Fuchs dystrophy: symptoms, treatment and corneal transplant

Moorfields says treatment depends on your symptoms. With no symptoms, no treatment or follow-up is required. With mild symptoms, sodium chloride 5% eye drops may help by drawing fluid out of the cornea and reducing swelling. With moderate or severe symptoms a corneal transplant may be required.

The evidence for drops is not strong. NHS Scotland’s community eyecare guideline says ocular lubricants can be used for symptomatic relief, and that hyperosmotic agents such as sodium chloride 5% may be tried in moderate to severe cases although trials do not support meaningful symptom improvement. The College of Optometrists says no treatment is available to reverse the condition, though lubricant eye drops may make the eye more comfortable.

The guideline adds practical advice: sunglasses or tinted lenses for glare, and a therapeutic contact lens for painful surface blisters to reduce friction and protect exposed nerves.

If the vision is greatly affected or the eye is painful, the College of Optometrists says the ophthalmologist may recommend a corneal transplant, which has a good chance of improving vision and making the eye comfortable.

Moorfields says the transplant may be one of two types: endothelial keratoplasty, where healthy endothelial cells from a donor are transplanted onto the back surface of your cornea, or penetrating keratoplasty, where the whole cornea is replaced with a donor cornea.

NHS Scotland’s guideline describes endothelial keratoplasty as the preferred modern treatment, including DSAEK, DSEK, ultrathin DSEK and Descemet’s membrane endothelial keratoplasty (DMEK). It says penetrating keratoplasty is now less common, largely superseded by endothelial techniques, and that low-certainty evidence suggests DMEK offers faster visual recovery and superior outcomes compared with DSEK.

Moorfields adds that Fuchs’ dystrophy cannot return in a newly transplanted cornea. While there is no cure, transplant is very effective with a high success rate, although a repeat transplant may be required in certain circumstances.

Another approach, Descemet Stripping Only (DSO), removes the diseased central area without transplanting donor cells and lets your own cells move in from the edge. Moorfields says DSO is not yet performed routinely and is under research.

Moorfields says Fuchs’ develops slowly and in the early stages you might not notice any symptoms, so it is often found as an incidental finding on a routine eye test. Early symptoms include mild blurring of vision, particularly on waking first thing in the morning, which improves through the day.

As the condition progresses, the blurring becomes worse, remains throughout the day and does not improve. The extra fluid makes your eyes more sensitive to light (glare), which can be particularly bothersome at night, for example when driving. In more advanced cases, tiny blisters may form on the surface of the cornea. These can break open, causing eye pain and eventually corneal scarring.

The College of Optometrists adds that the condition is painless at first, and that a sharp pain can occur if blisters burst later.

The cornea is the clear, dome-shaped window at the front of the eye. Moorfields explains that it has three main layers: the outer epithelium, the middle stroma and the inner endothelium, separated from the stroma by Descemet’s membrane. Endothelial cells act as a pump that removes fluid and keeps the cornea clear. Endothelial cells are naturally lost with age and do not regenerate.

In Fuchs’ endothelial corneal dystrophy (FECD), these cells are lost at a faster rate, leaving fewer pump cells so that fluid accumulates and the cornea swells. The College of Optometrists describes it as a progressive, non-inflammatory, bilateral disease that is usually inherited, with no infection or inflammation. Moorfields says the actual reason cells die faster is unknown.

Moorfields says cataract and Fuchs’ are separate conditions that are not linked, but cataract surgery can accelerate endothelial cell loss. If you have mild Fuchs’ and a cataract affecting vision, your doctor may suggest removing the cataract first. If the cornea remains cloudy after surgery, a corneal transplant may be needed, though in mild cases the cornea usually clears without one.

For advanced Fuchs’ with cataract, the doctor will plan both cataract surgery and a corneal transplant to be done on the same day or on different days. NHS Scotland’s guideline says Fuchs’ should be clearly documented before cataract referral and that patients with early FECD need careful counselling because uncomplicated procedures may still risk postoperative decompensation.

It is often diagnosed by an optometrist or eye specialist who sees the changes on a routine eye test. NHS Scotland’s guideline lists imaging including specular microscopy and Scheimpflug tomography to document endothelial changes, and measurement of central corneal thickness to monitor progression over time. Endothelial cell counts may aid prognosis before cataract surgery.

Look-alikes the guideline lists include bullous keratopathy after earlier eye surgery, posterior polymorphous dystrophy, recurrent corneal erosion and contact lens overwear, so the clinical assessment matters.

Fuchs’ itself develops slowly. Because blisters on the surface can burst, a sudden painful, red or watering eye should be assessed the same day. The NHS advises an urgent GP appointment or NHS 111 for a painful red eye, and 999 or A&E for any sudden change in sight such as wavy lines, flashing or loss of vision, a red eye with severe headache and feeling sick, or pain when looking at light.

See an optometrist routinely if you notice blur on waking that clears, new glare at night or a gradual decline in vision, so the cornea can be checked and followed.

On the NHS an optometrist or GP can refer you to a hospital eye service. NHS Scotland’s guideline describes initial management with possible routine referral to ophthalmology, with corneal specialists handling transplants. Transplant services depend on donor tissue supply and local waiting times.

Private corneal surgery is available, funded by self-payment or insurance, as Moorfields notes for its own service. Ask any surgeon which technique they use, how many they perform, and how follow-up and rejection-checking will be handled.