What Causes Eye Floaters and When Should You Be Concerned?

Have you ever noticed small spots, squiggly lines, cobweb-like shapes, or drifting shadows moving across your vision?

These visual disturbances, commonly called eye floaters, are very common and often become more noticeable as we age. While many floaters are harmless, certain changes in floaters can signal a more serious eye condition that requires prompt evaluation.

Understanding the difference between normal floaters and concerning symptoms can help protect your vision and eye health.

Quick Answer

Eye floaters are often caused by normal age-related changes within the eye. However, a sudden increase in floaters, flashes of light, loss of peripheral vision, or a curtain-like shadow in your vision may indicate a more serious condition and should be evaluated promptly.

Key Takeaways

• Eye floaters are common and often harmless.
• Floaters may appear as spots, strands, cobwebs, or shadows drifting through your vision.
• Age-related changes inside the eye are the most common cause.
• A sudden increase in floaters or flashes of light should be evaluated promptly.
• Comprehensive eye exams can help determine whether floaters are benign or require additional care.

What Are Eye Floaters?

Floaters are small shadows that appear to drift across your field of vision.

Patients often describe floaters as:

• Black or gray spots
• Strings or squiggly lines
• Cobwebs
• Transparent circles
• Tiny floating specks

Floaters may seem to move away when you try to look directly at them and are often most noticeable when looking at bright backgrounds such as:

• Blue skies
• White walls
• Computer screens
• Brightly lit rooms

What Causes Eye Floaters?

The most common cause of floaters is a natural age-related change within the eye.

Inside the eye is a gel-like substance called the vitreous. Over time, this gel gradually changes consistency and may begin to shrink or separate from the retina.

As these changes occur, tiny clumps or strands can form within the vitreous, creating shadows that appear as floaters.

This process is very common and often occurs as part of normal aging.

Who Is More Likely to Develop Floaters?

Floaters can occur at any age but are more common in:

• Adults over 50
• People who are nearsighted
• Individuals who have had cataract surgery
• People with a history of eye injury
• Individuals with certain eye conditions

Many patients notice floaters gradually over time and adapt to them without difficulty.

When Are Floaters Usually Not a Cause for Concern?

Many floaters are simply part of the natural aging process.

Floaters are often considered less concerning when they:

• Develop gradually
• Remain relatively stable
• Do not significantly increase in number
• Occur without flashes of light
• Do not affect peripheral vision

Even when floaters seem harmless, they should still be discussed during routine eye exams.

Warning Signs That Should Not Be Ignored

While many floaters are benign, certain symptoms warrant prompt evaluation.

A Sudden Increase in Floaters

A rapid appearance of many new floaters should be assessed by an eye care professional.

Flashes of Light

Seeing flashes of light, especially in peripheral vision, may indicate traction on the retina.

A Curtain or Shadow in Your Vision

A dark curtain, veil, or shadow affecting part of your vision should be evaluated immediately.

Loss of Peripheral Vision

Changes in side vision can indicate a potentially serious retinal problem.

Sudden Blurred Vision

New blurry vision accompanying floaters should not be ignored.

Can Cataracts Cause Floaters?

Cataracts do not directly cause floaters.

However, many people develop both cataracts and floaters as they age, which can make it difficult to determine the source of visual symptoms without an eye examination.

Can Dry Eyes Cause Floaters?

Dry eye disease does not cause true floaters.

However, dry eye symptoms can create visual disturbances such as:

• Blurry vision
• Fluctuating vision
• Sensitivity to light

A comprehensive exam can help distinguish between dry eye symptoms and actual vitreous floaters.

How Are Floaters Evaluated?

A comprehensive dilated eye exam allows your doctor to examine the retina and internal structures of the eye.

During the exam, your doctor can determine whether your floaters are consistent with normal age-related changes or if additional evaluation is needed.

This examination is especially important when floaters are new, increasing, or accompanied by other symptoms.

Frequently Asked Questions

Are eye floaters normal?

Yes. Many floaters are a normal part of aging and become more common over time.

Will floaters go away?

Some floaters become less noticeable over time as the brain adapts to them. Others may persist but become less bothersome.

Should I worry about one floater?

A single stable floater is often not concerning, but any new visual symptoms should be discussed during an eye exam.

Can floaters cause blindness?

Most floaters do not threaten vision. However, floaters associated with retinal problems may require prompt evaluation to protect vision.

How Horizon Can Help

At Horizon Eye Specialists & LASIK Center, our doctors provide comprehensive eye exams and dilated retinal evaluations to help determine the cause of floaters and other vision changes. We carefully assess your eye health to identify whether symptoms are related to normal aging changes or whether additional evaluation may be needed.

With locations throughout the Phoenix Valley, our team helps patients across Arizona understand their symptoms and make informed decisions about their eye health.

The Horizon Difference

Visual symptoms can be confusing and sometimes alarming. Our team takes the time to evaluate your concerns thoroughly and explain findings in a clear, understandable way. Whether your floaters are related to normal age-related changes or require further attention, our goal is to help you feel informed and confident about your eye health.

Schedule an Eye Exam

If you've recently noticed new floaters, flashes of light, blurry vision, or other changes in your sight, don't ignore them.

Not sure whether your floaters are normal? A comprehensive eye exam can help determine the cause of your symptoms and identify whether additional evaluation is needed.

Schedule an appointment with Horizon Eye Specialists & LASIK Center to discuss your concerns and take a proactive approach to protecting your vision.