Glare in Vision: Managing and Reducing Its Impact

Cataracts are one of the most common causes of glare, especially in people over fifty. A cataract is a clouding of your natural lens. As the lens becomes cloudier, light scatters inside your eye, creating glare and halos around lights.

• Colors may appear faded or yellowed
• Reading requires more light than before
• Night driving becomes increasingly difficult
• Vision may seem foggy or hazy

When your eyes do not produce enough tears or the tears evaporate too quickly, your eye surface becomes dry and uneven. This rough surface scatters light, which can cause glare and blurred vision. Dry eyes often feel scratchy, tired, or irritated. Many patients find that their glare symptoms worsen as the day progresses or after extended screen time.

Conditions like keratoconus, where the cornea becomes cone-shaped, or corneal scars from injury can create an uneven eye surface. Light does not focus smoothly, leading to glare, halos, and blurred or distorted vision. For patients with corneal irregularities, specialty rigid contact lenses such as scleral lenses provide the most reliable glare reduction. Corneal cross-linking may be recommended to stabilize the cornea and prevent progression.

Nearsightedness, farsightedness, and astigmatism can all contribute to glare. Astigmatism particularly can make halos and starbursts more noticeable because light focuses unevenly across the cornea. An updated eyeglass or contact lens prescription often reduces these symptoms significantly.

Sudden halos around lights combined with eye pain, redness, and blurred vision can signal acute angle-closure glaucoma, which is a medical emergency. The halos occur because high pressure causes swelling of the cornea, which scatters light. If you experience this combination of symptoms, seek immediate care.

Some patients experience glare after eye surgery, including cataract surgery, LASIK, or corneal cross-linking. After cataract surgery, temporary glare and halos are common during healing and usually improve within weeks to months.

• Some multifocal or extended depth of focus intraocular lenses can cause halos in certain lighting
• Posterior capsule opacification can develop months or years after surgery and cause recurrent glare
• LASIK may temporarily cause glare during early healing, typically improving over weeks to months
• LASIK is not appropriate for patients with irregular corneas such as keratoconus

You struggle to see clearly when oncoming headlights appear or when driving past streetlights. You might experience excessive squinting, watering eyes, or a sense that your vision suddenly becomes much worse at night compared to daytime driving.

You find yourself squinting more than seems normal in bright sunlight or reflective environments. This squinting does not fully resolve your vision problems and may actually make your eyes more tired. The constant effort to see clearly can lead to headaches and eye fatigue.

Your vision clarity changes depending on the lighting conditions. You see well indoors under soft lighting but experience blurriness or haziness in bright outdoor conditions or under fluorescent lights. This variability often indicates an underlying eye condition rather than simply light sensitivity.

You have trouble distinguishing objects or reading signs that other people see easily, especially when glare is present. The glare seems to wash out or fade the contrast between objects and their background. This can make activities like reading street signs, navigating stairs, or recognizing faces more challenging.

Drive during daylight when possible. If you must drive at night, increase your following distance from other vehicles and avoid looking directly at oncoming headlights. Keep your windshield and headlights clean, as dirt and film can increase glare.

• Consider driving through less brightly lit routes when possible
• Keep a pair of night driving glasses in your vehicle
• Ensure dashboard lights are not too bright
• Schedule important night drives when you are well rested

Use softer, indirect lighting instead of bright overhead fluorescent lights. Position your desk or reading area so that windows do not create direct glare on your work surface. Use window blinds or curtains to control natural light intensity. These simple changes can reduce eye strain throughout your day.

Position your computer screen at a slight downward angle and away from bright windows or overhead lights. Use a screen protector if needed. Take regular breaks from screen time, following the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. This gives your eyes a chance to rest and reduce fatigue.

Wear sunglasses whenever you are outside on sunny days. Be especially careful near water, snow, or other reflective surfaces, where glare intensity increases. Consider wearing a hat with a brim to provide additional shade and reduce glare from above. These protective measures are important even on cloudy days, as UV rays pass through clouds.

Use artificial tears regularly, especially if you spend time in bright conditions. Well-lubricated eyes handle glare better than dry eyes.

• Stay hydrated by drinking plenty of water throughout the day
• Use a humidifier in dry indoor environments
• Avoid directing air vents toward your face
• Take breaks from activities that reduce blinking

UV radiation from the sun can damage your lens, cornea, and retina over time, increasing your risk of cataracts and other conditions that cause glare. Always wear sunglasses that block 100 percent of UVA and UVB rays when you are outside. Wear a hat for additional protection.

Corneal scars from injury can cause permanent glare. Wear safety glasses when appropriate during work, sports, or yard work. Always follow safety guidelines to prevent eye trauma. Even minor injuries can lead to scarring that affects vision quality.

Our eye doctors recommend comprehensive eye exams at least every one to two years for adults. Regular exams allow us to catch conditions like cataracts and glaucoma early, before they cause significant glare or vision loss. Early treatment often prevents or minimizes glare symptoms and preserves long-term vision health.