Modern automatic cataract detection methods comprise of three steps: feature extraction, pre-processing,
and classi?cation. Based on the algorithms employed in the feature extraction or classi?cation stages,
these techniques are divided into two groups: machine learning (ML)-based and deep learning (DL)-based
methods. These techniques have been covered in recent studies [9] -[12]. We quickly review a few of the
most important works from both groups in this section.
A. Past Works Based On Machine Learning
There are many [13] Proposed techniques for cataract identi?cation, designed for widespread screening
or as a step before classifying cataracts.The study focused on training the linear discriminant analysis
(LDA) algorithm.
using an improved texture feature.A clinical database experiment's results showed an accuracy of 84.8%.
A three-step automated cataract detection approach was proposed by Yang et al. A top to bottom hat