Pregnancy can bring changes you expect, such as tiredness and morning sickness, along with a few you may not. Blurry vision, dry or irritated eyes, contact lenses that suddenly feel uncomfortable, or a prescription that seems less reliable can all happen. This vision changes during pregnancy guide explains why these shifts occur, when they can wait for a routine appointment, and when they need prompt medical attention.
For most people, mild visual changes are temporary. However, your eyes can also provide an early warning of conditions that need urgent care, including high blood pressure and diabetes in pregnancy. If something feels sudden, severe or simply not right, it is always sensible to have it assessed.
Why can pregnancy affect your eyesight?
Hormonal changes affect fluid levels throughout the body, including the eyes. This can slightly alter the thickness and curvature of the cornea, the clear front surface of the eye. Even a small change may affect how light focuses in the eye, causing temporary blur or a change in your glasses prescription.
Pregnancy can also affect the tear film, the protective moisture layer over the front of the eye. When this layer is unstable, eyes may feel gritty, watery, burning or sensitive to light. Vision can fluctuate through the day, especially after screen use, in air conditioning, or when you are tired.
These changes often settle after delivery, although timing varies. If you are breastfeeding, hormone-related changes may continue for longer. That is one reason a non-urgent update to glasses or contact lenses is sometimes best postponed until vision has stabilised. It depends on how much your sight has changed and how much it is affecting daily life, work, driving or caring for your family.
Common vision changes during pregnancy
Mild, gradual symptoms can be common, particularly later in pregnancy. They still deserve attention if they are persistent, uncomfortable or interfering with your usual activities.
Fluctuating or blurry vision
You might notice that your current glasses do not seem as sharp as they used to, or that reading, using a computer or looking into the distance is intermittently blurry. Fluid changes in the cornea and dry eye can both contribute. A comprehensive eye examination can help determine whether the issue is likely to be temporary or whether another eye condition needs to be considered.
Dry, itchy or watery eyes
Dry eye does not always mean eyes feel dry. Some people experience excess watering because irritation triggers reflex tears. Contact lens wear can become less comfortable, with lenses feeling dry, tight or more noticeable than usual.
Taking regular screen breaks, blinking fully and avoiding direct air flow from fans or car vents can help. Lubricating eye drops may also provide relief, but ask your optometrist, pharmacist, GP, midwife or obstetrician which option is suitable during pregnancy. Do not assume all redness-relief drops are appropriate for regular use.
Contact lens discomfort
A slight change in corneal shape, dry eye or eyelid swelling can alter how a contact lens sits on the eye. Reducing wearing time, taking a break from lenses, or using glasses more often may be the most comfortable approach. If a lens becomes painful, your eye is red, or vision remains blurred after removing it, arrange an urgent eye assessment rather than trying to push through discomfort.
Changes in existing eye conditions
Pregnancy can influence conditions such as dry eye, diabetic eye disease and high blood pressure-related eye changes. If you already see an ophthalmologist or optometrist for an eye condition, let them know you are pregnant. Your care plan may need to be reviewed, even if your symptoms seem unchanged.
When blurred vision could be a warning sign
Not every visual symptom in pregnancy is caused by normal hormonal changes. Sudden or significant changes in vision require prompt medical advice, particularly when paired with other symptoms.
Seek urgent assessment from your maternity care provider, GP, emergency department or eye care professional if you experience sudden blurred or double vision, flashing lights, a new shower of floaters, a dark curtain or shadow in your vision, loss of part of your visual field, severe eye pain, or a red painful eye.
Visual disturbances can also occur with pre-eclampsia, a potentially serious pregnancy complication involving raised blood pressure. Contact your maternity care team urgently if visual changes occur with a severe or persistent headache, pain under the ribs or in the upper abdomen, sudden swelling of the face or hands, shortness of breath, nausea or vomiting later in pregnancy, or feeling generally unwell.
If you have sudden vision loss, severe headache or other serious symptoms, seek emergency medical help straight away. Do not drive yourself if your vision is affected.
Diabetes in pregnancy and eye health
Gestational diabetes does not automatically mean you will develop an eye condition. Still, changes in blood glucose can cause temporary shifts in vision, often making it difficult to judge whether a new glasses prescription is needed. If you have pre-existing type 1 or type 2 diabetes, pregnancy can increase the need for careful retinal monitoring because diabetic eye disease may progress more quickly.
A dilated retinal examination allows your optometrist or ophthalmologist to assess the blood vessels and retina at the back of the eye. Your eye care provider will discuss the purpose of any drops or tests and work with your GP, endocrinologist, obstetrician or maternity team where appropriate. Coordinated care matters because clear vision is only one part of protecting your overall health during pregnancy.
Can you have an eye test while pregnant?
Yes. A routine eye examination is generally appropriate during pregnancy, especially if you have new symptoms, diabetes, high blood pressure, a history of eye disease, or you are struggling with your vision. Tell the optometrist you are pregnant and how far along you are, as this helps guide your care.
Your assessment may include a discussion of symptoms and medical history, vision testing, an eye pressure check, and an examination of the front and back of the eyes. If dilation drops or any treatment are being considered, your clinician can explain the expected benefit and any relevant precautions. The right approach is individual, based on your symptoms and health history.
For a simple, mild prescription change, some patients choose to wait until after pregnancy or breastfeeding before purchasing new glasses. But waiting is not always practical. If clear vision is affecting safe driving, your work, reading, or your ability to care for a child, a temporary update may be worthwhile. An eye examination gives you the information to make that decision with confidence.
Looking after your eyes day to day
Small habits can make a genuine difference when dry or fluctuating vision is part of your pregnancy experience. Keep well hydrated, take breaks from close work, and make a point of blinking during phone or computer use. Sunglasses with good UV protection can reduce glare and light sensitivity outdoors.
If you wear contact lenses, keep hands clean, follow the replacement schedule, and never sleep in lenses unless they were specifically prescribed for overnight wear. Stop wearing lenses and seek advice if you develop pain, increasing redness, discharge or light sensitivity. Eye infections and corneal problems need timely treatment, particularly during pregnancy when it can be tempting to put your own care last.
Avoid using leftover prescription eye drops or borrowing drops from another person. Treatments that are suitable for one eye problem may be unhelpful, or even harmful, for another.
A local eye assessment when you need reassurance
An eye examination is not only about updating a prescription. It is an opportunity to check eye comfort, assess the health of the retina and optic nerve, and understand whether your symptoms fit with normal pregnancy changes or need further investigation. At Boda Family Eye Care, we can assess new visual symptoms carefully and communicate with your GP, obstetrician or eye specialist when coordinated care is needed.
You know your usual vision better than anyone. If reading signs has become harder, your eyes are persistently uncomfortable, or you have noticed a sudden change, booking an assessment can provide clarity and reassurance at a time when there is already plenty to think about.