Patient's question:
Main symptoms: What causes the ratio of cups to plates to become larger? Can it be prevented? If it becomes larger, does it definitely mean it cannot be cured? Onset time: Test results:Doctor's answer:
In addition to checking the cup-to-disc ratio, you also need to check the visual field and intraocular pressure. A widened cup-to-disc ratio is commonly seen in patients with glaucoma. What is the cup-to-disc ratio? It refers to our optic disc, which is the disc. Normally, there is a physiological excavation in the optic disc. If it exceeds the normal size, it may form a cup. In normal individuals, the cup and disc do not differ significantly, not exceeding 0.5, which is the cup-to-disc ratio. A widened cup-to-disc ratio is often pathological, for example, in cases of glaucoma, which can cause optic nerve atrophy and may manifest as a widened cup-to-disc ratio. However, a widened cup-to-disc ratio does not necessarily indicate glaucoma. Some people have what we call a physiological large optic cup, with a very wide cup-to-disc ratio, but it is unrelated to glaucoma and is normal. Physiologically, the two eyes are symmetrical, with normal intraocular pressure and visual field, and no progressive changes during follow-up. Myopia, especially high myopia, can easily be misdiagnosed as glaucoma based on the morphology, color of the optic disc, changes in the retina, and visual field examination, requiring detailed evaluation. A widened cup-to-disc ratio is often associated with glaucoma, so it should not be taken lightly. It is essential to undergo a thorough examination at a hospital equipped with glaucoma screening conditions. Since the small pits in the optic disc are formed when optic nerve fibers converge and pass through the sieve pores, and since nerve damage is irreversible, the C/D ratio will not shrink.