Educational Guides

Easy-to-read guides covering common conditions and treatment options

Age-related macular degeneration

Macular degeneration is an age-related eye condition that most commonly affects people over the age of 50. It impacts the macula, the central part of the retina responsible for sharp, detailed vision used for activities like reading and recognizing faces. 

Types of macular degeneration

There are two kinds of macular degeneration:

Dry macular degeneration

This is the most common and less severe form. It develops gradually as the macula shows age-related changes within its layers. While there is no direct treatment to reverse dry macular degeneration, it is typically managed through:

  • Regular eye exams to monitor changes
  • Daily use of a multivitamin or AREDS-formula vitamin

The AREDS study found that long-term use of these vitamins may help slow progression from the dry form to the more severe wet form.

Wet macular degeneration

The wet form is less common but more damaging to vision. It occurs when abnormal blood vessels grow beneath the macula. These vessels can leak fluid or bleed, leading to distorted vision or a central blind spot. Treatment options may include:

  • Injections of medication into the eye to reduce fluid and stop abnormal vessel growth
  • Laser treatment in select cases

Ongoing care and prevention

Patients with macular degeneration should have yearly eye exams to monitor their condition. Additional recommendations include wearing sunglasses to protect against UV exposure and avoiding smoking, which can increase the risk of progression.

Blepharitis is a common condition that causes inflammation of the eyelids. It may also affect the membrane lining the inside of the eyelid and the white part of the eye. This condition is often caused by bacteria on the eyelids or surrounding skin and can also be linked to dandruff or oily skin. While blepharitis cannot always be cured, it can usually be controlled with proper care.

Common symptoms

Blepharitis is characterized by:

  • Red, swollen, or tender eyelids
  • Itching around the eyelashes
  • Scales or crusts at the base of the lashes
  • Flakes that may build up overnight, making it difficult to open your eyes in the morning

If left untreated, blepharitis can lead to complications such as styes or cysts on the eyelid.

Managing blepharitis

Daily self-care plays an important role in controlling symptoms. Recommended steps include:

  • Applying warm compresses to the eyelids two or more times a day
  • Gently cleaning the eyelids with lid scrubs or diluted baby shampoo and water

If inflammation is more severe, your eye doctor may prescribe medicated eye drops or ointments to relieve symptoms. Even when medication is used, continuing warm compresses and eyelid hygiene is important for long-term control.

Tips to help prevent flare-ups

With consistent care and guidance from your eye doctor, blepharitis symptoms can often be managed effectively. Make sure to:

  • Wash your hands thoroughly before touching your eyes.
  • Wash your hair regularly.
  • Keep contact lenses and lens solutions clean.
  • Replace eye makeup regularly and avoid sharing it.

Your eyes work like a camera. Light enters through the cornea, passes through the lens, and is focused onto the retina. The retina then sends signals to the brain, which turn those signals into the images you see. Clear vision depends on every part of this process working together, especially the lens.

But as we age, the natural lens inside the eye can gradually become cloudy. This clouding is called a cataract and is a normal part of aging, much like getting gray hair. Over time, a cataract can become dense enough to block light from reaching the retina, leading to blurred or impaired vision. Unfortunately, there is no way to prevent cataracts from forming.

Common symptoms

People with cataracts often experience:

  • Blurry or cloudy vision
  • Fading or dulling of colors
  • Increased glare or halos around lights, especially at night
How cataracts are treated

The only effective treatment for cataracts is surgery. During cataract surgery, the cloudy natural lens is removed and replaced with a clear artificial lens, known as an intraocular lens (IOL). This procedure can restore clearer vision and significantly improve one’s quality of life.

Cataract surgery is one of the safest and most successful procedures performed today. The surgery involves making a very small incision in the eye and using a specialized instrument to gently break up and remove the cloudy lens. The new IOL is then inserted through the same tiny opening and positioned securely inside the eye.

Many patients are pleasantly surprised by how quick and straightforward the procedure is. Cataract surgery typically takes about 15 minutes, and most people return to normal activities the following day. Thanks to advances in lens technology, some patients may qualify for premium lenses that reduce the need for glasses at multiple distances. Your doctor will discuss whether these options are right for you.

Conjunctivitis is an irritation or infection of the conjunctiva, the thin membrane that covers the white of the eye and lines the inside of the eyelid. It can affect one or both eyes. When the conjunctiva becomes inflamed, the blood vessels swell and become more visible, causing redness. This is why conjunctivitis is commonly known as “pink eye.”

Common symptoms

Persons with conjunctivitis typically experience the following symptoms:

  • Redness in or around the eye
  • Swelling or soreness of the eyelids
  • Itching, burning, or stinging sensations
  • Watery eyes or eye discharge
  • Crusting of the eyelids, especially after sleep

If you experience any of these symptoms, it’s important to see an eye doctor. Early evaluation and treatment can help prevent complications and protect your eye health.

Although conjunctivitis is usually not serious, its symptoms can resemble those of more serious eye conditions, making an accurate diagnosis from an eye doctor essential.

Causes and treatment

Conjunctivitis can be caused by allergies, irritants, viruses, or bacteria. Allergic conjunctivitis may recur and is typically managed by relieving symptoms and avoiding triggers. Viral or bacterial conjunctivitis is contagious and requires careful hygiene. Treatment may include prescription eye drops and guidance on limiting contact with others until the infection clears. Left untreated, infectious conjunctivitis can lead to more serious problems.

How to help prevent conjunctivitis

Conjunctivitis is highly preventable if you:

  • Avoid touching or rubbing your eyes.
  • Wash your hands frequently with soap and water.
  • Never share eye medications, cosmetics, or towels.
  • Use disposable tissues instead of handkerchiefs.
  • Wash towels, pillowcases, and bedding in hot water.

With proper care and timely treatment, conjunctivitis can usually be managed effectively and resolved without long-term issues.

For your eyes to feel comfortable, they need a healthy layer of tears to keep the surface moist and protected. When your eyes don’t produce enough tears, or when tears evaporate too quickly, you may experience symptoms such as stinging, burning, scratchiness, or even excessive watering. Ironically, watery eyes can be a sign of dryness caused by reflex tearing.

Each time you blink, tears spread across the surface of your eyes to keep them lubricated. But without adequate tear coverage, the eyes can become irritated, dry, and uncomfortable.

Common causes of dry eyes

Dry eyes can be caused by several things, including:

  • Heating and air conditioning
  • Wind, smoke, and dry weather
  • Allergies
  • Certain medications
  • Eyelid conditions
  • Hormonal changes, including menopause
  • Medical conditions such as rheumatoid arthritis
Treatment options for dry eye

Many patients find relief with artificial tears or lubricating eye drops that help replace natural tears. In some cases, prescription eye drops may be recommended to increase tear production. For more persistent symptoms, your doctor may suggest punctal plugs, which work like a small stopper to slow tear drainage and keep the eye surface lubricated longer.

Tips to improve comfort at home

If you have dry eyes, try the following to alleviate your condition:

  • Use a humidifier in heated or air-conditioned rooms.
  • Wear wraparound sunglasses outdoors to reduce wind exposure.
  • Limit contact lens wear when possible.
  • Avoid smoke, hair dryers, aerosols, and direct air vents.

A regular eye exam allows your doctor to evaluate your tear film and determine whether dry eye treatment is needed. With the right care, dry eye symptoms can often be managed effectively and comfortably.

Flashes may appear as brief streaks or sparks of light that don’t actually exist in your surroundings. They are often caused by the vitreous, the gel-like substance inside your eye, pulling on the retina.

Floaters can look like small dark specks, clouds, or cobweb-like shapes drifting across your vision. These are usually tiny pieces of vitreous gel or other materials floating inside the eye. In most cases, floaters are harmless.

As you age, flashes and floaters become more common. They are also more likely to occur if you are nearsighted or have had an eye injury or eye surgery. Seeing an occasional flash or a few floaters is often normal and does not usually require treatment.

When to see your eye doctor

You should contact your eye doctor promptly if you notice:

  • A sudden appearance of flashes or floaters when you haven’t experienced them before
  • A rapid increase in the number of floaters
  • Floaters that begin to interfere with reading, driving, or daily activities

If flashes appear suddenly or increase significantly, especially when followed by a noticeable rise in floaters that do not improve, this may signal a more serious issue. These symptoms can sometimes indicate a retinal tear or retinal detachment, which requires immediate medical attention.

Your eye doctor can examine your eyes, determine the cause of your symptoms, and recommend appropriate treatment if needed. Early evaluation is key to protecting your vision.

Glaucoma is a serious eye disease that can lead to permanent vision loss or blindness if left untreated. When detected early, however, glaucoma can often be managed successfully. Because glaucoma frequently develops without noticeable symptoms, regular eye exams are essential for early detection.

Glaucoma occurs when pressure builds up inside the eye and damages the optic nerve, which is responsible for sending visual information from the eye to the brain. The eye constantly produces fluid that normally drains through small channels. If too much fluid is produced or the drainage system does not work properly, pressure can increase and harm the optic nerve, leading to vision loss.

Anyone can develop glaucoma, but certain factors increase the risk, including:

  • A family history of glaucoma
  • Increasing age
  • African ancestry
  • Previous eye injuries or eye surgery
Types of glaucoma

There are two main types of glaucoma:

Open-angle glaucoma
This is the most common form and usually develops slowly over time. As eye pressure increases, it can cause a gradual loss of peripheral (side) vision. Because the changes happen so slowly, many people do not realize their vision is being affected until significant damage has occurred.

Angle-closure glaucoma
This less common form can develop suddenly when the eye’s drainage channels become blocked. Pressure rises quickly and may cause symptoms such as blurred vision, halos or rainbow rings around lights, severe eye pain, headaches, nausea, or vomiting. Angle-closure glaucoma is a medical emergency and requires immediate treatment to prevent permanent vision loss.

Treatment and management

While glaucoma cannot be cured, treatment can help prevent or slow further vision loss. The primary goal of treatment is to lower eye pressure. Prescription eye drops are often the first line of treatment. If eye drops are not effective, additional options such as laser treatment or surgery may be recommended to improve fluid drainage.

If you are prescribed glaucoma medication, it’s important to use it exactly as directed, even if you do not notice symptoms. Regular follow-up exams are the only way to determine whether treatment is working and to protect your vision over time.

The cornea is the clear, front surface of your eye. It works like a window, helping focus light so images appear sharp and clear. When the cornea or the shape of the eye prevents light from focusing properly on the retina, vision becomes blurry. This is known as a refractive error.

Common types of refractive errors
  • Myopia (nearsightedness): Objects up close appear clear, while distant objects look blurry.
  • Hyperopia (farsightedness): Distant objects may appear clear, but close-up tasks like reading can be difficult.
  • Presbyopia: This is an age-related condition that makes it harder to focus on nearby objects, usually becoming noticeable after age 40.
  • Astigmatism: An irregularly shaped cornea or lens causes blurred or distorted vision.
Treatment options

Refractive errors are commonly corrected with glasses or contact lenses. In some cases, laser vision correction may also be an option. Your eye doctor can help determine the best solution based on your vision needs and eye health.

The retina is the light-sensitive layer that lines the inside of the eye. It captures light and sends signals to the brain, allowing you to see. When part of the retina tears or pulls away from the back of the eye, it cannot function properly, which can lead to partial or permanent vision loss if not treated promptly.

Retinal tears and detachments can occur as part of the natural aging process, after an eye injury, or as a result of another eye condition.

Symptoms of a retinal tear may include:

  • Sudden flashes of light
  • New or increased floaters
  • Sudden blurry vision

Symptoms of a retinal detachment may include:

  • Flashes of light
  • A sudden increase in floaters
  • Blurred or distorted vision
  • A dark shadow or curtain-like effect moving across the field of vision
Why prompt care matters

Retinal tears and detachments are medical emergencies. Early diagnosis and treatment are critical to preventing permanent vision loss. Your eye doctor can diagnose these conditions through a dilated eye exam and recommend the appropriate course of treatment.

Treatment options

Retinal tears are often treated with laser therapy or freezing treatment (cryotherapy) to seal the tear and prevent progression. Retinal detachments typically require more advanced treatment, which may be performed in the office or at a surgical center. Treatment focuses on sealing the tear and relieving traction on the retina. This may involve removing the vitreous gel, placing a temporary gas bubble inside the eye, or applying a flexible band around the eye to help hold the retina in place while it heals.