Eye Conditions · Brooklyn, NY

Common Eye Conditions — Plain English

From age-related near-vision loss to the silent early stages of glaucoma, our optometrists in Brooklyn help patients understand what's happening with their eyes — and what to do about it. Below is a plain-English guide to the six conditions we see most often.

Presbyopia

Presbyopia is the gradual loss of your eye's ability to focus on nearby objects — a natural part of aging that typically becomes noticeable in your early-to-mid 40s. The lens inside your eye slowly stiffens over time, making it harder to switch focus between near and far distances. You might find yourself holding a menu at arm's length, enlarging the text on your phone, or struggling under dim restaurant lighting.

The good news is that presbyopia is entirely normal and very manageable. Reading glasses are the simplest solution for mild cases. Progressive lenses — which blend multiple prescriptions into a single lens without a visible line — are a popular choice for people who already wear glasses for distance. Multifocal contact lenses are another option if you prefer not to wear frames. Your optometrist will recommend the approach that fits your lifestyle best.

Cataracts

A cataract is a clouding of the naturally clear lens inside your eye. Light that enters your eye must pass through the lens to reach the retina, and when the lens turns cloudy, vision becomes blurred, washed out, or dim. Cataracts develop slowly — most people don't notice them at first — and are by far the most common cause of vision loss in adults over 40.

Early signs include slightly blurry or hazy vision, increased sensitivity to glare (especially from headlights at night), colors that look faded or yellowed, and the need for brighter light to read. Because cataracts progress gradually, many people assume the changes are just normal aging.

Routine eye exams allow your doctor to detect cataracts early and monitor their development. In the early stages, updated glasses or better lighting may be enough. When cataracts significantly interfere with daily life, surgical treatment — which replaces the cloudy lens with a clear artificial one — is highly effective. Early detection means you stay informed and can plan ahead.

Glaucoma

Glaucoma is a group of eye diseases that damage the optic nerve, which carries visual information from your eye to your brain. The most common form is linked to elevated pressure inside the eye, though glaucoma can also occur with normal eye pressure. What makes glaucoma particularly dangerous is that it typically causes no pain and no noticeable symptoms in its early stages — by the time vision loss is noticed, significant and irreversible damage may already have occurred.

The peripheral (side) vision is usually affected first, which is easy to overlook because your central vision remains sharp. Over time, if untreated, glaucoma can progressively narrow your visual field and eventually lead to blindness. Risk factors include age (especially over 60), a family history of glaucoma, elevated intraocular pressure, and certain medical conditions like diabetes.

The only reliable way to detect glaucoma early is through a comprehensive dilated eye exam, which allows your doctor to examine the optic nerve directly and measure eye pressure. Caught early, glaucoma can be managed with medicated eye drops, laser treatment, or surgery to slow or halt progression.

Astigmatism

Astigmatism occurs when the cornea (the clear front surface of the eye) or the lens inside the eye has an irregular curve — more like a football than a perfectly round basketball. This uneven shape prevents light from focusing sharply on the retina, causing blurry or distorted vision at all distances, not just near or far.

Astigmatism is extremely common. Many people have at least a mild degree of it and may not even realize it until they get their first eye exam. Symptoms can include blurry or distorted vision, eyestrain after reading or screen use, headaches, and difficulty seeing clearly at night. Astigmatism often coexists with nearsightedness or farsightedness.

The condition is fully correctable. Standard eyeglass lenses can be ground with a cylindrical correction to compensate for the irregular curvature. For contact lens wearers, toric contact lenses are specifically designed to correct astigmatism and stay properly oriented on the eye. With the right prescription, most people with astigmatism achieve clear, comfortable vision.

Farsightedness (Hyperopia)

Farsightedness, or hyperopia, means the eye is slightly shorter than ideal or the cornea has too little curvature, causing light to focus behind the retina rather than on it. The result is that close objects appear blurry — though in mild cases, particularly in younger people, the eye's focusing muscles can compensate and maintain clear vision at both distances for a while.

Common symptoms include difficulty reading or doing close work, eyestrain or fatigue after near tasks, headaches (especially in the afternoon after extended screen or book time), and the sensation that your eyes are tired or aching. Children with undetected farsightedness may squint, rub their eyes frequently, or lose interest in reading — not because they dislike it, but because it genuinely hurts.

Farsightedness is correctable with eyeglasses or contact lenses that add focusing power to the eye. Children should be screened early, as significant undetected hyperopia can contribute to amblyopia (lazy eye) or misalignment. A comprehensive exam is the only way to accurately measure the degree of farsightedness and determine the right correction.

Nearsightedness (Myopia)

Nearsightedness, or myopia, is the most common refractive error in the world. The eye is slightly longer than normal, or the cornea is too curved, causing light to focus in front of the retina instead of on it. The result is that distant objects appear blurry while close objects remain clear. Children with myopia often sit close to the TV or the front of the classroom, squint to read the whiteboard, or report that they can't see the board.

Myopia typically develops during childhood and progresses through the teenage years, then stabilizes in most people in their early 20s. Beyond the inconvenience of blurry distance vision, higher degrees of myopia are associated with an increased lifetime risk of certain eye conditions including retinal detachment and glaucoma.

Standard glasses and contact lenses correct myopic blur effectively. For children whose myopia is progressing rapidly, there are specialty options — including orthokeratology (nighttime reshaping lenses), soft multifocal contact lenses, and low-dose atropine drops — that have been shown to slow the progression of myopia. Regular exams are essential for children so that any acceleration in prescription change can be detected and addressed promptly.

Dry Eye Disease

Dry eye disease occurs when your eyes don't produce enough tears, or when the tears evaporate too quickly. The tear film that coats your eyes is made of three layers — oil, water, and mucus — and when any layer is disrupted, the eye surface becomes irritated and inflamed.

Symptoms include a burning or stinging sensation, redness, intermittent blurry vision, a gritty feeling as if something is in your eye, and paradoxically, excessive watering (the eye's reflex response to dryness). Dry eye is among the most common conditions we treat, and it tends to worsen with screen use, air conditioning, contact lens wear, and as we age.

Treatment depends on the underlying cause. Artificial tears are a first-line option. For more persistent dry eye, prescription eye drops such as Restasis or Xiidra reduce inflammation and increase natural tear production. Punctal plugs, omega-3 supplementation, warm compresses, and lid hygiene routines are additional tools. A comprehensive evaluation allows us to identify the type and severity of dry eye and recommend the most effective approach.

Eye Allergies

Ocular allergies — also called allergic conjunctivitis — occur when the immune system reacts to airborne allergens such as pollen, dust mites, pet dander, or mold. The conjunctiva, the thin membrane covering the white of the eye and the inside of the eyelids, becomes inflamed, leading to characteristic symptoms of itching, redness, tearing, and swelling.

Seasonal allergies peak in spring and fall when pollen counts are high, while perennial allergies persist year-round due to indoor allergens. Unlike infectious conjunctivitis (pink eye), allergic conjunctivitis is not contagious and typically affects both eyes simultaneously.

Treatment includes avoiding triggers where possible, cold compresses for comfort, and over-the-counter antihistamine eye drops for mild cases. Prescription antihistamine and mast-cell-stabilizing drops are more effective for moderate to severe symptoms. In some cases, short-term steroid eye drops may be appropriate. Distinguishing allergic from infectious conjunctivitis requires an examination — treatment differs significantly between the two.

Retinal Disease

The retina is the light-sensitive tissue lining the back of the eye. It converts light into nerve signals that travel to the brain, where they become the images you see. Diseases affecting the retina can range from age-related macular degeneration (AMD) to diabetic retinopathy, retinal detachment, and inherited retinal dystrophies.

Age-related macular degeneration affects the central part of the retina (the macula), leading to gradual loss of sharp central vision — the vision you use for reading, recognizing faces, and driving. Diabetic retinopathy develops when elevated blood sugar damages the tiny blood vessels supplying the retina, and is a leading cause of blindness in working-age adults. Many retinal conditions progress silently before causing noticeable symptoms.

Early detection through comprehensive dilated eye exams is the cornerstone of preserving vision. Your doctor examines the retina directly during dilation, looking for subtle changes that indicate disease before significant damage occurs. Depending on the condition, treatment options include monitoring, laser therapy, intravitreal injections, or surgical referral. Regular eye exams are especially important for patients with diabetes, hypertension, a family history of AMD, or those over 60.

Frequently Asked Questions

Your questions, answered

Can an eye exam detect glaucoma or cataracts?

Yes. During a dilated eye exam, your doctor examines the optic nerve for signs of glaucoma and evaluates the lens for early cataract changes — often before you notice any symptoms. Early detection gives you far more treatment options.

How often should I get an exam if I have a family history of glaucoma?

Adults with a family history of glaucoma should have a comprehensive dilated eye exam at least once a year. Glaucoma often has no early warning signs, so regular monitoring is the only reliable way to catch it in time. Call us at (718) 998-8400 or book through Zocdoc to schedule your next exam.

Is it normal for my prescription to change each year?

Some year-to-year change is completely normal, especially in children and teenagers whose eyes are still developing. Gradual shifts in adults are also common. However, a large or rapid change warrants a thorough exam to rule out underlying conditions such as keratoconus, uncontrolled diabetes, or early cataracts.