A telehealth eye exam connects you with an eye care provider through video chat or a self-guided online tool to check your vision and, in some cases, screen for common eye problems. The process varies depending on whether you’re doing a live video consultation with a doctor or using an automated online vision test to renew a glasses prescription. Both have real uses, but neither fully replaces an in-person comprehensive exam.
Two Types of Telehealth Eye Exams
The term “telehealth eye exam” covers two distinct experiences. The first is a live video visit with an optometrist or ophthalmologist, where the doctor evaluates your eyes in real time using your phone or computer camera. The second is a self-administered online vision test, where software walks you through a series of screens to estimate your prescription for glasses. These serve different purposes, and knowing which one you’re signing up for matters.
A live video visit is closer to a traditional office appointment. You’ll discuss symptoms, show the doctor your eyes on camera, and possibly perform simple tests at home under their guidance. An online vision test, by contrast, is a solo experience focused narrowly on measuring how well you see at a distance. It won’t check your eye health.
What Happens During a Live Video Visit
During a live video consultation, a provider sees you through a platform like FaceTime, Google Duo, or a clinic’s own telehealth portal. At Cleveland Clinic’s Cole Eye Institute, ophthalmologists have seen up to 10 patients per day this way. The visit typically follows a structured flow.
First, you’ll describe your symptoms or concerns, just like you would in an office. Then the doctor will ask you to position your camera close to your eyes so they can examine your eyelids, lashes, and the front surface of your eye. If you have a flashlight, the doctor may guide you in swinging it back and forth across each eye so they can observe how your pupils respond. This simple test checks basic neurological function. The video quality on modern smartphones is often good enough for the doctor to diagnose many common problems: red eye, dry eye, styes, allergic reactions, and broken blood vessels on the white of the eye.
For visual acuity, you may be directed to an at-home eye chart from the American Academy of Ophthalmology’s website. You print it out, tape it to a wall, stand 10 feet back, and read the letters while the provider watches or you report your results. The doctor then documents their findings, discusses a care plan, sends any prescriptions to your pharmacy, and schedules follow-up visits if needed.
How Online Vision Tests Work
Online vision tests are a separate category. These are self-guided software tools you access through a phone and computer at home, usually taking 10 to 20 minutes. You’ll typically need two devices: a smartphone to use as a remote control and a computer screen to display letters or symbols at a set distance. The software instructs you to stand a specific distance from the screen (often around 10 feet) in a well-lit room, then cover one eye at a time and identify letters, numbers, or the direction of shapes.
Some services use more advanced approaches. Smartphone-based refraction tools use optical adapters that let you adjust lenses while looking through the device, dialing in your correction yourself. Other systems place automated refraction equipment in retail locations so a prescription can be generated without a doctor physically in the room, while an eye care provider reviews the data remotely.
One product, the Visibly Digital Acuity Product, received FDA clearance as a web-based self-guided tool for measuring visual acuity. It is specifically intended for adults aged 22 to 40 who can perform a self-test at home using a touchscreen mobile device and an internet-connected computer.
How Accurate the Results Are
For people who are nearsighted, online refraction tools perform reasonably well. A large study of nearly 14,700 eyes found that 67% of nearsighted participants got results within half a diopter of a traditional in-office measurement, and 82% were within three-quarters of a diopter. Half a diopter is roughly the threshold where most people would notice a meaningful difference in their glasses.
For farsighted people, accuracy drops significantly. Only 34% fell within that half-diopter range, and the software correctly identified farsightedness as a diagnosis in just 44% of cases. When the analysis corrected for certain sign errors in how farsightedness was reported, accuracy improved: 57% of farsighted participants then landed within half a diopter. Still, the gap between nearsighted and farsighted results is substantial, and it means online tools are considerably less reliable if you tend to struggle with up-close vision.
Who Can Use an Online Vision Test
The American Academy of Ophthalmology says online vision tests may be appropriate for healthy adults between 18 and 39 years old who already have a mild or moderate glasses prescription and no symptoms of eye disease. That’s a narrow group. You’re not a good candidate if you have diabetes, a family history of glaucoma, any existing eye condition, or if you haven’t had a comprehensive in-person exam recently. People over 40 are also excluded from most online testing platforms, partly because age-related eye changes (like the gradual loss of close-up focusing ability) require more than a distance vision check.
Online tests are designed for prescription renewals, not first-time exams. They work best for someone who already knows their eyes are healthy and just needs updated numbers for a new pair of glasses.
What Telehealth Cannot Check
The biggest limitation of any telehealth eye exam is that no one can look inside your eye remotely. A comprehensive in-person exam includes dilating your pupils with drops so the doctor can directly examine your retina and optic nerve, the structures at the back of the eye where diseases like glaucoma, macular degeneration, and diabetic eye damage are detected. This step is impossible through a screen.
A remote exam also can’t measure the pressure inside your eye (a key glaucoma screening tool), assess your near vision or eye coordination in detail, or perform slit-lamp microscopy, which gives a magnified cross-sectional view of the structures at the front of your eye. Vision screening using only distance charts also misses problems with close-up focus and eye movement disorders. As one summary from WebMD notes, an incomplete vision screening may give a false sense of security and delay the detection of serious conditions.
How the Doctor Reviews Your Results
In a live video visit, the doctor assesses you in real time and makes decisions on the spot, similar to an office visit. With asynchronous services (where you complete tests on your own and the data is sent to a provider later), an optometrist or ophthalmologist reviews the results before signing off on any prescription. In some comanagement models, an optometrist collects images or test data at a local clinic and sends them to an ophthalmologist at another location for interpretation. The ophthalmologist determines the care plan, and the optometrist communicates it to you and handles follow-up.
This collaborative model is common in diabetic eye screening programs and rural eye care, where patients may not have easy access to a specialist. The key point is that a licensed provider is always supposed to review the data before you receive a prescription or diagnosis.
What You Need at Home
For a live video visit, you need a smartphone, tablet, or computer with a working front-facing camera, a stable internet connection, and a quiet, well-lit room. Having a simple flashlight nearby helps, since the doctor may ask you to use it during the pupil exam. If you’re asked to test your own visual acuity, you’ll need a printer to produce the eye chart and enough space to stand about 10 feet from it.
For a self-guided online vision test, the setup requirements vary by service but generally include a smartphone and a separate computer screen, a measuring tape to set your distance from the screen correctly, and a room with consistent lighting. Some services provide specific instructions for screen brightness settings to ensure the test displays correctly.