Tag Archives: Geometrical

Eye disease signs and risk factors — Dr. Ivey Thornton ophthalmology

Signs and Risk Factors for Eye Disease

Eye disease rarely announces itself. The conditions responsible for most adult vision loss — glaucoma, age-related macular degeneration, diabetic retinopathy — develop silently over months or years. By the time patients notice symptoms, real and often irreversible damage has frequently occurred. Knowing the signs and risk factors that warrant attention is the most useful screening tool a patient has. Routine eye exams catch what symptoms miss. But knowing what to watch for between exams matters. Symptoms that warrant prompt evaluation…

Visual field testing for low vision — Ivey Thornton, MD ophthalmology

Visual Field Testing for Low Vision

Visual field testing — the formal mapping of what each eye can see across its full range — is one of the most useful diagnostic tools in ophthalmology, and especially in low vision evaluation. For patients with macular degeneration, glaucoma, stroke, or other conditions affecting parts of the visual field, perimetry quantifies what's gone, what remains, and how to make the most of remaining vision. What a visual field test actually measures The eye has a wide field of view…