I Missed My Eye Injection Appointment: How Serious Is It?
What to Do Right Now About a Missed Eye Injection
Most missed injections are not an emergency. A few signs are. Call your eye doctor the same day, or use an emergency room if you cannot reach the clinic, for any of these:
- Severe eye pain, or pain that keeps getting worse.
- A red eye with light sensitivity.
- Sudden vision loss, or a fast drop in sight over a day or two.
- Decreased vision with new floaters after a recent injection.
- A dark curtain or shadow moving across your sight.
Signs that suggest an infection inside the eye after an injection, or a retinal detachment, need prompt evaluation1. Both are uncommon, and both are treatable when they are caught early. If none of this fits you, read on. A missed visit is then a scheduling problem, not an emergency.
Missing a single injection by days or a few weeks is common, and the evidence is reassuring about short gaps. In one group whose gap between visits stretched to an average of about 103 days, vision dipped by about 4 letters on an eye chart, close to the 3 letters lost by patients who stayed on a roughly 42-day schedule, and by 6 months there was no significant difference between the two groups2.
Long absences are a different story, and the difference is a matter of months rather than weeks. The single most useful thing you can do today is book the next available slot.
First, call the retina clinic and say plainly that you missed an injection and want the earliest appointment. Second, tell them if your vision has changed since the last visit, because that usually moves you up the list. Third, check each eye on its own, covering the other, so you can describe any change accurately.
If you cannot get through by phone, use the clinic's patient portal or ask your regular eye doctor's office to contact them for you. Persistence here is worth more than perfect timing.
What These Injections Are and Why They Run on a Schedule
These are injections of medicine into the jelly of the eye, given in the clinic. They are used for age-related macular degeneration, diabetic retinopathy and retinal vein occlusion, and they usually need to be repeated in these long-term conditions3. In wet macular degeneration, abnormal blood vessels grow at the back of the eye and damage the macula, and anti-VEGF injections are the treatment4.
Common medicines in this group include aflibercept and ranibizumab. Your clinic chooses among them based on your condition, your response and your insurance.
These medicines block vascular endothelial growth factor, the signal that drives fragile vessels to grow and leak, and injecting them into the eye is the first-line treatment for wet macular degeneration1. Blocking that signal dries up the leak and settles the swelling. The medicine then clears from the eye over the following weeks, and the signal it was blocking can return.
That is the whole reason for the schedule. The injections are not a course you finish; they are a level you keep topped up, which is why the calendar matters as much as the medicine.
Follow-up visits are typically about 4 to 6 weeks after an injection3, and your own interval is then adjusted from what your scans show, since scans are used to detect new or recurrent disease activity and to guide treatment1. Some people are stretched to longer gaps over time. Others need to stay tight.
So the date on your card is a personal finding, not a generic default. It is worth asking your retina team what your interval is based on, because it tells you how much slack you actually have.
How Much a Delay Actually Costs Your Vision
Short gaps usually cost little, provided you come back. In the interrupted group described earlier, about 47 in every 100 patients had worsening disease on return and were given intensified rescue treatment, and vision was stable at 6 months2. In that cohort the delay was mostly absorbed by more treatment rather than by permanent loss.
That is the honest, encouraging half of the picture. It is also the reason to rebook rather than to give up on a schedule you have already broken.
Long absences are where the real damage sits. Among 93 eyes with wet macular degeneration that went more than 6 months without follow-up, an average of about 346 days, median vision fell from about 20/80 before the gap to about 20/200 at the return visit, and was still about 20/200 at the final visit despite restarting injections5.
Read that carefully, because it is the key point of this page: the swelling settles again with treatment, but the sight lost during a long gap often does not come back. Weeks are usually forgivable. Months frequently are not, which is why today's phone call matters more than a tidy schedule.
The stakes are not identical for everyone. In a small series where starting treatment was delayed about 6 months, vision was not adversely affected in eyes with diabetic macular edema and non-proliferative diabetic retinopathy, while the authors concluded that starting doses for wet macular degeneration and retinal vein occlusion should be given as soon as possible6.
Treat that as a general pattern from a small study, not as permission. Ask your own clinic where your condition sits, since the answer changes how hard you should push for an early slot.
Who Is Most Likely to Fall Off Schedule
People starting treatment appear to have the least room to slip, since one small series concluded that starting doses for wet macular degeneration and retinal vein occlusion should be given as soon as possible6. Similar caution is worth applying if your scans still show fluid at each visit, if the treated eye is your better eye, or if your interval has recently been shortened.
If any of that describes you, ask the clinic for a cancellation list or a reminder call. Ask before you miss a visit rather than after.
If your intervals have been stretched because your scans have stayed dry, your clinic may be comfortable rebooking you within a few weeks rather than a few days. That does not make a missed visit harmless, and it is not something to assume on your own behalf.
Only your retina team can tell you which group you are in, and the answer can change from visit to visit.
Falling off schedule is common and it is rarely carelessness. Of 9,007 patients receiving these injections for wet macular degeneration, 2,003, or about 22 in every 100, had at least one full year with no follow-up visit, and the odds were higher with older age, living further from the clinic, lower area income, and injections in only one eye7.
Those are transport, money and stamina problems, not motivation problems. Naming yours to the clinic often unlocks practical help, such as a different site, a longer interval, or transport advice.
When Your Clinic Postpones the Injection on Purpose
Not every postponed injection is a mistake. Clinics sometimes move a dose themselves, for example when the scan shows the eye has settled and the interval can be extended, or when something on the day makes injecting unwise. Scans are used to detect new or recurrent disease activity and to guide when treatment is given1.
If your appointment was moved by the clinic rather than by you, ask what the reason was and when the next dose is due. A deliberate delay comes with a plan; a missed one does not.
Being generally unwell, for example with a fever or a chest infection, is a reasonable reason to call rather than attend. So is a new red or sticky eye, which the clinic will want to look at before injecting.
Do not simply skip. Call, explain, and let the clinic decide whether to move you or to see you anyway. That single call turns a missed visit into a planned one.
Tell your retina team about a recent stroke or heart attack, or if you are pregnant or breastfeeding. These treatments carry a theoretical risk of clot-related events, though trial results on that question remain inconclusive, and the risks in pregnant or breastfeeding women have not been studied1.
The same goes for a planned operation, a new eye condition or eye surgery elsewhere. Your retina clinic can only account for what it knows about.
What to Say When You Call to Rebook
Lead with the facts that determine urgency: the date of your last injection, the condition being treated, which eye, and whether your vision has changed since you were last seen. Mention if the treated eye is your better eye.
Clinics triage on exactly this information. Offering it up front is the difference between the next open slot and a call-back next week.
Ask what the scan shows compared with your last one, whether the plan is changing, and how many injections are expected before the interval can stretch again. Ask what would happen if you missed another.
Write the answers down. A gap in treatment is a good moment to rebuild your understanding of the plan, not just to receive one more dose.
Expect the possibility of a tighter schedule for a while. It is common to be brought back to monthly injections for a few doses to resettle the eye before intervals are stretched again.
That is not a punishment or a sign of failure. It is how these treatments recover ground after an interruption.
What to Expect at the Catch-Up Injection and After
Expect a vision check, drops to widen the pupil, a scan of the macula, then the injection itself with numbing drops and a cleaning solution. The injection takes about 10 to 15 minutes, and there are usually no restrictions afterwards apart from keeping the eye clean that day3.
Bring sunglasses and, if the drops leave you blurry, arrange a lift home. Most people go back to normal activity the same evening.
A gritty feeling, as though something is in the eye, is common afterwards and comes from the cleaning solution rather than the needle3. A small red patch on the white of the eye is also normal and fades over a week or two. Mild scratchiness usually settles within a day or two.
Artificial tears help. Discomfort that is steadily improving is the pattern you want to see.
The pattern that matters is discomfort that gets worse rather than better after the first day. Increasing pain, increasing redness, new light sensitivity, a shower of new floaters, or dropping vision belong in a phone call to the clinic, not in a wait-and-see.
Symptoms suggesting infection inside the eye after an injection, or a retinal detachment, need prompt evaluation1. Calling early is inexpensive, and it is what the clinic expects you to do.
Risks, Realistic Outcomes and What Cannot Be Undone
The two studies above point in different directions for different gaps. After an interruption of around 3 months, vision was stable again by 6 months2. After more than 6 months away, the retinal thickness returned toward normal with treatment while the vision did not recover5.
Both facts are worth holding at once. Restarting is better than not restarting, and returning sooner protects more.
Injections into the eye can cause infection inside the eye, non-infectious inflammation, or a retinal tear or detachment, and in the aflibercept trials the cumulative rate of infection inside the eye was about 1 in every 100 patients or lower over a year1. Severe complications are very rare3.
Set that against the cost of an untreated leak, which is measured in lost letters rather than in rare events. Both risks are real, and those numbers are what your clinic weighs when it urges you not to miss visits.
If you have missed one visit, you are in a very common situation with a good outlook. If you have been away for months, some loss may already be permanent, and treatment now is about protecting what remains rather than recovering what has gone.
Macular degeneration is a leading cause of vision loss in older adults, but it does not cause complete blindness4. Even after a long gap, there is something worth protecting.
When to Call Your Retina Clinic
Some changes should not wait for a rescheduled appointment. Contact the clinic urgently, or seek emergency care if you cannot reach anyone, for:
- A sudden drop in vision in either eye.
- A new blind spot, or straight lines that suddenly look bent.
- Eye pain that is severe or worsening.
- A red, light-sensitive eye after a recent injection.
- A curtain, shadow or shower of new floaters.
Straight lines that start to look wavy are a warning sign of late macular degeneration4, and in wet macular degeneration, early detection and prompt treatment improves the visual outcome1. Saying these words on the phone helps the clinic judge how quickly you need to be seen.
With no new symptoms, the right move is a prompt call rather than an emergency one. Aim to be rebooked within days to a couple of weeks, and ask to be put on a cancellation list.
If the clinic offers you a date far in the future, say how long it has been since your last injection and ask whether that is acceptable for your condition. It is a fair question, and it often produces a better date.
Your retina clinic is the right first call, not your family doctor or an optician, because they hold your scans and your treatment plan. Out of hours, an emergency department or urgent eye service covers the same-day signs listed above.
Keep the clinic number in your phone and your last injection date written down. Both save time on the day you need them.
Common Questions About Missed Eye Injections
There is no single cut-off, but the pattern in the evidence is that weeks are usually recoverable and months often are not. Eyes away for more than 6 months lost vision that did not return despite restarting treatment, while an interruption of roughly 3 months was largely absorbed by extra doses. Ask your clinic for your own limit, since it depends on your condition and how dry your scans have been.
Usually not from one missed visit, especially if you rebook quickly. In studied groups with interruptions of around 3 months, vision dipped a few letters and then held steady once injections resumed. The risk rises with the length of the gap, not with the fact of missing a single appointment. Call now, describe any change in your vision, and take the earliest slot offered.
Better to call rather than to wait quietly. Your clinic may want to see you sooner, may want a scan first, or may be entirely comfortable with the original date. Only they can tell, because it depends on how active your condition has been. A two-minute phone call replaces weeks of worry and occasionally catches a problem early.
Partly, and it depends on the length of the gap. Swelling and leakage usually respond again to treatment, and scans often return close to normal. Vision lost during a long absence frequently does not recover, which is what was seen in eyes away for more than 6 months. That is why returning sooner matters more than returning perfectly prepared.
Say so directly, because this is one of the most common reasons people fall off schedule and clinics have practical answers. Distance from the clinic and lower income are both linked with dropping out of follow-up. Ask about a closer site, help with transport, longer intervals where safe, and any financial assistance for the medicine. These conversations are routine.
No. A late injection is far better than a skipped one, and there is no penalty for arriving off schedule. Your team may add extra doses at shorter intervals to resettle the eye, then stretch the gaps again. The injection works the same way after a delay; the difference is that there may be more disease activity to bring back under control.
More Questions About Getting Back on Schedule
Yes, and this is the trap. These conditions can leak quietly, and fluid often shows on a scan before you notice anything. Feeling fine is a good sign but not a reliable one, particularly if your other eye sees well and covers the gap. Keep the appointment, and keep checking each eye separately at home.
Cover one eye, look at something with straight lines such as a door frame or a window, then repeat with the other eye. Note any bending, blurring or missing patch, and compare with what you saw last time. An Amsler grid from your clinic makes this easier. Report new changes rather than waiting for the next visit.
Possibly, and that is normal practice. After an interruption, clinics often give several injections at shorter intervals to dry the eye before extending again. In one interrupted group, nearly half needed intensified treatment on return. Think of it as reloading rather than starting over, and ask how many doses are planned before the interval is reassessed.
It is a reasonable conversation to have, and it is better than silently missing visits. Longer intervals are generally considered when scans have stayed dry, and are a harder call when there is still leakage. Bring the practical problem to the clinic, whether it is transport, work or cost, and ask what the safest interval is for your eye. A plan you can keep beats an ideal one you cannot.
A short list makes the catch-up visit more useful. Consider asking:
- How long has it been since my last injection, and does that gap concern you?
- What does my scan show compared with last time?
- Am I likely to have lost vision permanently, or is this recoverable?
- How many injections do you expect before we stretch the interval again?
- What is the longest gap that is safe for my eye?
- What symptoms should make me call you before my next appointment?
- American Academy of Ophthalmology, Retina/Vitreous Preferred Practice Pattern Panel (2022). Age-Related Macular Degeneration Preferred Practice Pattern (2022 update).
- Peer-reviewed observational cohort, 215 delayed versus 83 on-schedule patients (PMC10107548) (2023). Delaying anti-VEGF therapy during the COVID-19 pandemic: long-term impact on visual outcomes in patients with neovascular age-related macular degeneration.
- American Society of Retina Specialists, patient information (2024). Intravitreal Injections.
- National Eye Institute, National Institutes of Health (2024). Age-Related Macular Degeneration (AMD).
- Ophthalmology Retina (Soares RR, Mellen P, Garrigan H, et al.), retrospective series of 93 eyes (2020). Outcomes of Eyes Lost to Follow-up with Neovascular Age-Related Macular Degeneration Receiving Intravitreal Anti-Vascular Endothelial Growth Factor.
- Peer-reviewed retrospective series of 55 treatment-naive eyes (diabetic macular edema, retinal vein occlusion, wet AMD) (2021). The impact of delayed anti-vascular endothelial growth factor treatment for retinal diseases during the COVID-19 lockdown.
- JAMA Ophthalmology (Obeid A, Gao X, Ali FS, et al.), retrospective cohort of 9,007 patients (2018). Loss to Follow-up Among Patients With Neovascular Age-Related Macular Degeneration Who Received Intravitreal Anti-Vascular Endothelial Growth Factor Injections.