Retinal detachment is associated with a number of factors, some of which are known as predisposing factors because they are highly susceptible to retinal detachment. Myopia: Myopia is prone to vitreous degeneration and posterior detachment. Retinal degeneration such as lattice-like degeneration and paving stone-like degeneration are more likely to be seen in myopic eyes. The fragility of the peripheral retina in myopic eyes, along with vitreoretinal traction, can easily lead to retinal detachment. (ii) Aphakic eyes: People with vitreous complications associated with cataract surgery are particularly susceptible to retinal detachment. It occurs in cataract intracapsular extraction latter may be related to the movement of the vitreous that fills the original crystalline space. Enlargement of the vitreous cavity increases the space for the vitreous to oscillate, giving it increased traction on the retina. Intraoperative vitreous loss exacerbates this effect. In the presence of vitreous ingrowth, the natural condition of posterior vitreous detachment is altered, thus inducing a vitreous effect on the retina of the aphakic eye. (iii) Age: In the elderly, the vitreous body is mostly degenerated and liquefied, and is also more often associated with various retinal degenerations, thus predisposing to retinal detachment. Retinal degeneration: Some retinal degeneration, such as lattice-like degeneration, frost-like degeneration, paving stone-like degeneration, especially prone to retinal detachment. This is because the degeneration reduces the adhesion of the retina and the resistance to traction. ⑤ Trauma: In contusion, the moment of impact motion can temporarily deform the eyeball, and although the wall of the eyeball can comply with the external force, the vitreous body cannot, and at this time the base of the vitreous body is separated from the wall of the globe, which is prone to produce retinal serrated rim dissection. Perforating trauma can directly cause retinal detachment, while late vitreous proliferation can lead to traction retinal detachment.