R.S. and others) using a wide-field digital Ophthalmic Camera. Three children died. Conclusions The wide-field digital Ophthalmic Camera allowed good visualization and produced high-quality photographic images, resulting in instant bedside documentation of retinal pathological features. The wide-field digital Ophthalmic Camera provides a new tool for the evaluation and precise documentation of retinal hemorrhages in suspected and confirmed cases of abusive head trauma.