Dry eyes
A gritty, burning or tired sensation in the eyes from too few or poor-quality tears. Usually caused by screen use, age, contact lenses or environment — but persistent dryness, especially with a dry mouth, can point to the autoimmune condition Sjögren's.
What it means
Dry eye happens when the eyes do not make enough tears, or the tears evaporate too fast, leaving the surface under-lubricated. It feels like grittiness, burning, stinging, tiredness, blurred vision that clears on blinking, or — confusingly — watery eyes, as the surface over-reacts. It is extremely common and usually driven by everyday factors: prolonged screen use (we blink less), age, contact lenses, dry or air-conditioned environments, and many medications (antihistamines, some antidepressants, and others). Hormonal changes around menopause contribute. But there is one important medical association: when dry eyes are persistent and combined with a dry mouth, they can be the presenting feature of Sjögren's syndrome, an autoimmune condition in which the immune system attacks the glands that make tears and saliva — which is why that combination prompts autoimmune blood tests.
Common causes
- Screen use and reduced blinking — a very common modern cause.
- Age and menopause — tear production declines; hormonal changes contribute.
- Contact lenses.
- Dry, windy or air-conditioned environments.
- Medications — antihistamines, some antidepressants, decongestants, beta-blockers.
- Blepharitis / meibomian gland problems — poor-quality, fast-evaporating tears.
- Sjögren's syndrome and other autoimmune disease — especially dry eyes plus a dry mouth.
- Thyroid eye disease — with other thyroid features.
Lab work-up approach
Most dry eye needs no blood tests — it is managed on the eye symptoms. Testing becomes relevant when dryness is persistent and accompanied by a dry mouth, joint pains, fatigue or other autoimmune features, pointing toward Sjögren's syndrome: here the screen includes ANA, specific antibodies (anti-Ro/SSA and anti-La/SSB), rheumatoid factor and inflammatory markers (ESR, CRP). TSH is checked if a thyroid cause is possible. Mediora.AI can surface the autoimmune and thyroid pattern from your results when the picture suggests more than simple dry eye; the eye assessment itself belongs with an optometrist or ophthalmologist, and the autoimmune diagnosis with rheumatology.
Tests Mediora.AI can interpret
Related conditions
Panels to consider
When to see a doctor
Occasional dry eyes usually respond to simple measures — screen breaks, lubricating drops, a humidified environment, reviewing contributing medications. See a doctor or eye specialist if dryness is persistent, painful, affects your vision, or does not improve with drops. Importantly, dry eyes together with a persistently dry mouth, or with joint pain and fatigue, is worth mentioning to your doctor, as it can indicate Sjögren's syndrome and warrants autoimmune tests. Sudden eye pain, marked redness or vision loss needs urgent eye assessment. Mediora.AI helps screen the autoimmune and thyroid contributors when relevant; the eye and any autoimmune evaluation belong with your clinicians.