title: Focal biologically inspired feature for glaucoma type classification.
abstract: Glaucoma is an optic nerve disease resulting in loss of vision. There are two common types of glaucoma: open angle glaucoma and angle closure glaucoma. Glaucoma type classification is important in glaucoma diagnosis. Ophthalmologists examine the iridocorneal angle between iris and cornea to determine the glaucoma type. However, manual classification/grading of the iridocorneal angle images is subjective and time consuming. To save workload and facilitate large-scale clinical use, it is essential to determine glaucoma type automatically. In this paper, we propose to use focal biologically inspired feature for the classification. The iris surface is located to determine the focal region. The association between focal biologically inspired feature and angle grades is built. The experimental results show that the proposed method can correctly classify 85.2% images from open angle glaucoma and 84.3% images from angle closure glaucoma. The accuracy could be improved close to 90% with more images included in the training. The results show that the focal biologically inspired feature is effective for automatic glaucoma type classification. It can be used to reduce workload of ophthalmologists and diagnosis cost.
authors: Institute for Infocomm Research, Agency for Science, Technology and Research, Singapore. jcheng@i2r.a-star.edu.sg
authors: Jun
authors: J
authors: Cheng
authors: Dacheng
authors: D
authors: Tao
authors: Jiang
authors: J
authors: Liu
authors: Damon Wing Kee
authors: DW
authors: Wong
authors: Beng Hai
authors: BH
authors: Lee
authors: Mani
authors: M
authors: Baskaran
authors: Tien Yin
authors: TY
authors: Wong
authors: Tin
authors: T
authors: Aung
mesh_terms: D000465:Algorithms; D003315:Cornea / Q000473:pathology; D003941:Diagnostic Techniques, Ophthalmological; D005901:Glaucoma / Q000145:classification* / Q000175:diagnosis*; D015812:Glaucoma, Angle-Closure / Q000175:diagnosis; D005902:Glaucoma, Open-Angle / Q000175:diagnosis; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007498:Iris / Q000473:pathology*; D008954:Models, Biological; D015233:Models, Statistical; D016011:Normal Distribution; D015203:Reproducibility of Results; D012984:Software