The Corneal Light Reflex Test and What It Checks Somewhere in most eye exams, and in a lot of pediatric checkups, someone shines a small light at the patient's face and watches for a couple of seconds. That quick step has a name: the corneal light r... Eye Tests Vision Screening Visual Acuity Jun 24, 2026
Which Eye Is Your Dominant Eye, and Why It Matters You use both eyes constantly, but your brain does not treat them as equals. When the two views disagree even slightly, one eye usually gets the final word. That eye is your dominant eye. It is a small... Eye Tests Vision Screening Visual Acuity Jun 15, 2026
Inside the Schirmer Test: How Doctors Measure Tears If your eyes burn, sting or feel gritty by mid-afternoon, an eye doctor will want to know whether you are actually making enough tears. Symptoms alone cannot answer that, because a dry eye and an over... Eye Tests Vision Screening May 31, 2026
Gonioscopy: A Close Look at Your Eye's Drainage Angle An eye pressure reading tells you what the pressure is right now. It does not tell you why, and it does not tell you what could happen if things change. For that, an eye doctor needs to look at the pl... Eye Tests Vision Screening May 10, 2026
How a Home Eye Chart Works and What It Cannot Tell You A wall of shrinking letters is the picture most people carry around of an eye test. It is old, simple, and it does measure something real. It is also the smallest piece of what happens in an exam room... Eye Tests Vision Screening Visual Acuity May 7, 2026
The Amsler Grid: A Home Check for Central Vision An Amsler grid is one of the plainest tools in eye care: a square of evenly spaced lines with a dot in the middle. You look at the dot, one eye at a time, and notice whether the lines around it still ... Eye Tests Vision Screening Visual Field Apr 30, 2026
What an Online Vision Test Can and Cannot Tell You Vision checks that run in a web browser are easy to find now. You sit a set distance from the screen, read letters that shrink line by line, tap what you can make out, and get a result in minutes. Whe... Eye Tests Vision Screening Visual Acuity Apr 13, 2026
Retinal Imaging at Your Eye Exam: What It Shows You check in for an eye exam and the person at the desk asks whether you would like retinal imaging today, usually for an extra fee, usually with the word "optional" attached. It is a fair question ba... Eye Tests Vision Screening Mar 31, 2026
A Map of Your Eye Exam: What Each Test Checks An eye exam can feel like a series of unrelated gadgets. You read letters, you rest your chin on something, a light shines in, a puff of air arrives without warning, and then someone tells you your ey... Color Vision Eye Tests Visual Acuity Visual Field Mar 27, 2026
OCT Eye Scans: What They Show and Why They Cost Extra Your eye doctor mentions a scan, someone leads you to a machine in a side room, and a few minutes later there is a color-striped picture of the inside of your eye on a screen. Then a charge for it tur... Eye Tests Vision Screening Visual Field Mar 22, 2026
What a Visual Field Test Shows About Your Side Vision Peripheral vision is the part of sight nobody thinks about until it starts going. It catches movement at the edge of a room, the curb beside your foot, the car easing into the next lane. The unsettlin... Eye Tests Vision Screening Visual Field Mar 19, 2026
What a Home Vision Self-Check Can and Cannot Tell You Plenty of people notice something odd about their vision and want a quick way to check it before booking anything. Maybe road signs got fuzzy, or one eye seemed dimmer when you happened to cover the o... Color Vision Eye Tests Vision Screening Visual Acuity Mar 17, 2026