What are the four stages of macular hole classification according to Gass?
Jul 28, 2023
Source: Cainiu Health
Dr. Cui Xin
Introduction
In general, Gass classification divides macular holes into four stages: Stage I, Stage II, Stage III, and Stage IV. In Stage I, there is vitreous traction on the macular area while the macula itself remains normal. In summary, macular holes exhibit different changes at various stages. Patients are advised to seek timely medical evaluation and treatment at a正规 hospital upon experiencing the aforementioned symptoms.
Generally, Gass classifies macular holes into four stages: Stage I, Stage II, Stage III, and Stage IV. The specific analysis is as follows:
1. Stage I
There is vitreous traction on the macular area, while the macula itself remains normal.
2. Stage II
A crescent-shaped defect in the retinal nerve fiber layer begins to appear, with the hole typically less than 350 μm in diameter.
3. Stage III
Full-thickness defects begin to form, resulting in a complete full-thickness retinal nerve layer defect (hole).
4. Stage IV
The macular hole is fully developed, accompanied by posterior vitreous detachment.
In summary, macular holes exhibit different characteristics at various stages. Patients experiencing the above symptoms are advised to seek timely medical evaluation and treatment at a qualified hospital.
