A macular hole forms when the gel-like substance inside your eye shrinks and pulls on the macula, the tiny central area of the retina responsible for sharp, detailed vision. This pulling force can tear a small hole in the tissue, disrupting the precise arrangement of cells you need for reading, driving, and recognizing faces. Most macular holes develop gradually as part of aging, but trauma and other eye conditions can also trigger them.
How the Vitreous Gel Creates the Problem
Your eye is filled with a clear, jelly-like substance called the vitreous. In a young, healthy eye, the vitreous is firmly attached to the retina by millions of microscopic fibers. As you age, this gel naturally shrinks and begins pulling away from the retina in a process called posterior vitreous detachment, or PVD. This happens to most people eventually and usually causes no harm.
In some cases, though, the vitreous doesn’t detach cleanly. Part of it stays stuck to the macula while the rest pulls away, creating a tug-of-war on some of the most delicate tissue in the body. This sustained traction stretches and distorts the fovea, the very center of the macula where vision is sharpest. If the pulling force is strong enough, it tears through the full thickness of the retinal tissue, leaving a hole.
How a Macular Hole Progresses
Macular holes don’t appear all at once. They develop through a series of stages, each representing more tissue damage.
- Stage 1: The fovea is elevated and stretched by vitreous traction, but the retinal tissue hasn’t broken yet. Vision may be mildly distorted. Some stage 1 cases resolve on their own if the vitreous releases its grip.
- Stage 2: A small break forms, either at the center of the fovea or along its edge. This can develop weeks to months after stage 1. Central vision becomes noticeably blurred or distorted.
- Stage 3: The hole enlarges to 400 micrometers or more. Nearly all stage 2 holes progress to this point. A ring of fluid often collects around the hole, and vision continues to decline.
- Stage 4: The vitreous fully separates from the retina, but the hole remains. At this point the damage is established and won’t reverse without treatment.
The progression from early traction to a full-thickness hole can take weeks to months. Not every case advances through all stages, but the trend is strongly toward worsening without intervention.
Who Is Most at Risk
Macular holes overwhelmingly affect people over 50. The incidence rises sharply with age: about 6 cases per 100,000 people annually in the 40 to 49 age group, jumping to roughly 98 cases per 100,000 in those aged 60 to 69. Women face a 64% higher risk than men, and nearly 73% of macular holes requiring surgery occur in women. The reasons for this gender gap aren’t fully understood, though hormonal differences affecting the vitreous gel are one proposed explanation.
If you’ve already developed a macular hole in one eye, there’s a 10% to 15% chance of developing one in the other eye within five years. However, if the vitreous in your second eye has already fully detached from the retina on its own (a complete PVD), the risk drops dramatically. In one study, no fellow eye with a complete PVD developed a macular hole over a median follow-up of nearly three years. Once the vitreous has cleanly separated, there’s nothing left to pull on the macula.
Trauma and Other Causes
While aging-related vitreous traction causes most macular holes, a direct blow to the eye can create one too. When blunt force hits the front of the eye, the eyeball compresses from front to back and expands sideways. This sudden distortion generates tangential forces at the fovea that can tear through the tissue. Traumatic macular holes usually appear immediately after the injury, though in some cases they develop weeks later. These tend to occur in younger people, since the triggering event is an impact rather than age-related gel changes.
High myopia (severe nearsightedness) is another risk factor. In highly myopic eyes, the eyeball is elongated, which stretches the retina thinner than normal and can create additional mechanical stress at the macula. Eye surgery, long-standing swelling in the macula, and other retinal conditions can also contribute, though these secondary causes are far less common than simple vitreous traction.
Similar Conditions That Aren’t Full Macular Holes
Not every irregularity at the macula is a true macular hole, and the distinction matters because the treatment and outlook differ considerably.
A lamellar hole involves only partial-thickness damage. Imaging shows thinning and splitting of the inner retinal layers, with the central retina measuring noticeably thinner than normal (averaging around 72 micrometers, compared to a normal thickness of about 146 micrometers). These often cause milder symptoms and don’t always require surgery.
A macular pseudohole isn’t a hole at all. It’s caused by a membrane growing on the surface of the retina that contracts and bunches up the tissue around the fovea, creating the appearance of a steep pit. The retinal thickness at the center is actually normal or even increased. Pseudoholes can distort vision but generally carry a better prognosis than true holes.
Distinguishing between these conditions requires optical coherence tomography (OCT), a non-invasive imaging scan that produces cross-sectional pictures of the retina with microscopic detail.
What Happens With Treatment
The standard treatment for a full-thickness macular hole is a surgical procedure called vitrectomy. The surgeon removes the vitreous gel to eliminate the traction, peels away a thin membrane from the retinal surface to help the hole close, and fills the eye with a gas bubble that presses the edges of the hole together while it heals. Your body gradually reabsorbs the gas bubble over several weeks.
Modern success rates are excellent. In one study of 68 eyes, the single-procedure closure rate was 100%. Even for chronic macular holes that had been open for more than a year, surgical closure succeeded in approximately 95% of cases, and vision improved in all patients who achieved successful closure. Outcomes are generally better for smaller, more recently formed holes, which is one reason early detection matters.
Recovery typically involves maintaining a specific head position for a period after surgery to keep the gas bubble pressing against the macula, though recent research suggests that strict face-down positioning may not be necessary in all cases. Vision improvement continues gradually over weeks to months as the retinal tissue heals, though it rarely returns to completely normal levels.