The difference between floaters and cataracts

Written by Li Zhen Dong
Ophthalmology
Updated on September 01, 2024
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Floater disease is a vitreous opacity, while cataract is a lens opacity; these two conditions are not the same issue.

Vitreous opacities can be classified as physiological or pathological. Physiological vitreous opacities appear as moving objects in front of the eyes, which are less noticeable in the dark and more noticeable under bright light; cataracts gradually affect vision. Physiological vitreous opacities in floater disease generally do not affect vision, but pathological vitreous opacities do affect vision. An eye ultrasound shows severe vitreous opacities and retinal changes, whereas the cloudiness in the lens, namely cataracts, usually means the vitreous and retina are normal.

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Written by Li Zhen Dong
Ophthalmology
46sec home-news-image

The difference between floaters and cataracts

Floater disease is a vitreous opacity, while cataract is a lens opacity; these two conditions are not the same issue. Vitreous opacities can be classified as physiological or pathological. Physiological vitreous opacities appear as moving objects in front of the eyes, which are less noticeable in the dark and more noticeable under bright light; cataracts gradually affect vision. Physiological vitreous opacities in floater disease generally do not affect vision, but pathological vitreous opacities do affect vision. An eye ultrasound shows severe vitreous opacities and retinal changes, whereas the cloudiness in the lens, namely cataracts, usually means the vitreous and retina are normal.

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Written by Li Zhen Dong
Ophthalmology
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Can flying mosquito disease go untreated for over twenty years?

If it is physiological floaters, generally there is no special treatment, and they are relatively stable and do not affect vision. Patients mainly experience floating shapes that vary in appearance in front of their eyes. Typically, these floaters are more visible under bright light and less visible or invisible under dim light. If there are not many floaters, it is advised to rest and treat the symptoms accordingly. If the patient requests treatment, therapies like amino iodine eye drops or sodium hyaluronate eye drops can be used. Treatment can improve the patient's mood, but generally, the condition does not worsen.

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Written by Li Zhen Dong
Ophthalmology
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Can flying mosquito disease be treated with a hot compress on the eyes?

Floaters can completely be treated with warm compresses on the eyes, but if the purpose is to treat floaters, then it is meaningless because warm compresses have no effect on the treatment of floaters. Floaters can be divided into physiological floaters and pathological floaters. Physiological floaters do not affect vision at all; one cannot see clearly in dark places, but can see floaters in bright conditions. In such cases, it is only necessary to ensure adequate rest, use eyes properly, and appropriately use medicines like Ammonium Iodide Peptide Eye Drops, or Phosphatidylcholine Complex Iodine Tablets. If it is a pathological vitreous opacity, one should visit the ophthalmology department for thorough examinations and active treatment to strive for the restoration of vision. (Please use medication under the guidance of a physician.)

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Written by Li Zhen Dong
Ophthalmology
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Is floater related to wearing colored contact lenses?

Floaters are not related to wearing cosmetic contact lenses at all. Floaters are due to vitreous opacity, which can be categorized into physiological and pathological vitreous opacity. Physiological vitreous opacity generally does not affect vision, whereas pathological vitreous opacity significantly impacts vision and requires further examination by an ophthalmologist. Additionally, cosmetic contact lenses are worn on the cornea and mainly cause corneal damage, such as keratitis and conjunctivitis. Therefore, when wearing cosmetic contact lenses, one should handle them correctly, gently, and ensure the lenses are regularly cleaned and soaked as per guidelines.

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Written by Li Zhen Dong
Ophthalmology
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What tests should be done at the hospital for floaters?

To diagnose floaters, hospitals primarily use ultrasound B-scans, which are the most objective and non-invasive examinations, providing insights into the condition of the vitreous body. Floaters can be either physiological or pathological. Physiological floaters generally do not affect vision, and addressing them usually involves rest and proper eye care. If needed, treatment options may include Amniotic Iodine eye drops or oral intake of Lecithin Iodine complexes. However, if the floaters are pathological, proactive eye examinations and rigorous treatment are necessary. In severe cases, surgical intervention might be considered to preserve vision, as the causes of pathological vitreous opacities are diverse.