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Clarissa De Paz, OD

Optometrist

Optometrist in Richardson and Sunnyvale

With more than 38 years of clinical experience, Dr. Clarissa De Paz provides trusted eye care for patients in Richardson and Sunnyvale. She offers a wide range of services, including comprehensive eye exams, pre-and post-operative care, dry eye management, glaucoma care, retina evaluations, and treatment of ocular disease.

Dr. De Paz completed advanced fellowship training in low vision and ocular disease, giving her a strong foundation for diagnosing and managing complex conditions. She is fluent in English, Spanish, and Italian, ensuring clear communication and compassionate care for a diverse community of patients.

Dr. De Paz looks forward to being your trusted optometrist and is now accepting new patients at both of our convenient Sweeney Eye Associates locations in Richardson and Sunnyvale.

Services

Regular eye exams are the foundation of lifelong vision health. Dr. De Paz provides thorough evaluations to detect changes in vision and identify early signs of eye conditions.

From cataract to refractive procedures, Dr. De Paz guides patients before and after surgery to ensure clear understanding, comfort, and a smooth recovery.

Glaucoma is a leading cause of vision loss, but early diagnosis and treatment can preserve sight. Dr. De Paz provides ongoing monitoring and management tailored to each patient. Learn More About Glaucoma

Dr. De Paz provides retinal screenings and evaluations to detect early signs of conditions such as diabetic retinopathy and macular degeneration. She uses advanced diagnostic tools to monitor retinal health and help patients understand their risk factors.

When advanced treatment is needed, Dr. De Paz works closely with our fellowship-trained retina specialists, ensuring patients receive seamless care and access to surgical or injection therapies when appropriate.


Blogs:

Eye Exam Sweeney Eye Associates
General Eye Care | LASIK | Refractive Lens Exchange

Eye Exams After LASIK or RLE

Still 20/20 After LASIK or RLE? Here’s Why You Still Need Yearly Eye Exams Vision correction procedures like LASIK and Refractive Lens Exchange (RLE) can dramatically change your life for the better. But even with crisp vision, your eyes can develop conditions that don’t cause symptoms at first. Annual comprehensive exams protect your results and…

Choosing the Right Lens for Cataract Surgery
Cataracts | Laser Assisted Surgery | Light Adjustable Lens | Premium Lens Options

Choosing the Right Lens for Cataract Surgery

What Patients at Sweeney Eye Associates Should Know Your lens choice will shape how you see the world for the rest of your life. At Sweeney Eye Associates in North Dallas, our cataract surgeons — Dr. Patrick Sweeney and Dr. Vincent Venincasa — help you navigate today’s advanced lens options so your choice fits your…

Can the Sun Make Cataracts Worse?
Cataracts | Comprehensive Eye | Uncategorized

Can the Sun Make Cataracts Worse?

The North Texas sun may brighten your day, but it could also be making your cataracts worse. It’s important for our patients to know that UV exposure is one of the few preventable factors known to speed up cataract progression, particularly in sunny climates like ours. If you’re waiting to have cataract surgery, you should…

Why Your Eye Doctor May Be the Best Place for Cosmetic Care
Oculoplastic and Cosmetic

Why Your Eye Doctor May Be the Best Place for Cosmetic Care

When you think of your eye doctor, Botox® and facial rejuvenation might not be the first services that come to mind. But at Sweeney Eye Associates, our expertise extends beyond clear vision. We also specialize in advanced cosmetic and oculoplastic care. If you haven’t considered your eye doctor for Botox, Xeomin®, blepharoplasty, or other cosmetic…

Headaches, Halos, and Hazy Vision: 5 Red Flags for Your Eyes
General Eye Care | Uncategorized

Headaches, Halos, and Hazy Vision: 5 Red Flags for Your Eyes

Do your eyes feel tired, blurry, or strained after work, gaming, or long hours on your phone? You’re not alone. Millions of Americans experience these symptoms, but many don’t realize they’re warning signs of something more serious. At Sweeney Eye Associates, with convenient offices in Richardson and Sunnyvale, Texas, our doctors help patients every day…

Dr. Sweeney Named To America’s Leading Doctors for 2025
Cataracts | Expert Surgeon | Uncategorized

Dr. Sweeney Named To America’s Leading Doctors for 2025

Patrick Sweeney, M.D. | Top Cataract Surgeon We are thrilled to share some exciting news from all of us at Sweeney Eye Associates: Dr. Patrick Sweeney has been named one of America’s Leading Doctors for 2025 in the cataract category by Newsweek and Statista! This national recognition honors physicians who demonstrate outstanding clinical expertise, patient care, and innovation in their…

Why So Many People Need Reading Glasses After 40 — And What Vision Correction Options Are Available
Comprehensive Eye | General Eye Care | Refractive Lens Exchange | Uncategorized

Why So Many People Need Reading Glasses After 40 — And What Vision Correction Options Are Available

If you’ve found yourself reaching for reading glasses more often after turning 40, you’re not alone. Nearly everyone experiences a natural vision change called presbyopia, and while it’s common, it can be frustrating. At Sweeney Eye Associates, we believe you deserve long-term solutions that match your lifestyle. That’s why we offer procedures like Refractive Lens…

Are Refractive Lens Exchange (RLE), Clear Lens Exchange, and Lens Replacement Surgery the Same Thing?
Refractive Lens Exchange | Uncategorized

Are Refractive Lens Exchange (RLE), Clear Lens Exchange, and Lens Replacement Surgery the Same Thing?

Understanding the Names Behind the Procedure at Sweeney Eye Associates. When researching vision correction options, you might come across different terms like Refractive Lens Exchange (RLE), Clear Lens Exchange (CLE), and Lens Replacement Surgery. If you’re wondering whether these are different procedures or just different names — here’s the simple answer: ✅ They All Mean…

5 Essential Eye Care Tips for Diabetic Patients
Diabetic Retinopathy | Retina | Uncategorized

5 Essential Eye Care Tips for Diabetic Patients

At Sweeney Eye Associates, Dr. Matthew Lippas specializes in retina care for patients in Richardson, Sunnyvale, Murphy, and Dallas. Managing diabetes brings unique challenges, especially during the summer, when routines and health habits may shift. For those with diabetes, maintaining eye health is critical, as diabetic retinopathy can lead to serious complications if left untreated….

What Does High Eye Pressure Really Mean?
General Eye Care | Glaucoma | Retina | Uncategorized

What Does High Eye Pressure Really Mean?

Understanding Glaucoma Risk, Diagnosis & When to Act If you’ve ever been told your eye pressure is high, you might have left your exam wondering: Do I have glaucoma? Should I be worried? At Sweeney Eye Associates, our board-certified glaucoma specialists know how confusing it can be to hear terms like “intraocular pressure,” “ocular hypertension,”…

Do I Need a Retina Specialist?
AMD | Retina

Do I Need a Retina Specialist?

Signs of Retinal Disease: What to Watch For and Where to Get Treatment Some vision problems go beyond routine eye exams. If you’re noticing sudden changes in your sight—like blurriness, shadows, floaters, or distortion—it may be time to see a retina specialist. At Sweeney Eye Associates, our retina team—including Dr. Sai Chavala and Dr. Matthew…

Cataracts: When to Monitor and When It’s Time for Surgery
Cataracts

Cataracts: When to Monitor and When It’s Time for Surgery

Not All Cataracts Need Surgery—Here’s How to Know What’s Right for You If you’ve been told you have a cataract, you might feel uncertain about what comes next. At Sweeney Eye Associates, with convenient locations in both Richardson and Sunnyvale, Texas, we want to make one thing clear: not all cataracts require surgery right away….

Cataract Awareness Month 2025: What’s New and Why the Right Care Matters
Cataracts | Laser Assisted Surgery | Light Adjustable Lens | Premium Lens Options

Cataract Awareness Month 2025: What’s New and Why the Right Care Matters

Cataract surgery has advanced dramatically in the last decade. It’s one of the most common, and successful, procedures in the world today. And yet, many people still have outdated ideas about what cataracts are, how surgery and recovery works, and when it should happen. At Sweeney Eye Associates, with offices in Sunnyvale and Richardson, we’re…

Elegant outdoor portrait of a smiling woman in Berlin, Germany.
LASIK | Refractive Lens Exchange | Uncategorized

RLE Explained: Lifelong Vision Enhancement for Adults 40+

Refractive Surgery Explained by Dr. Sweeney and Dr. Venincasa If you’re over 40 and tired of reaching for reading glasses—or struggling with both distance and near vision—Refractive Lens Exchange (RLE) may be the solution you’ve been looking for. While LASIK often dominates the conversation, the refractive experts at Sweeney Eye Associates are noticing that RLE…

Secondary Cataract
Cataracts | Uncategorized

Understanding Secondary Cataracts and the YAG Laser Treatment

Experiencing Blurry Vision After Cataract Surgery? It Might Be a Normal Change — and It’s Easy to Treat If you’ve had cataract surgery and are now noticing blurry vision again, or your eye doctor mentioned something called a YAG laser procedure, there’s no need to worry. This is not uncommon, and in many cases, it’s…

LASIK Clear Vision at Sweeney Eye Associates
General Eye Care | LASIK | Uncategorized | Vision Correction

Is LASIK Right for You?

Discover LASIK Surgery at Sweeney Eye Associates in Sunnyvale and Richardson If you’ve been considering LASIK eye surgery to improve your vision, you’re probably wondering whether it’s the right choice for you. LASIK surgery offers many long-term benefits, including the freedom from glasses or contact lenses and an improved quality of life with clearer vision….

Precision You Can See: Femtosecond Laser-Assisted Cataract Surgery at Sweeney Eye Associates
Cataracts | Laser Assisted Surgery | Uncategorized

Precision You Can See: Femtosecond Laser-Assisted Cataract Surgery at Sweeney Eye Associates

At Sweeney Eye Associates, we understand that choosing cataract surgery is a big decision—and we’re proud to offer one of the most advanced options available today: Femtosecond Laser-Assisted Cataract Surgery (FLACS). This breakthrough technology adds a new level of precision, safety, and customization to the cataract surgery experience. What Is FLACS? Femtosecond Laser-Assisted Cataract Surgery…

Erase Wrinkles Without Surgery: Non-Surgical Rejuvenation in Dallas | Sweeney Eye Associates
Oculoplastic and Cosmetic | Uncategorized

Erase Wrinkles Without Surgery: Non-Surgical Rejuvenation in Dallas | Sweeney Eye Associates

Non-Surgical Facial Rejuvenation in Dallas | Sweeney Eye Associates Looking to smooth out fine lines or restore youthful volume—without surgery? At Sweeney Eye Associates, we understand that looking your best can help you feel your best. That’s why we offer a full suite of non-surgical cosmetic treatments, designed to rejuvenate your appearance while keeping things natural, subtle,…

Why Regular Eye Exams Matter When You’re Managing a Chronic Condition
AMD | Comprehensive Eye | Diabetic Retinopathy | Dry Eye | Glaucoma | Retina | Uncategorized | Vision Correction

Why Regular Eye Exams Matter When You’re Managing a Chronic Condition

You’ve got enough to juggle with a chronic condition — medications, checkups, diet, maybe even those suspicious vitamins from Instagram. It’s easy to bump your eye exam to the bottom of the to-do list, especially if your vision seems “fine.” But at Sweeney Eye Associates, we see the other side — the patients who felt fine…

“Happy senior cataract surgery patient with doctor after successful recovery”
Cataracts

Recovering from Cataract Surgery at Sweeney Eye Associates: Timeline, Tips & What to Expect

REGAINING CLEAR VISION STARTS HERE Cataract surgery is one of today’s most effective and life-changing procedures. At Sweeney Eye Associates, our board-certified cataract surgeons—Dr. Patrick Sweeney and Dr. Vincent Venincasa—provide advanced care using the latest technology at the trusted Beltline Surgery Center in Dallas County. The procedure itself is quick and painless, but understanding the recovery timeline helps you prepare…

Understanding Eyelid Surgery at Sweeney Eye Associates
Featured | Oculoplastic and Cosmetic | Uncategorized

Understanding Your Eyelid Procedure Options

Oculoplastic Services at Sweeney Eye Associates By Dr. Jaffe, Oculoplastic Surgeon at Sweeney Eye Associates As an oculoplastic surgeon, I specialize in procedures that enhance both the function and appearance of the eyelids. Many patients come to me with concerns about drooping eyelids, puffiness, or heavy brows that make them look tired or even interfere…

Eye Exams Without Dilation?
Comprehensive Eye | Vision Correction

Eye Exams Without Dilation?

Dilation vs. Eidon Camera: How Advanced Imaging Enhances Your Eye Exam Let’s be honest—getting your eyes dilated isn’t exactly fun. The blurry vision, light sensitivity, and waiting for your pupils to return to normal can make it one of the less pleasant parts of an eye exam. But at Sweeney Eye Associates, we offer advanced imaging technology that,…

Living with Diabetic Retinopathy: Protecting Your Vision and Managing Your Eye Health
Comprehensive Eye | Diabetic Retinopathy | Retina

Living with Diabetic Retinopathy: Protecting Your Vision and Managing Your Eye Health

Diabetes affects more than just blood sugar levels—it can have serious consequences for your eyesight. Diabetic retinopathy is one of the most common complications of diabetes and the leading cause of vision loss in working-age adults. However, with early detection, lifestyle changes, and advanced treatments, you can take control of your eye health and preserve your vision. At Sweeney…

Best Cataract Surgery Solution After LASIK: Light Adjustable Lenses (LAL) Explained
Cataracts | Featured | LASIK | Light Adjustable Lens | Premium Lens Options

Best Cataract Surgery Solution After LASIK: Light Adjustable Lenses (LAL) Explained

An Interview With Dr. Vincent Venincasa Had LASIK or PRK Before? Is the Effect Wearing Off or Have You Developed a Cataract? You’re not alone. Millions of people have benefited from LASIK, enjoying years of clear, glasses-free vision. However, like everyone, LASIK patients can eventually develop age-related cataracts, which affect vision over time. When it comes to…

iDose®: A Game-Changer in Glaucoma Treatment at Sweeney Eye Associates
Featured | Glaucoma | Vision Correction

iDose®: A Game-Changer in Glaucoma Treatment at Sweeney Eye Associates

Managing glaucoma can feel overwhelming, especially when daily eye drops are required to control intraocular pressure (IOP). These drops can be hard to maintain and often lead to discomfort. At Sweeney Eye Associates, we proudly offer a cutting-edge solution: the iDose® sustained-release implant. What is Glaucoma? Glaucoma is a serious eye condition often caused by…

Sweeney Blog - Glaucoma 101
Comprehensive Eye | Glaucoma | Uncategorized

Glaucoma 101: Warning Signs, FAQs, and How to Protect Your Vision

January is Glaucoma Awareness Month, which makes it a great time to spotlight Glaucoma, one of the leading causes of blindness worldwide. Often called the “silent thief of sight,” glaucoma can progress without noticeable symptoms, making early detection crucial. At Sweeney Eye Associates, our mission is to empower you with the knowledge and care needed…

woman smiling
Comprehensive Eye | Glaucoma | LASIK | Refractive Lens Exchange | Retina | Uncategorized | Vision Correction

Vision Correction for Diabetic Patients

Can You Get Vision Correction Surgery If You Have Diabetes? If you have diabetes and dream of freedom from glasses or contacts, you may wonder: “Is LASIK or Refractive Lens Exchange (RLE) an option for me? The good news? Vision correction surgery can often be an option for people with diabetes— but meeting specific health…

Your Guide to Treating Dry Eyes
Comprehensive Eye | Dry Eye | Uncategorized

Your Guide to Treating Dry Eyes

Dry eyes are more than just a minor inconvenience — they can interfere with your daily activities and cause significant discomfort. At Sweeney Eye Associates, we frequently see patients struggling with dry eye symptoms, particularly during the fall season when allergens and environmental factors in North Texas are at their peak. In this guide, I’ll…

How Refractive Lens Exchange Corrects Your Vision and Prevents Cataracts
Cataracts | Refractive Lens Exchange | Vision Correction

How Refractive Lens Exchange Corrects Your Vision and Prevents Cataracts

Refractive Lens Exchange (RLE) is a revolutionary procedure that not only corrects your vision but also offers the unique advantage of preventing cataracts in the future. If you’re over 40 and considering options to improve your vision, RLE might be the perfect solution for you. In this blog, We’ll explore how RLE works, who can…

Sweeney Eye Associates Corneal Cross-Linking
Comprehensive Eye | Cornea | Uncategorized

Understanding Corneal Cross-Linking

Cross-Linking Insights from Lynn Ehrhardt, M.D. At Sweeney Eye Associates, we frequently encounter patients with keratoconus who have done their homework and come prepared with a solid understanding of their condition and treatment options. One of the most common inquiries we receive is about corneal cross-linking (CXL). While the basics of CXL are widely known,…

Unveiling the Artistic Vision of Oculoplastic Surgery
Oculoplastic and Cosmetic

Unveiling the Artistic Vision of Oculoplastic Surgery

Sweeney Eye Associates understands that the eyes are more than just windows to the soul; they are also an important aspect of an individual’s appearance and expression. Oculoplastic surgery, a specialist area that combines ophthalmology with plastic surgery, provides revolutionary treatments for a wide range of aesthetic and functional eye issues. Dr. Mark Jaffe, our…

Hidden Sources of UV Rays and the Importance of UV Protection for Your Eyes
Comprehensive Eye

Hidden Sources of UV Rays and the Importance of UV Protection for Your Eyes

July is UV Safety Month, which makes it the perfect time learn how to protect your eyes from UV exposure. While the sun is the most obvious source of UV rays, hidden sources such as reflective surfaces, artificial sources, high altitudes, and overcast days also pose risks to your eye health. By understanding these hidden…

Your Guide to Choosing the Best Cataract Surgeon  
Cataracts | Comprehensive Eye | Expert Surgeon | Laser Assisted Surgery | Light Adjustable Lens | Premium Lens Options | Uncategorized

Your Guide to Choosing the Best Cataract Surgeon  

As leaders in ophthalmology, Sweeney Eye Associates understands the importance of finding a skilled and experienced surgeon for your cataract surgery. If you are looking for what to look for when choosing the best cataract surgeon, you have come to the right place. From educational background and surgical experience to technological advancements and patient-centered care, we are committed to…

Navigating Challenges and Finding Hope: Living with Retinal Conditions
AMD | Diabetic Retinopathy | Retina

Navigating Challenges and Finding Hope: Living with Retinal Conditions

Living with retinal conditions can pose significant challenges, impacting both vision and overall well-being. At Sweeney Eye Associates, serving the metroplex with locations in Sunnyvale and Richardson, we understand the complexities of these conditions. Dr. Matthew Lippas, our retina specialist is dedicated to providing comprehensive care and support for patients facing retinal issues. With nearly…

Glasses vs. Vision correction
LASIK | Refractive Lens Exchange | Uncategorized

Through the Lens: Eyeglasses or Vision Correction – What’s Best for You?

Join Dr. Venincasa and Dr. Sweeney, Board-Certified Ophthalmologists with Sweeney Eye Associates, as they delve into the world of vision enhancement, empowering you to make informed decisions about your eye health and visual acuity. Understanding Age-Related Vision Changes As we age, our eyes undergo changes that can impact our ability to see clearly, especially up…

Sweeney Eye Associates
Comprehensive Eye | LASIK | Premium Lens Options | Refractive Lens Exchange | Uncategorized

Unlocking the Secrets to Lifelong Vision: A Guide to Healthy Eyes as You Age

May is Healthy Vision Month, a time to raise awareness about the importance of maintaining healthy eyesight throughout our lives. At Sweeney Eye Associates, we understand the significance of proactive eye care, especially as we age and face unique challenges to our vision. Let’s explore the key concerns for eye health at different stages of…

Unmasking the Myths: Demystifying Common Eye Care Beliefs
Comprehensive Eye

Unmasking the Myths: Demystifying Common Eye Care Beliefs

In the world of eye care, there are numerous myths and misconceptions that can cloud our understanding of how to best care for our vision. At Sweeney Eye Associates, your vision is our priority! We’re dedicated to providing you with accurate information and facts about eye care. With our focus on your vision health, you…

Focus on Light Adjustable Lenses
Cataracts | Light Adjustable Lens | Premium Lens Options | Uncategorized

Focus on Light Adjustable Lenses

Embrace Personalized Vision with Advanced Light Adjustable Lenses At Sweeney Eye Associates, we’re dedicated to keeping you informed about the latest advancements in cataract surgery. Today, we want to dive into the realm of personalized vision correction with Light Adjustable Lenses (LAL), an innovative technology that is reshaping the way we approach post-cataract surgery vision…

How to Save on Eye Care Services
Cataracts | Comprehensive Eye | Diabetic Retinopathy | Dry Eye | Glaucoma | LASIK | Premium Lens Options | Uncategorized

Maximizing Tax Deductions for Eye Care: A Guide from Sweeney Eye Associates 

The team at Sweeney Eye Associates wants to empower you to make the most of your dollars, especially when it comes to ophthalmology procedures. While we recommend you consult with a qualified tax professional, we can help you learn where you can save on procedures and how you can use pre-tax dollars to plan for…

The Expertise of Eye Doctors in Cosmetic Procedures
Oculoplastic and Cosmetic | Uncategorized

The Expertise of Eye Doctors in Cosmetic Procedures

At Sweeney Eye Associates, our commitment goes beyond ensuring clear vision; we understand the significance of how you present yourself to the world. Dr. Mark Jaffe, our team’s oculoplastic surgeon, offers a range of cosmetic enhancements, including Xeomin injections (a Botox alternative) to ensure your aesthetic appearance is as good as your eyesight. Read on…

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