Ophthalmology

Modern eye care rests on precise measurement. Before any treatment, the eye is examined with a microscope, the pressure inside it is checked, and scans map the cornea, the lens and the retina in fine detail, because the right method differs from one eye to the next. Much of ophthalmic surgery is microsurgery, carried out through openings of only a few millimetres under an operating microscope, which is why recovery is often fast and discomfort minimal. The field is also strongly preventive: many serious eye diseases, including glaucoma and diabetic eye disease, develop silently and are best caught at a routine check before they affect sight. An eye specialist therefore combines the roles of surgeon, physician and screener, treating disease while protecting the vision a person still has.

The conditions ophthalmology treats cover the whole eye. Refractive errors, namely short sight, long sight, astigmatism and the age related loss of near focus, are extremely common and can often be reduced or removed with laser or lens surgery. A cataract, the clouding of the eye's natural lens that usually comes with age, is the leading cause of treatable visual loss worldwide and is corrected by replacing the lens. Glaucoma damages the optic nerve, often through raised pressure, and can quietly steal vision before symptoms appear. The retina is the seat of some of the most serious problems, including diabetic eye disease, age related macular degeneration, retinal tears and detachment. The cornea can be affected by infection, scarring or thinning conditions such as keratoconus, while children are treated for lazy eye, squint, blocked tear ducts and congenital cataract, and oculoplastic surgeons care for the eyelids and tear system.

Laser vision correction reshapes the cornea to reduce or remove the need for glasses, using techniques chosen for each eye after detailed measurement, and useful sight often returns within a day. Cataract surgery is one of the most successful operations in all of medicine: the cloudy lens is broken up and removed through a tiny opening and replaced with a clear artificial lens, and modern multifocal and astigmatism correcting lenses can reduce the need for glasses for both distance and reading. Glaucoma is managed with drops, laser or surgery to lower the pressure and protect the nerve. Retinal disease is treated with laser, with injections into the eye for conditions such as macular degeneration and diabetic swelling, and with vitrectomy microsurgery for tears, detachment and membranes. Corneal transplantation, using tissue from an eye bank, restores clarity when the cornea is scarred or diseased, and strabismus surgery realigns the eyes in children and adults.

Eye care depends on imaging that shows the eye in remarkable detail. Optical coherence tomography produces cross sections of the retina and optic nerve to find disease early and follow it over time, while corneal topography and tomography map the surface and thickness of the cornea to plan laser and lens surgery. Visual field testing detects the silent loss caused by glaucoma, and ultrasound and angiography assess the retina when the view is limited. In surgery, the operating microscope, modern phacoemulsification systems for cataract, femtosecond and excimer lasers for the cornea, and fine vitreoretinal instruments allow precise work on structures measured in fractions of a millimetre. Because eye treatment is guided so closely by these measurements, an accurate examination is as important as the procedure itself.

For people who travel, eye care is often well suited to a short, focused visit. The process usually begins with a review of glasses prescriptions, scans or reports sent in advance, followed by a full examination on arrival that confirms the diagnosis and the plan. Many treatments, including laser correction and cataract surgery, are day procedures performed under anaesthetic drops, so there is no overnight hospital stay and vision often improves quickly. A stay of a few days in the destination city allows the eye to be checked the day after treatment and again before flying, while reading, screen use and eye protection are guided by clear written instructions. Drops to prevent infection and inflammation are usually prescribed for a few weeks. Interpreter and international patient support help throughout, and most patients fly home once the surgeon confirms the eye is settling well, continuing with remote follow up and a local check where needed.