Cataracts, glaucoma, and macular degeneration show up on the same list of age-related eye conditions — but they are three entirely different diseases, affecting different structures of the eye, progressing in different ways, and requiring different treatments. Knowing which is which matters, because one of them has no symptoms until significant damage is already done.
Brandon Menke, MD, of ilumin Eye Care Center in Omaha sat down with KETV’s Very Local Business Spotlight to answer exactly this question.
What Are Cataracts and How Do You Know When You Have Them?
Dr. Menke describes cataracts in terms most people immediately recognize. “Cataracts are where as we age that little clear M&M inside of our eye becomes hard,” he explains. “It becomes yellow and hazy. Then we call that a cataract.”
The lens he is describing sits inside the eye and focuses light onto the retina. When that lens hardens and yellows, vision becomes progressively blurry, washed out, and difficult in low light. Many patients first notice the change in their 40s, when the same stiffening process makes reading without glasses harder. Full cataracts typically develop later, and the treatment is surgical: “We do cataract surgery to take that cloudy lens out and put a new permanent lens in to get you seeing better.”
Cataract surgery is one of the most performed procedures in medicine, and the outcomes are highly predictable. At ilumin, which has served Omaha with ophthalmology and optometry care for over 100 years, the surgical team handles cataracts as part of a broader approach to preserving vision across a patient’s lifetime.
Can You Have Glaucoma Without Knowing It?
The difference between cataracts and glaucoma is stark. Cataracts produce noticeable symptoms. Glaucoma often produces none — at least not until vision loss has already occurred.
“Glaucoma is often silent,” Dr. Menke says. The disease affects the optic nerve, which carries visual information from the eye to the brain. As pressure inside the eye gradually increases with age, it damages that nerve without triggering any sensation the patient can detect. “Kind of like having slightly elevated blood pressure. We don’t feel that in our bodies and so a lot of people if we don’t get checked that pressure can slowly creep up damaging the nerve, the optic nerve, without people knowing it.”
The vision loss that follows moves from the edges inward, “stealing vision from the outside in,” as Dr. Menke describes it. By the time a patient notices peripheral vision narrowing, meaningful damage has already occurred. There is no recovering what is lost — only stopping further progression. That is why routine eye exams that measure intraocular pressure are the primary defense against glaucoma. Catching elevated pressure early, before the nerve sustains damage, is the entire goal.
For patients already diagnosed, ilumin uses various techniques to keep pressure at appropriate levels and prevent further advancement. You can find a full overview of glaucoma treatment options at ilumineyes.com/medical-conditions/.
What Does Macular Degeneration Do to Your Vision?
Where glaucoma attacks the optic nerve, macular degeneration attacks the retina — the light-sensitive tissue at the back of the eye. Dr. Menke reaches for an analogy that clarifies the difference immediately: “If you think of the eye kind of like a camera, the film of the camera is the retina.”
The macula is the central portion of that retina, responsible for the sharp, detailed vision used for reading, recognizing faces, and driving. As the eye ages, cellular waste products accumulate beneath the retina, and the tissue can thin, develop gaps, or in advanced cases, grow abnormal blood vessels that leak. “We get these aging products where the retina can have some kind of holes in it, and that’s the dry form of macular degeneration,” Dr. Menke explains.
Dry macular degeneration is the more common form and progresses slowly. The wet form involves abnormal blood vessel growth and can advance rapidly. Both are treatable. “We have treatments for both the wet and the dry form to keep people seeing their best,” Dr. Menke says. Treatment does not reverse existing damage but slows or halts further loss.
Why Does It Matter Which of These Eye Conditions You Have?
A patient who confuses cataracts with macular degeneration may assume their blurry vision is surgical and treatable when a different process is underway. A patient who dismisses glaucoma as “something they would notice” may skip the annual exam that would have caught rising pressure in time to protect their optic nerve.
Understanding what is the difference between cataracts, glaucoma, and macular degeneration is essential for staying on top of your eye health as you age. The three conditions affect different parts of the eye, present differently, and require entirely different responses from a clinical team. Each one calls for the right specialist, the right diagnostic tools, and the right timing.
At ilumin Eye Care Center in Omaha, NE, the ophthalmology team diagnoses and treats all three. With over 100 years of combined ophthalmology and optometry experience serving the Omaha community, the physicians at ilumin have managed these conditions across every stage and presentation.
If it has been more than a year since your last comprehensive eye exam — or if you have a family history of any of these conditions — schedule an appointment at ilumineyes.com or call 402-933-6600. The earlier these conditions are identified, the more vision there is to protect.
Full Video Transcript
Host: Get ready for another Very Local Business Spotlight. Today, we’re at ilumin Eye Care talking to Dr. Brandon Menke about common issues we see with aging eyes. Dr. Menke, as our eyes age, what kinds of issues do you see here at ilumin?
Brandon Menke, MD: I’d say the three main things that we see as people age are cataracts, glaucoma, and macular degeneration.
Host: And what is cataracts?
Dr. Menke: Cataracts are where as we age that little clear M&M inside of our eye becomes hard. That’s when people typically in their 40s need reading glasses. It becomes yellow and hazy. Then we call that a cataract. We do cataract surgery to take that cloudy lens out and put a new permanent lens in to get you seeing better.
Host: And glaucoma?
Dr. Menke: Glaucoma is often silent.
Host: What are the signs?
Dr. Menke: Glaucoma is a disease of the optic nerve where with time and age the pressure creeps up and the reason people say that it’s silent is because we don’t feel that. Kind of like having slightly elevated blood pressure. We don’t feel that in our bodies and so a lot of people if we don’t get checked that pressure can slowly creep up damaging the nerve, the optic nerve, without people knowing it. and then stealing vision from the outside in.
Host: And macular degeneration, what are the signs people should be looking for?
Dr. Menke: If you think of the eye kind of like a camera, the film of the camera is the retina. That’s where with time and age, we get these aging products where the retina can have some kind of holes in it, and that’s the dry form of macular degeneration. So for cataracts, we do cataract surgery. For glaucoma, we do various techniques to keep people’s pressure appropriate and low so they don’t advance. And for macular degeneration, we have treatments for both the wet and the dry form to keep people seeing their best.
Host: All right. Thank you so much, Dr. Menke.
