Jonathan Katz, MD
Ophthalmologist
Glaucoma Specialist
Medical and surgical care for glaucoma, and cataract surgery, at Katzen Eye Group in the Baltimore area.
Patient tools
Interactive tools built for the exam room and the kitchen counter. Everything prints cleanly, works on a phone, and can be saved to your calendar with reminders.
Post-Op Eye Drop Schedule
Pick the surgery and the drops prescribed; get a day-by-day tapering checklist with calendar reminders and a QR code.
Eye Drop Schedule Builder
List your daily eye drops and pills and get a large-print routine with suggested times and five-minute spacing, plus phone reminders.
Eye Medication Reference
Photos, cap colors, uses and typical dosing for common eye drops, eye pills and artificial tears, searchable and filterable.
What Vision Loss Looks Like
See glaucoma, cataract, macular degeneration and other conditions applied to everyday scenes, from early to advanced, and share the view with family.
Glasses Prescription Simulator
Enter a glasses prescription and see distance, arm's length and reading vision, with and without the glasses.
About Dr. Katz
Dr. Jonathan Katz is a fellowship-trained glaucoma specialist and comprehensive ophthalmologist who joined Katzen Eye Group in 2019. He treats primary and secondary glaucoma medically and surgically, from laser and minimally invasive procedures to trabeculectomy and tube shunt surgery, and performs cataract surgery. He trained at George Washington University and completed his residency and glaucoma fellowship at the Emory Eye Center.
Appointments
To schedule or reschedule a visit, call the office you see Dr. Katz at:
- Lutherville / Towson 410-821-9490
- Rosedale 410-866-2022
Hours, addresses and maps are on the Contact page. For urgent eye problems after hours, call your office number and follow the instructions.
Learn
Plain-language explanations of glaucoma, the tests used to follow it, and what to expect from treatment.
What Is Glaucoma?
Glaucoma is damage to the optic nerve, usually linked to eye pressure. Why it has no symptoms early, who is at risk, and how it is treated.
How Treatments Lower Eye Pressure
The eye as a sink: a faucet that makes fluid, drains that carry it away, and a water level that is the eye pressure. Tap each glaucoma treatment (drops, SLT, MIGS, trabeculectomy, tube shunt, cyclophotocoagulation) to see what it changes.
What Vision Loss Looks Like
An interactive simulator of glaucoma, cataract, macular degeneration, diabetic retinopathy, retinal detachment, stroke, dry eye, floaters and more, with plain-language explanations of each.
Your Glasses Prescription
Enter a glasses prescription and see how the world looks with and without it at distance, arm's length and reading distance, compared with normal vision.
Glaucoma Testing
What happens at a glaucoma visit: eye pressure, the visual field test, OCT imaging, gonioscopy and corneal thickness, and what the results mean.
Using Eye Drops
Step-by-step technique for putting in eye drops, why to wait five minutes between drops, pressing the tear duct, missed doses, storage and refills.
SLT Laser
Selective laser trabeculoplasty: an office laser that lowers eye pressure by treating the eye's drain. What it is for, what the visit is like, and what to expect afterward.
Laser Iridotomy
Laser peripheral iridotomy: a quick office laser that makes a tiny opening in the iris to open a narrow drainage angle. With an animation of what the laser does, what the visit is like, and what to expect afterward.
MIGS
Minimally invasive glaucoma surgery: small implants and procedures, often combined with cataract surgery, that lower pressure with a quicker recovery than traditional surgery.
Trabeculectomy
Trabeculectomy creates a new drainage channel under the eyelid to lower eye pressure in advanced glaucoma. What the operation involves, the twelve-week recovery, and warning signs.
Tube Shunt Surgery
Glaucoma drainage devices (Ahmed, Baerveldt): a small tube and plate that drain fluid from the eye. Who they are for, the operation, and the six-week recovery.
Cataract Surgery
What a cataract is, when surgery makes sense, lens implant choices, the day of surgery and the four-week recovery, and what is different if you also have glaucoma.
YAG Capsulotomy
YAG laser capsulotomy: a quick office laser that clears the cloudy capsule that can form behind a lens implant after cataract surgery. With an animation of what the laser does and how vision changes, what the visit is like, and what to expect afterward.