Cataract Evaluations 

Cataract Evaluations in Havre and Chinook

Cataracts are the most common cause of treatable vision loss in adults over 60, and they develop gradually enough that many people do not realize how much their vision has changed until the condition is well advanced. At Chinook Eye Center, Dr. Perez monitors for cataracts during every comprehensive eye exam and provides detailed evaluations when lens changes begin to affect your daily life.
Detailed view of a cloudy eye lens, showing a cataract, for eye exam and cataract evaluation

What Is a Cataract?

A cataract forms when the natural lens inside your eye, a clear, flexible structure that focuses light onto your retina, gradually becomes cloudy. Proteins in the lens break down over time and clump together, creating areas of opacity that scatter incoming light instead of focusing it sharply. The result is vision that becomes progressively hazy, dim, or washed out.

Wet AMD (Neovascular)

Wet AMD is less common but far more aggressive. It develops when abnormal blood vessels grow beneath the retina and leak blood and fluid into the macula, causing rapid distortion and vision loss. Wet AMD can develop suddenly from dry AMD that has been stable for years, which is why ongoing monitoring is essential even when your dry AMD appears unchanged. When caught early, wet AMD can be treated with anti-VEGF injections administered by a retinal specialist.

Most cataracts develop as a natural part of aging, but several factors can accelerate them:

Signs You May Be Developing Cataracts

How We Evaluate Cataracts

Dr. Perez uses a combination of advanced diagnostic tools to assess the degree and location of lens changes and determine how they are affecting your functional vision:

Optomap Retinal Imaging

Captures a wide-field view of your retina and internal eye structures without dilating drops. This helps Dr. Perez evaluate both the cataract and the overall health of the eye behind it.

Slit Lamp Exam

A high-magnification microscope allows Dr. Perez to examine the lens directly and identify the type, location, and density of the cataract, whether it is a nuclear sclerotic cataract affecting the center of the lens, a cortical cataract developing at the edges, or a posterior subcapsular cataract forming at the back of the lens.

Visual Acuity Testing

Determines how much functional vision loss the cataract is causing and whether an updated prescription can still compensate.

Glare Testing

Evaluates how much your vision is affected by bright light and glare, a common complaint that standard acuity charts do not capture.

When Is It Time for Cataract Surgery?

Not every cataract requires surgery. In the early stages, an updated eyeglass prescription, better lighting, and anti-glare coatings may be enough to maintain comfortable vision. Dr. Perez will help you understand where you are on the spectrum and have an honest conversation about when the cataract is affecting your quality of life enough to consider surgical removal.

When the time comes, cataract surgery is one of the most commonly performed and successful procedures in medicine. The clouded natural lens is removed and replaced with a clear artificial intraocular lens. The procedure is outpatient, typically takes 15 to 30 minutes, and recovery is quick. Dr. Perez will refer you to a trusted ophthalmologist for the surgery and continue managing your eye care before and after.

Living in Montana with Cataracts

Montana’s intense sunlight and high UV exposure at elevation contribute to cataract development. If you spend your days outdoors, whether ranching, fishing, hunting, or driving rural highways, UV-protective sunglasses are one of the simplest things you can do to slow cataract progression. Dr. Perez can advise you on protective eyewear options tailored to your lifestyle and activities.
Smiling senior woman undergoing a vision test with an occluder at an eye clinic near me.

Schedule Your Cataract Evaluation

If your vision is not as clear as it used to be, it may be time for a cataract evaluation. Call Chinook Eye Center at (406) 357-3740 to schedule your appointment in Havre or Chinook.