Status:
COMPLETED
Deep Learning for Classification of Scheimpflug Corneal Tomography Images
Lead Sponsor:
Assiut University
Conditions:
Eye Diseases
Eligibility:
All Genders
18-45 years
Brief Summary
Keratoconus is a common disorder. An early diagnosis influences the disease prognosis in the affected patients and prevents postoperative complications in patients with keratoconus considering refract...
Eligibility Criteria
Inclusion
- Keratoconus group:
- Presence of a central protrusion of the cornea with Fleischer ring, Vogt striae, or both by slitlamp examination.
- irregular cornea determined by distorted keratometry mires and distortion of retinoscopic red reflex or both in addition to the following topographic findings as summarized by Pińero and colleagues :
- focal steepening located in a zone of protrusion surrounded by concentrically decreasing power zones
- focal areas with diopteric (D) values \>47.0D
- inferior- superior(I-S) asymmetry measured to be \> 1.4 D
- Angling of the hemimeridians in an asymmetric or broken bowtie pattern with skewing of the steepest radial axis(SRAX) .
- Suspicious group:
- • Defined as subtle corneal tomographic changes as the aforementioned keratoconus abnormalities in the absence of slit- lamp or visual acuity changes typical of keratoconus (forme fruste keratoconus).
- Normal group:
- Refractive surgery candidates
- Refractive error of less than 8.0 D sphere
- Less than 3.0 D of astigmatism
- without clinical, topographic or tomographic signs of keratoconus or suspect keratoconus.
Exclusion
- Systemic disease
- Other corneal disease such as pellucid marginal degeneration
- History of trauma
- Corneal surgery such as corneal cross- linking for progressive keratoconus.
Key Trial Info
Start Date :
August 10 2020
Trial Type :
OBSERVATIONAL
Allocation :
ACTUAL
End Date :
August 25 2020
Estimated Enrollment :
1669 Patients enrolled
Trial Details
Trial ID
NCT04497207
Start Date
August 10 2020
End Date
August 25 2020
Last Update
October 6 2020
Active Locations (1)
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1
Faculty of Medicine
Asyut, Egypt, 71515