Eye Test

 Louis H. Sweterlitsch, M.D.

 Comprehensive Ophthalmology

Please note that our office has  moved to a new, convenient location!

This office is compliant with CDC Covid -19 protocols for patient safety!


In addition to surfactant disinfection, ultraviolet light disinfection is utilized in exam rooms prior to each patient appointment.



Dr. Sweterlitsch

As a board certified ophthalmologist in PA, Dr. Louis Sweterlitsch is trained to diagnose, treat, and manage diseases or trauma of the eye. Dr. Sweterlitsch may treat conditions such as cataracts, glaucoma, corneal tumors, retinal disorders, conjunctivitis, astigmatism and ocular tumors. Treatments may include the prescription of medication or surgeries such as corrective surgery (e.g. LASIK), cataract surgery, or glaucoma surgery.

Dr. Sweterlitsch is certified by the American Board of Ophthalmology and is a Fellow of the American Academy of Ophthalmology. He is also an attending physician on the medical staff at St. Luke’s hospital.




Dr. Sweterlitsch is a graduate of Gannon University where he majored in Biology. He attended Jefferson Medical College of Thomas Jefferson University and received his medical degree in 1992.


Following graduation, he completed his internship at Lehigh Valley Hospital in Allentown, Pennsylvania. Dr. Sweterlitsch’s training included an ophthalmology residency at the Greater Baltimore Medical Center. He received his Pennsylvania State Medical license in 1996.

Education and Training

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Treatment Philosophy

“Providing excellence in personalized patient care, while forming long-term relationships are guiding principles upon which our practice was established in 1964, and those that we strive to achieve everyday”, says Dr. Sweterlitsch.

"As we go through life we all experience different eye care needs, and our practice is dedicated to supporting our patients from childhood all the way through their golden years."

“Correcting vision problems, and successfully treating diseases of the eye can profoundly improve and elevate a patient’s quality of life, and that is one of the most rewarding aspects of being an ophthalmologist.”

Dr. Sweterlitsch is a third generation physician practicing in Pennsylvania. His grandfather practiced internal medicine in Pittsburgh, PA., while his father Louis H. Sweterlitsch Jr. practiced ophthalmology in the Lehigh Valley for nearly 50 years, and has since retired.  


Dr. Sweterlitsch III resides in Saucon Valley where he is active in the community with his wife and three children.

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Eye Test Glasses

Treatment Areas


Dr. Sweterlitsch treats a wide array of eye conditions and diseases, some of which are listed below. Early detection and intervention are important elements to successful treatment. If you believe you have experienced any sudden changes in your vision or if you are experiencing uncommon issues, it is important that you see the Doctor as soon as possible. Good eye health requires regular eye examinations. Schedule an appointment today!


Cataracts are a clouding of the normally clear lens of the eye. Most cataracts develop slowly over the course of years. The main symptom is blurry vision. Having cataracts can be like looking through a cloudy window. If impaired vision interferes with your usual activities, you might need cataract surgery. 


Glaucoma is a group of eye conditions that damage the optic nerve, the health of which is vital for good vision. This damage is often caused by an abnormally high pressure in your eye. Glaucoma is one of the leading causes of blindness for people over the age of 60.

Macular Degeneration

Macular Degeneration is caused by the deterioration of the central portion of the retina, the inside back layer of the eye that records the images we see and sends them via the optic nerve from the eye to the brain. The retina’s central portion, known as the macula, is responsible for focusing central vision in the eye, and it controls our ability to read, drive a car, recognize faces or colors, and see objects in fine detail.

Diabetic Retinopathy

People with diabetes can have an eye disease called diabetic retinopathy. This is when high blood sugar levels cause damage to blood vessels in the retina. These blood vessels can swell and leak. Or they can close, stopping blood from passing through. 

Uveitis is a general term describing a group of inflammatory diseases that produces swelling and destroys eye tissues. These diseases can slightly reduce vision or lead to severe vision loss.

Dry Eyes

Dry eye is a condition in which a person doesn't have enough quality tears to lubricate and nourish the eye. Tears are necessary for maintaining the health of the front surface of the eye and for providing clear vision.

Excessive Tearing

If the tear ducts become blocked, tears can well up in the eye and fall excessively. This leads to watery eye (epiphora), often mistaken for crying. Tear ducts can become blocked from infection and inflammation, both of which can also lead to excessive tear production.

Diagnostics and Examinations 

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Eye Exam

Dr. Sweterlitsch performs comprehensive tests to fully examine the health of your eyes, and to determine the acuity of your vision. The office utilizes the most advanced, state of the art equipment available. Some of the most common tests are listed below. If you have experienced any changes in your vision, or if your last appointment was one year ago or longer, schedule your annual eye exam today!

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A refraction is an eye exam that measures a person's prescription for eyeglasses or contact lenses.


Visual Acuity

A visual acuity test is an eye exam that checks how well you see the details of a letter or symbol from a specific distance.


Retinal Exam

retinal examination sometimes called ophthalmoscopy or funduscopy allows Dr. Sweterlitsch to evaluate the back of your eye, including your retina, optic disk and the underlying layer of blood vessels that nourish the retina (choroid).


Ocular Tonometry

Tonometry is a diagnostic test that measures the pressure inside your eye, which is called intraocular pressure (IOP).

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Slit Lamp Test

A slit lamp is a microscope with a bright light used during an eye exam. It gives Dr. Sweterlitsch a closer look at the different structures at the front of the eye and inside the eye. It’s a key tool in determining the health of your eyes and detecting eye disease.

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Visual Field Test

Visual field testing is one way Dr. Sweterlitsch measures how much vision you have in either eye, and how much vision loss may have occurred over time.

Welcoming New Patients!

Insurance Policy

Nearly all major insurance plans accepted!
Call with any questions:

Dr. Sweterlitsch accepts nearly all insurance plans. If your plan is not listed below, please call us for information on your plan. Dr. Sweterlitsch is registered with Medicare and accepts claims assignment. Medicare beneficiaries still have to pay a coinsurance or copayment amount for a visit or service. Dr. Sweterlitsch is eligible to order or refer healthcare services for Medicare patients.


Office Hours:

Monday-Wednesday: 8am to 5pm

Thursday-Friday: 8am to 12pm

Saturday: Closed

Sunday: Closed

Phone: 610-867-5061

Fax: 610-867-5062


3445 Highpoint Blvd.

Suite 400

Bethlehem, PA 18017

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