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Eye Clinic

We offer comprehensive eye care for you and your family.

Our board-certified ophthalmologist, Mark Calderwood, MD, has a long history of providing excellent eye care in the Bitterroot Valley.

Board-certified and Fellowship trained ophthalmologist, Brock Alonzo, MD, specializes in cataract surgery and the treatment of glaucoma.

Our services

Complete eye examinations

Routine eye exams are an important way to stay on top of your vision and overall eye health. As part of your complete eye exam, we offer preventive screenings, and we monitor for any eye diseases or concerns you may have. Diagnosing eye disease early can help maintain healthy, optimal vision.

Diabetic eye care

When glucose levels remain high over time, it can damage the blood vessels at the back of the eye, causing bleeding in the eye and harming the retina, causing swelling and blurred vision. Those with diabetes can also develop glaucoma or cataracts at an earlier age.

If untreated, diabetes-related eye conditions can lead to retinal detachment, glaucoma, partial vision loss or blindness. We help those with diabetes manage their diabetic eye care by offering an annual eye exam and monitoring their specific eye care needs.

Cataract surgery

Cataracts are a common eye condition in older adults, causing the lens of your eye to cloud and blur your vision. This condition is different from nearsightedness or farsightedness and cannot be treated with glasses, contacts or LASIK surgery.

In cataract surgery, the damaged lens is replaced with an artificial one. Because cataracts are so common, the procedure has become advanced, is safe and success rates are very high.


Glaucoma is a disease that damages the optic nerve, which connects the eye to the brain. The primary risk factor for glaucoma is elevated eye pressure. There are a variety of types of glaucoma, and it typically affects peripheral vision first, which is why it's usually asymptomatic until the later stages. Because of this, periodic testing is done to ensure glaucoma is not developing or progressing.

We offer glaucoma screenings and subsequent treatments if needed.

SLT – Selective Laser Trabeculopasty

SLT is a painless laser procedure, using short pulses of low-energy light to target specific cells of the affected eye to lower eye pressure, and can be performed in our office. SLT is used when eye drop medications are not lowering the pressure enough or are causing significant side effects. It can also be used as an initial treatment for glaucoma.

YAG Capsulotomy – Laser Procedure

The YAG laser clears the “frosting” from the back surface of an intraocular lens. A cataract is a bit like an M&M – with an outer coating capsule and an inner nucleus. Over time the capsule can develop a layer of new cells that form a frosting on the back surface of the lens and can occur in about 10% of patients after cataract surgery. The YAG laser helps eliminate the frosted cells, helping restore eyesight.

Please contact us at 406.363.5434 for more information or to schedule an appointment.