Keratoconus Screening in Primary Eye Care – A General Overview

Ortiz-Toquero, Sara; Martín, Raúl

doi:10.17925/eor.2016.10.02.80

Cited by 6 publications

(4 citation statements)

References 85 publications

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“…50 Upskilling programmes are usually mandated across healthcare professions for specific purposes such as when the scope of practice is increased or for special needs such as the case of KC. 51,52 Optometrists in this study have shown an interest in enrolling in such programmes. They are mostly young adults and therefore are likely to embrace the challenges with their knowledge and skills of KC patient care given their improvement.…”

Section: Optometrists (%)mentioning

confidence: 88%

Self-reported knowledge and skills related to diagnosis and management of keratoconus among public sector optometrists in the Limpopo province, South Africa

Nkoana

Moodley

Mashige

2022

African Journal of Primary Health Care & Family Medicine

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Background: Keratoconus (KC) has been regarded as a rare condition, although recent studies, including those in South Africa, suggest it is common and is increasing in prevalence. Furthermore, South African-based studies have shown that KC is normally detected at advanced or severe stages. Knowledge and skills for examination, diagnosis and management of KC by optometrists are important for the early detection and management of the disease.Aim: This study aimed to evaluate self-reported knowledge and skills for examination, diagnosis and management of KC patients among public sector optometrists.Setting: Seven public hospitals of the Capricorn district of the Limpopo province, South Africa.Methods: A quantitative cross-sectional descriptive study design was used. A self-administered online questionnaire was used to collect data on demographic characteristics of participants and their knowledge, skills and practice for the diagnosis and management of KC.Results: Twenty-four optometrists (n = 24) with a mean age of 39 ± 5.67 years, 18 (75%) of whom were female, participated in the study. Nineteen (79%) reported that their hospitals did not have the appropriate equipment to examine, diagnose and manage KC patients. Lack of equipment, poor knowledge, skills and competencies, hospital’s level of services, policy and lack of interest were cited as barriers to contact lens fittings in KC patients. Using a dichotomised summation of self-reported knowledge and skills of KC, 13 (54.2%) of the optometrists were knowledgeable and skilled on risk factors of KC and examining, diagnosing and managing KC patients.Conclusion: A significant proportion of optometrists did not have the appropriate knowledge and skills to examine, diagnose and manage KC patients. Lack of equipment and poor knowledge and skills were the main barriers to contact lens fittings in managing KC.Contribution: This article highlights the need for the district to upskill the optometrists through a structured programme with a theory and practical component and also provide the necessary equipment to enhance patient care.

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Section: Optometrists (%)mentioning

confidence: 88%

Self-reported knowledge and skills related to diagnosis and management of keratoconus among public sector optometrists in the Limpopo province, South Africa

Nkoana

Moodley

Mashige

2022

African Journal of Primary Health Care & Family Medicine

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“…The data available in literature does not prove to be definitive in diagnosing Keratoconus as there is a considerable overlap between normal corneas and Forme Fruste Keratoconus 16,17 . In this study, we compared the accuracy of CBI in Keratoconus screening by calculating their sensitivity and specificity against TBI from the collected data and their positive and negative predictive value.…”

Section: Discussionmentioning

confidence: 97%

Accuracy of the Corvis Biomechanical Index in Keratoconus Screening

Hanan¹,

Ali²,

Naeem³

2020

pak J Ophthalmol

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Purpose: To evaluate the accuracy of the Corvis Biomechanical Index (CBI) in screening of patients with Keratoconus. Study Design: Cross sectional study. Place and Duration of Study: Amanat Eye Hospital Peshawar from July 2018 to June 2019. Material and Methods: One thousand eyes were included in this study. Patients who came for keratorefractive laser procedure or collagen cross linkage were included in the study by convenient sampling technique. Six hundred and eleven patients had early Keratoconus and 389 were normal controls. Control group included those individuals who had visual acuity of 6/6 with no clinical feature of Keratoconus and normal TBI. All individuals included in the study underwent a thorough ocular examination, CBI and TBI tests. SPSS version 23 was used for statistical analysis of collected data. Results: The mean CBI value was 0.3186 ± 0.407 standard deviation (SD), the standard error (SE) of the mean was 0.0129 with a 95% confidence interval (CI) of 0.293 to 0.343. The minimum CBI value was 0.00 and the maximum value was 1.00. The mean Tomographic Biomechanical Index (TBI) value was 0.465 ± 0.392 SD, SE was 0.124 with a 95% CI of 0.222 to 0.708. The range of TBI values was 0.00 to 1.00. For CBI, sensitivity was 58.2%, specificity was 100%, positive predictive value was 100%, and negative predictive value was 61.2%. Conclusion: Although CBI is accurate in terms of specificity and sensitivity, the result should be interpreted in combination with clinical data and other topographic and tomographic parameters.

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“…Corneal tomography is a technique that allows for three-dimensional visualization of the anterior and posterior corneal surfaces, along with assessment of corneal thickness ( Figure 1 ). 7 , 8 It has emerged as a promising screening tool in the identification of candidates for early corneal collagen cross-linking to prevent disease progression and more invasive surgical interventions. A recent study by Kong et al reported that while nearly 50% of patients receive corneal topography at their initial visit, the use of corneal tomography at a patient’s first visit has increased significantly since 2015, with pediatric patients more likely to receive corneal tomography compared to adult patients.…”

Section: Screening For Keratoconusmentioning

confidence: 99%

Keratoconus Diagnosis and Treatment: Recent Advances and Future Directions

Bui,

Truong,

Pasricha

et al. 2023

OPTH

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Keratoconus is a disorder characterized by progressive corneal thinning and steepening that may result in significant visual impairment secondary to high astigmatism, corneal scarring, or even corneal perforation. Early detection and screening of keratoconus are essential for effective management and treatment. Several screening methods, such as corneal topography and tomography, corneal biomechanics, and genetic testing, are being developed to detect keratoconus at an early stage. Once detected, prevention of progression is the mainstay of keratoconus management. Corneal collagen cross-linking is a minimally invasive treatment option that can slow or halt the progression of keratoconus. Additionally, recent studies have investigated the potential use of copper sulfate eye drops (IVMED-80) and extracellular vesicles to prevent the progression of keratoconus as non-invasive treatment options. For visual rehabilitation, currently available treatments include scleral lenses, intracorneal ring segments, corneal allogenic intrastromal ring segments, and deep anterior lamellar keratoplasty. The safety and efficacy of these emerging treatment options for keratoconus are currently being investigated.

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Keratoconus Screening in Primary Eye Care – A General Overview

Cited by 6 publications

References 85 publications

Self-reported knowledge and skills related to diagnosis and management of keratoconus among public sector optometrists in the Limpopo province, South Africa

Self-reported knowledge and skills related to diagnosis and management of keratoconus among public sector optometrists in the Limpopo province, South Africa

Accuracy of the Corvis Biomechanical Index in Keratoconus Screening

Keratoconus Diagnosis and Treatment: Recent Advances and Future Directions

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