Is there a link between sleep apnea and glaucoma?

Does having sleep apnea increase your risk of developing glaucoma?

Yes, the evidence consistently shows that obstructive sleep apnea (OSA) is a significant risk factor for developing glaucoma, especially the most common form, open-angle glaucoma. A large 12-year study of over 6,000 people found that those with OSA had a 42% higher risk of being diagnosed with open-angle glaucoma [3]. Another major study from Singapore, involving over 3,000 participants, found that people at intermediate or high risk for OSA had 50% higher odds of having any type of glaucoma [6]. These findings are supported by several other large population-based studies that all point in the same direction [1][5][7].

The link is not just a statistical association; it also appears to be a matter of cause and effect. One study using genetic data found no strong evidence for a shared genetic cause, suggesting that the link is driven by the physiological effects of OSA itself—like repeated drops in oxygen levels (hypoxia) and changes in blood flow to the eye—rather than shared genes [9]. This makes the case for screening even stronger, as treating OSA could potentially modify the risk.

If you already have glaucoma, does sleep apnea make it progress faster?

Yes, the evidence strongly suggests that untreated sleep apnea can accelerate the progression of glaucoma, leading to faster vision loss. A large 2025 study of over 10,000 people with mild-to-moderate open-angle glaucoma found that those with OSA were more than twice as likely to develop severe glaucoma within 3 years (odds ratio 2.79) and this elevated risk persisted at 5 and 10 years [2]. This means that for a person with both conditions, their glaucoma is likely to worsen more quickly.

This finding is reinforced by a smaller but more detailed study that tracked structural damage to the optic nerve. It found that people with moderate-to-severe OSA had an 8.4 times higher risk of their retinal nerve fiber layer (a key part of the optic nerve) thinning over time, compared to those with mild or no OSA [8]. Another prospective study confirmed that the severity of OSA was directly linked to faster deterioration in the visual field (the area you can see) [10]. Taken together, this evidence shows that OSA is not just a risk factor for developing glaucoma, but a potent accelerator of the disease.

What does this mean for you? Should you be screened?

The practical takeaway is clear: if you have sleep apnea, you should have a comprehensive eye exam to check for glaucoma, and if you have glaucoma, you should be evaluated for sleep apnea. The evidence shows that the two conditions are strongly linked, and that untreated OSA can make glaucoma worse [2][8]. While one study did not find that glaucoma patients needed more surgeries or medications overall [4], the more recent and larger studies strongly suggest that OSA makes glaucoma more aggressive and harder to manage [2].

The good news is that treating sleep apnea may help. One study found that people with OSA who had surgery for their sleep apnea had a 29% lower risk of developing glaucoma [3]. While more research is needed on the effects of CPAP therapy, the current evidence is strong enough that experts recommend clinicians pay special attention to OSA patients and consider earlier or more aggressive glaucoma treatment [2]. If you have risk factors for either condition—such as loud snoring, daytime sleepiness, high blood pressure, or a family history of glaucoma—talk to your doctor about getting screened for both.

About These Sources

This answer is built on 10 peer-reviewed studies — published from 2020 to 2025, 3 from 2024 or later, 3 in Q1 journals — selected as the most relevant from 14 studies that passed quality screening, drawn from 41 papers retrieved from a database of over 500 million.

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