You may be able to drive at night with glaucoma, but it depends on the severity, and many people find it difficult or unsafe due to glare, poor night vision, and loss of peripheral vision, requiring them to stop night driving, especially with advanced disease; always consult your eye doctor and driver licensing authority for personalized advice and restrictions.
People with glaucoma report that they have difficulty with glare, night driving, and low-contrast situations.
You should only ever drive if you feel safe to do so even if you have been told you meet the driving requirements. If you have Glaucoma and a consultant tells you you are no longer safe to drive, you must stop driving and inform the DVLA.
Studies have shown that peak IOP occurs at night or in the early morning hours in two-thirds of glaucoma patients. IOP has been shown to increase by 3 to 4mm Hg when a patient is lying flat face upward.
Acute angle-closure glaucoma
Severe eye pain. Nausea or vomiting. Blurred vision. Halos or colored rings around lights.
3 Subtle Signs Your Glaucoma May Be Getting Worse
Early signs of an eye stroke (retinal artery occlusion or ischemic optic neuropathy) typically involve sudden, painless vision loss or changes, most often in only one eye, including blurred vision, blind spots, floaters, or a dark shadow covering part of your sight. It often happens upon waking and is a medical emergency requiring immediate attention to potentially save sight and identify a risk for a full stroke.
Heavy caffeine intake should be advised against due to its transient elevations in IOP, especially in genetically predisposed patients or those with a positive family history of glaucoma. Chronic alcohol consumption can lead to many systemic complications and increased risk of glaucoma.
What does high eye pressure feel like? High eye pressure, also known as ocular hypertension, often doesn't cause noticeable symptoms. However, some individuals may experience symptoms such as mild eye discomfort, headaches, or changes in vision.
When asleep, blood pressure (BP) naturally decreases in most cases, yet intraocular pressure increases. These imbalances have been linked to the progression of glaucoma. Further, vascular dysregulation (disrupted blood flow) has been attributed to glaucoma progression, despite normal intraocular pressure.
Eye fatigue – At night or in the early morning, we might be more likely to suffer from eye strain or ocular fatigue (scientifically referred to as Asthenopia). Straining to see in dark or dim surroundings, exposure to bright lights or glare, and other factors could cause asthenopia.
“Strict adherence to medication is the single most important thing a patient with glaucoma can do to keep their vision from worsening,” Yohannan says.
Seniors (70+ years old): The normal eye pressure for 70 year olds and beyond may still fall within the 10 to 21 mmHg range, but it's closely monitored for any increases, as they are more susceptible to eye conditions like glaucoma.
The visual field test is most likely to trip up patients with glaucoma, as it tests for peripheral vision. If a patient fails the visual field test, their eye doctor may recommend certain restrictions, such as daylight driving only, driving only below a certain speed, or driving only in a set radius around their home.
Night blindness (nyctalopia)
Like presbyopia and myopia, night blindness can pose a dangerous threat to driving at night because it limits the visual capabilities of an affected driver. This disorder can be caused by cataracts, glaucoma, myopia and other vision conditions.
True night blindness is more often associated with certain retinal conditions (like retinitis pigmentosa) or severe vitamin A deficiency. However, glaucoma can create a similar feeling for patients by significantly worsening their night vision.
Left untreated, it generally takes glaucoma an average of 10-15 years before causing severe vision loss or blindness. Since glaucoma is widely considered a slow-progressing disease, it usually takes a while before symptoms develop and even longer for them to grow worse.
Pressure readings are taken at home with a small device that positions over the eye by resting on the bones above and below the eye. A tip at the end of the device gently contacts the eye to take the eye pressure reading.
If the pressure in your eye is over 21mmHg then you may be told you have raised pressure. If it less than 30mmHg you may not be advised to have treatment, as long as everything else is healthy with your eyes and your general health.
You might be concerned about the impact all this screen time has on your eyesight, particularly if you have a diagnosed disease like glaucoma or dry eye disease (DED). Fortunately, neither condition should stop you from enjoying any screen-based activity.
The rule of 5 is a simple rule for detecting retinal nerve fiber layer (RNFL) change on spectral-domain OCT (SD-OCT), in which a loss of 5 μm of global RNFL on a follow-up test is considered evidence of significant change when compared with the baseline.
A newer, innovative glaucoma treatment option is selective laser trabeculoplasty (SLT). With this procedure, your eye doctor applies laser energy to the tissue inside your eye, stimulating the affected tissue to increase the natural drainage process.
Other signs and symptoms may include:
Visual symptoms from a stroke can take a few weeks to develop. However, a neuro-optometrist may be able to detect visual problems, even before any symptoms appear.
Your eyes need healthy blood circulation and oxygen to fuel good vision. Exercise—anything that gets your heart rate up and the blood pumping from a brisk walk to a run or a Zumba class—benefits your eyes because it promotes good circulation.