Floaters: Are They Related to Corneal Reshaping?

Is it floaters?

Doctor, I recently noticed that when I look at reflective surfaces (or the computer screen), I see "small light spots" moving across my peripheral vision.
If I deliberately look at a large bright area (like the sky), I can see many small light spots moving around like bugs.
Is this vitreous floaters? Additionally, I have been undergoing orthokeratology for almost four years now; could this be related? Also, my eyes have been feeling dry lately.
Does this indicate any underlying condition?

Xiao Yu, 10~19 year old female. Ask Date: 2005/03/19

Dr. Liu Jingxian reply Ophthalmology

Dear Concerned Fish,
Regarding your question, here are the answers:
1.
As shown in the image, there is a transparent structure inside the eyeball (which occupies 4/5 of the eyeball's volume) known as the "vitreous body."
2.
With age or in cases of high myopia, the vitreous body gradually degenerates and liquefies, forming some opaque impurities that float within the eyeball.
When you look at a brighter or whiter background, you may sometimes see small particles or strands moving across your field of vision.
This condition is referred to as "floaters."
3.
The cause of "floaters": Most patients experience this due to the aforementioned cause (degeneration of the vitreous body, changing from transparent to opaque, resulting in impurities).
However, a small number of patients may develop "floaters" due to retinal diseases that lead to vitreous degeneration, such as retinal tears or other ocular conditions.
4.
Therefore, it is recommended that you undergo a "dilated fundus examination" to confirm whether there are any retinal tears.
Additionally, patients with "floaters" should generally monitor whether the symptoms are "increasing" and if there are any abnormal "flashes" occurring.
If the frequency of these symptoms increases, it is advisable to consult a retinal specialist promptly, as early detection and treatment of retinal diseases can be crucial.
5.
Lastly, corneal reshaping procedures do not cause the aforementioned conditions; however, poor eye hygiene can pose a risk for corneal disorders.
Wishing you good health,
Dr.
Liu Jing-Chih
Attending Physician, Ophthalmology
Taipei City Hospital, Zhongxing Branch

Reply Date: 2005/03/19

More Info

Floaters, or "floaters in the vision," are common visual disturbances that many people experience, especially as they age. They often appear as small spots, threads, or cobweb-like structures that drift across your field of vision. These floaters are typically caused by changes in the vitreous humor, the gel-like substance that fills the eye. As we age, the vitreous can shrink and become more liquid, leading to the formation of these floaters.
In your case, the appearance of small light spots when looking at bright surfaces, such as a computer screen or the sky, is indeed characteristic of floaters. They can be particularly noticeable against a bright background, which is why you might see them more when looking at reflective or bright objects. The sensation of seeing these "little light points" that move around can be disconcerting, but they are usually harmless.

Regarding your question about corneal reshaping, such as through orthokeratology (the process of using specially designed contact lenses to reshape the cornea), there is no direct evidence to suggest that this procedure causes or exacerbates floaters. Orthokeratology primarily affects the shape of the cornea to improve refractive errors like myopia (nearsightedness) and does not typically influence the vitreous humor or the retina, where floaters originate. However, any changes in vision or discomfort in the eyes should be discussed with your eye care professional, especially since you have been undergoing this treatment for about four years.

The sensation of dryness or "grittiness" in your eyes, which you mentioned, could be related to several factors. One common cause is dry eye syndrome, which can occur due to prolonged screen time, environmental factors, or even as a side effect of contact lens wear. If you are experiencing persistent dryness or discomfort, it is essential to consult with your eye doctor. They can assess your symptoms and determine whether they are related to your contact lens use, environmental factors, or another underlying condition.

In summary, while floaters are generally harmless and often a normal part of aging, any new or worsening symptoms should be evaluated by an eye care professional. They can provide a thorough examination to rule out any serious conditions and offer appropriate treatment options for dry eyes or other concerns you may have. It's always better to err on the side of caution when it comes to your eye health, especially if you notice changes in your vision or experience discomfort.

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