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Types of Cataracts

How Cataracts Form Inside the Eye

Nuclear Sclerotic Cataracts

Nuclear sclerotic cataracts are the most common form of age-related cataract, forming in the nucleus, or center, of the lens. They develop gradually, often over many years, and are detected during a slit-lamp examination (a magnified eye exam using a bright light source). Because they progress slowly, many people are able to manage early symptoms with an updated glasses prescription before surgery becomes necessary.

As the nucleus ages and hardens, it shifts in color from clear to yellow and eventually to brown in advanced cases. This yellowing affects how you perceive colors and reduces contrast, making it harder to distinguish between shades that appear similar. The change is often so gradual that many patients do not notice it until after surgery restores their color vision.

Nuclear cataracts tend to impair distance vision more than near vision in the early stages. As the lens hardens, its focusing power can temporarily increase, producing what is sometimes called 'second sight,' a brief period where near vision seems to improve on its own. This effect is temporary and reverses as the cataract continues to progress. You may also notice that your vision is worse in low-light conditions and that colors appear faded or washed out.

Because nuclear cataracts progress slowly, there is often time to plan surgery around your schedule and lifestyle. Our Cataract Surgeons recommend surgery when your vision affects tasks that are important to you, such as driving safely, reading comfortably, or enjoying hobbies. The timing is based on your vision and quality of life, not on the cataract type alone.

Cortical Cataracts

Cortical cataracts form in the cortex, the layer of fibers that surrounds the nucleus of the lens. They are closely associated with UV-B light exposure and diabetes, which is why protecting your eyes from the sun and managing blood sugar are important steps in overall eye health. A dilated eye exam can reveal cortical cataracts long before they affect your central vision.

Cortical cataracts appear as wedge-shaped or spoke-like white opacities that start at the outer edge of the lens and extend inward toward the center. Our Cataract Surgeons can identify these spoke patterns during a routine dilated exam. As the spokes grow toward the central visual axis, they begin to scatter and block light more noticeably.

The most distinctive symptom of a cortical cataract is glare, particularly from oncoming headlights while driving at night. Light scatters as it passes through the spoke-shaped opacities, creating halos and streaks around light sources. Color perception may also fade gradually, though most patients do not notice this change until their vision is restored after surgery.

Cortical cataracts progress at unpredictable rates. Some remain at the periphery of the lens for years without interfering with central vision, while others can advance more quickly. Anti-glare coatings on glasses may offer temporary relief from nighttime glare in the early stages. Our Cataract Surgeons monitor the progression at each visit and discuss surgery when the opacities begin to affect your daily function and safety.

Posterior Subcapsular Cataracts

Posterior subcapsular cataracts (PSC) form on the back surface of the lens, directly in the central path of incoming light. Even a small opacity in this location can cause noticeable vision problems because light passes right through it on its way to the retina. PSC cataracts tend to progress faster than other types and can affect people at younger ages than typical age-related cataracts.

Under a slit-lamp examination, a PSC cataract appears as a granular or plaque-like opacity on the rear inner surface of the lens capsule. Because of its central location, even a small PSC can have an outsized effect on vision. Long-term use of corticosteroid medications (such as oral prednisone, inhaled steroids for asthma, or topical steroid eye drops) is a well-established cause of PSC cataracts.

Unlike nuclear cataracts, PSC cataracts tend to impair near vision more than distance vision, making reading and close-up tasks difficult. Bright light causes significant glare because it focuses directly through the opacity. Many patients notice their vision is worse outdoors in sunlight than in dim indoor lighting, which is the opposite of what patients with nuclear cataracts typically experience. Diabetes, radiation exposure, and a history of eye injury or surgery also raise the risk of PSC cataract development.

PSC cataracts can progress from mild to visually significant in a matter of months rather than years. Because of their rapid progression and the significant impact on reading and bright-light activities, our Cataract Surgeons often recommend surgery sooner than they would for nuclear or cortical cataracts. If you use corticosteroids regularly for conditions such as asthma, rheumatoid arthritis, or inflammatory bowel disease, routine monitoring for PSC is an important part of your eye care.

Other Types of Cataracts

While nuclear, cortical, and PSC cataracts account for the majority of cases, cataracts can also develop as a result of injury, systemic disease, or other eye conditions. These less common types often require specialized evaluation and may present unique challenges during surgery. Identifying the underlying cause helps our Cataract Surgeons plan the most effective approach for each patient.

Congenital cataracts are present at birth or develop shortly afterward, and they can result from genetic mutations, chromosomal conditions, metabolic diseases such as galactosemia, or infections during pregnancy. Early detection through newborn screening and prompt treatment are critical, because untreated cataracts in infancy can lead to amblyopia (commonly called lazy eye), a condition in which the brain does not fully develop the visual pathway for that eye. Pediatric cataract care requires a specialized surgical approach and close follow-up rehabilitation.

Traumatic cataracts can develop after blunt or penetrating eye injury, electric shock, chemical burns, or radiation exposure. A cataract may appear immediately after an injury or develop years later, depending on the extent of the damage to the lens capsule. Blunt trauma often produces a characteristic rosette or petal-shaped opacity that is visible during examination. Surgery for traumatic cataracts may involve additional considerations such as capsular damage or weakened zonules (the fibers that hold the lens in place), which our Cataract Surgeons assess carefully before planning the procedure.

Secondary cataracts develop as a complication of another eye condition or medical treatment. Chronic uveitis (inflammation inside the eye), long-term corticosteroid use, and radiation therapy to the head or neck can all cause lens clouding. Our Cataract Surgeons identify and address the underlying cause when planning treatment. It is worth noting that the term 'secondary cataract' is also sometimes used informally to describe posterior capsule opacification (PCO), a separate condition that can occur after cataract surgery and is treated with a quick outpatient laser procedure.

Frequently Asked Questions

These answers address common questions patients have after learning about their cataract type, with practical guidance on what to expect and when to seek care.

Yes, and this is actually quite common. Many cataracts involve a mix of types, with one dominant pattern driving the most noticeable symptoms. For example, someone may have both a nuclear cataract and a cortical cataract developing at the same time. Surgery removes the entire clouded lens in a single procedure regardless of how many types are present, so having a mixed cataract does not typically complicate the overall treatment plan.

It can influence the timing. PSC cataracts, for instance, often warrant earlier surgery because they progress quickly and have a disproportionate impact on reading and bright-light activities. Nuclear cataracts, on the other hand, may allow years of management with updated glasses before surgery becomes necessary. Ultimately, the decision is based on how much your vision is affecting your daily life, not on the cataract classification alone. Your Cataract Surgeon will guide you through that decision at the right time.

They can offer partial relief for some symptoms. Anti-reflective coatings may reduce glare from headlights if you have cortical cataracts, and an updated prescription can temporarily sharpen vision in the early stages of a nuclear cataract. These options are a short-term bridge, not a long-term solution. Once the cataract is advanced enough to limit your daily activities, surgery is the only effective step forward.

The type of cataract itself does not determine your IOL choice, but the overall health of your eye, including your cornea, retina, and the condition of the lens capsule, does factor into the decision. Patients with certain types of damage (such as a compromised capsule from a traumatic cataract) may have a more limited selection of implants. Your Cataract Surgeon will evaluate all of these factors and walk you through your IOL options, which may include standard lenses or premium lifestyle lenses designed to reduce your dependence on glasses after surgery.

Posterior capsule opacification (PCO) is not a returning cataract. It occurs when residual lens cells grow on the back of the capsule (the thin membrane left in place to support your IOL) after cataract surgery, causing blurry or hazy vision months to years later. Treatment is simple and performed in the office: a brief, painless laser procedure called a YAG laser capsulotomy clears the clouding in just a few minutes with no recovery time needed. True cataracts cannot regrow once the natural lens has been removed.

The recommended frequency depends on how quickly your cataract is progressing and whether it is affecting your vision. In general, annual dilated eye exams are standard for monitoring early cataracts, but your Cataract Surgeon may recommend more frequent visits if your cataract is advancing rapidly or if you have risk factors such as corticosteroid use or diabetes. If you notice a sudden or significant change in your vision between scheduled visits, you should contact your eye care provider promptly rather than waiting for your next appointment.

See Our Cataract Surgeons at NewView Eye Center

If you have been told you may have a cataract, or if you have noticed changes in your vision, we encourage you to schedule a comprehensive dilated eye exam with our team. NewView Eye Center brings together advanced diagnostic technology and personalized surgical care to help patients across Northern Virginia see more clearly at every stage of life. We are here to answer your questions, explain your options, and support you from your first exam through your full recovery.

What our Patients Says

Dr. Griffiths was communicative, explained her thoughts plainly, listened to my symptoms and took a thorough note. She gave comprehensive tests and has been quick to follow up with more where needed.

Michelle Franz

Tomorrow is my second cataract surgery, and I’m actually looking forward to it. Dr. Callahan is professional, thorough, answers every question, and her kind, caring staff makes all the difference.

Pam Knisely

The office staff is friendly and knowledgeable. Dr. Griffiths is kind and professional, and she effectively helped with my eye problem. Highly recommend her care.

Nancy Halsey

I highly recommend Dr. Griffiths. Thorough, professional, and reassuring, her cataract surgery exceeded my expectations. Staff is welcoming, and I can’t wait for my second eye procedure.

Victoria Johnson

I needed general anesthesia for cataract surgery, and other providers couldn’t help. Dr. Callahan got it approved. After my first surgery, I have 20/20 vision! Amazing results—she’s worth the wait!

Therese Silvent

I have been with Dr Griffiths for 20+ years. Both my husband and I had cataract operations there. Highly competent physician.

Virginia

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