Common Symptoms That Could Signal Macular Degeneration

As we age, keeping our vision clear and healthy becomes a top priority. At Northwest Eye Specialists in Houston, Texas, board-certified ophthalmologist Rana Ghauri, MD, diagnoses and treats progressive eye conditions.

One of the most common causes of vision loss in older adults is age-related macular degeneration (AMD). AMD damages the macula, which is the small, central part of the retina responsible for sharp, straight-ahead vision. Because early AMD often develops without noticeable symptoms, regular eye exams are important for detecting changes before significant vision loss develops.

Early Detection & Symptoms

Can trouble seeing in low light be a sign of macular degeneration?

Early dry AMD is generally asymptomatic. As the condition progresses to the intermediate stage and beyond, however, some people may notice trouble seeing in low light, along with changes such as mild blurriness in their central vision. Research suggests that rod-mediated dark adaptation — the eyes’ ability to adjust from bright conditions to darkness — may change before standard visual acuity does.

In a 2026 ALSTAR2 longitudinal study published in Translational Vision Science & Technology, rod-mediated dark adaptation showed the greatest clinically meaningful change over three years among the visual functions tested. Across groups that included older adults with normal macular health, early AMD, and intermediate AMD, 38% to 55% of eyes reached the threshold for clinically meaningful change in dark adaptation, compared with 0% to 10% for visual acuity and photopic contrast sensitivity.

Monitoring Visual Changes

Why isn't the Amsler grid enough to monitor for wet AMD?

The Amsler grid is a simple paper grid designed to show if straight lines look wavy or distorted, but it frequently misses early signs of progressive disease.

A comprehensive meta-analysis (JAMA Ophthalmology, 2023) found that the Amsler grid has a sensitivity of 71% when trying to distinguish neovascular (wet) AMD from dry AMD. This means the test misses nearly 29% of neovascular cases. Furthermore, this study evaluated supervised Amsler testing rather than typical unsupervised home use. Relying solely on a paper grid provides a false sense of security, which is why professional imaging is necessary to properly monitor your eye health.

What to Expect & Next Steps

Receiving a diagnosis of macular degeneration can feel overwhelming, but it's important to know that AMD doesn't lead to complete, pitch-black blindness. The disease only affects your central vision, meaning your peripheral (side) vision will remain intact.

Early detection is your best defense, and our team is here to help you every step of the way. If you're noticing changes in your night vision or want to schedule a preventive screening, please contact our team at Northwest Eye Specialists today to schedule an appointment.