The aim of the study is to use machine learning to develop an IT tool able to differentiate between eye conditions analysing corneal biomechanical data.
Data will be collected using two different commercially available devices that are able to measure corneal biomechanics. Corneal biomechanics will be measured in participants with different conditions: glaucoma, ocular hypertension, corneal conditions, and healthy controls as it is well established that the above-mentioned conditions cause changes in corneal biomechanical properties. Corneal biomechanics are the mechanical properties of the cornea, as rigidity, elasticity and it is possible to measure them using two devices: Ocular Response Analyzer (ORA) or Corneal Visualization Scheimpflug Technology (Corvis ST). Both devices use a puff of air to temporally flatten the cornea and derive the properties of the tissue. Participants with ocular conditions will be recruited at Birmingham and Midlands Eye Centre (BMEC) at the Glaucoma and Anterior Eye clinics among patients attending for their routine clinical appointment. Healthy controls will be recruited at Aston University. This study requires only one visit and there is no need of follow up. A portion of the data collected will be used to train machine learning algorithms to differentiate between conditions, the remaining data will be used to test the accuracy of newly created algorithms. The algorithm will be developed using Orange Data Mining.
Study Type
OBSERVATIONAL
Measurement of corneal biomechanics
First applanation velocity
Velocity during the first applanation of the cornea, measured using Corivs ST \[m/s\]
Time frame: Day 1
First applanation time
Time frame of the first applanation of the cornea, measured using Corivs ST \[s\]
Time frame: Day 1
First applanation lenght
Lenght of the first applanation of the cornea, measured using Corivs ST \[mm\]
Time frame: Day 1
Second applanation velocity
Velocity during the second applanation of the cornea, measured using Corivs ST \[m/s\]
Time frame: Day 1
Second applanation time
Time frame of the second applanation of the cornea, measured using Corivs ST \[s\]
Time frame: Day 1
Second applanation lenght
Lenght of the second applanation of the cornea, measured using Corivs ST \[mm\]
Time frame: Day 1
Highest concavity time
Time frame at highest concavity, measured using Corivs ST \[s\]
Time frame: Day 1
Highest concavity peak distance
Distance between the 2 surrounding peaks at the highest concavity, measured using Corivs ST \[mm\]
Time frame: Day 1
Highest concavity radius
Radius of curvature at highest concavity, measured using Corivs ST \[mm\]
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Day 1
Highest concavity deformation amplitude
Maximal displacement of corneal apex between normal corneal shape and highest concavity, measured using Corivs ST \[mm\]
Time frame: Day 1
Corneal hysteresis
Difference in terms of intensity of puff of air between the first and second applanation, measured using ORA \[mmHg\]
Time frame: Day 1
Corneal resistance factor
Overall resistance of the cornea, measured using ORA \[mmHg\]
Time frame: Day 1
Intraocular pressure measured using Corvis ST
Value of intraocular pressure measured according to the pressure of the air needed to applanate the cornea.
Time frame: Day 1
Intraocular pressure measured using ORA
Value of intraocular pressure measured according to the pressure of the air needed to applanate the cornea.
Time frame: Day 1
Pachymetry
Measure of corneal thickness using Corvis ST
Time frame: Day 1