Leukoma is a dense whitish opacity of the cornea, the normally clear front surface of the eye. It often represents scarring after an infection, injury or other corneal damage. A scar can scatter or block light and make the surface irregular, affecting vision in different ways. Its importance depends on its position, depth and extent, as well as the health of the rest of the eye. Corneal scarring is different from cataract, which affects the lens inside the eye.
An ophthalmology assessment establishes whether an opacity is an old stable scar or whether active disease needs treatment. Options may include optical correction, a specialist contact lens, selected surface treatment or a corneal transplant. No single procedure is suitable for every scar, and improved vision cannot be guaranteed. Bring prior records and details of injuries, infections or operations. A painful red eye, marked light sensitivity or sudden worsening of sight needs urgent local assessment before travel.
Assessing a cloudy or scarred cornea
A visible white area is not enough to identify the cause or choose treatment. The specialist considers how the opacity affects light entering the eye, whether the corneal surface is healthy and what the person needs for everyday activities. An active infection or injury requires a different approach from a stable scar.
How is corneal scarring different from cataract?
The cornea is the transparent tissue at the front of the eye; the lens sits further inside. A corneal scar affects the cornea, while cataract is clouding of the lens. Both can blur vision and may coexist, but their treatments differ. Replacing a cloudy lens does not remove a corneal scar. Assessment therefore considers the cornea, lens, retina and optic nerve rather than attributing every visual difficulty to the visible opacity. Previous infection, injury and surgery records can help explain how the change developed.
What does an eye examination need to establish?
Vision testing and detailed examination help determine the location and extent of the opacity and whether inflammation or an unhealed surface is present. Additional corneal measurements or imaging may be selected when planning treatment. The clinician also considers the other eye and any condition that limits potential vision. In children, an opacity that blocks clear visual input can interfere with visual development and cause amblyopia, so assessment should be timely. A new white spot with pain, redness or light sensitivity must not simply be assumed to be an old scar.
Which treatment options may be appropriate?
Glasses may help some people. Where surface irregularity limits correction, a suitably fitted specialist contact lens may improve optical quality without removing the scar. A laser surface procedure, such as phototherapeutic keratectomy, is an option for selected superficial opacities and is not suitable for every scar. More extensive damage may lead to discussion of a partial or full-thickness corneal transplant, depending on the affected layers and other findings. Active underlying disease must also be addressed. The team should explain the intended benefit, limitations, risks and alternatives before a decision.
What should aftercare and travel planning cover?
Contact lenses require appropriate fitting, hygiene and follow-up. Surgery may involve prolonged use of prescribed drops and repeated eye examinations, with glasses or lenses still needed afterwards. Transplants carry risks including rejection and infection. Agree how follow-up and urgent review will be provided after returning home. New pain, redness, light sensitivity or deteriorating vision after a transplant needs prompt contact with an eye team. Sudden sight loss or severe eye pain requires emergency local care; do not wait for travel.