Cataract surgery involves removing the eye's cloudy natural lens and replacing it with a clear artificial intraocular lens. The procedure may be recommended when cataracts interfere with reading, driving or other everyday activities. Preoperative examinations help determine the appropriate surgical technique and lens selection for each patient.
Phacoemulsification is a modern cataract surgery technique that uses ultrasound energy to break the cloudy natural lens into small fragments before removal. An artificial intraocular lens is then implanted. This approach commonly uses small incisions and may support relatively rapid visual recovery, depending on the patient's eye condition.
Multifocal intraocular lenses are designed to provide vision at more than one distance following cataract surgery. They may reduce dependence on spectacles for selected patients, although visual side effects such as halos and glare can occur. Suitability depends on retinal health, lifestyle requirements and detailed preoperative evaluation.
Toric intraocular lenses are specialised artificial lenses used during cataract surgery to correct selected amounts of corneal astigmatism. They can improve uncorrected distance vision by addressing both cataract and astigmatic refractive error. Accurate measurements and appropriate lens alignment are important for achieving the intended visual correction.
Vitreoretinal surgery treats selected conditions affecting the retina and vitreous gel inside the eye. It may be considered for retinal detachment, vitreous haemorrhage, macular holes and certain complications of diabetic eye disease. The surgical technique depends on the underlying condition, retinal findings and visual prognosis.
Pars plana vitrectomy is a surgical procedure in which vitreous gel is removed through small instruments inserted into the eye. It provides access to retinal structures and may be used to treat retinal detachment, macular disorders or vitreous bleeding. Recovery and postoperative positioning requirements vary according to the procedure.
Retinal detachment occurs when the light-sensitive retina separates from its underlying supporting tissue. It can cause flashes, new floaters or a shadow across vision and requires urgent assessment. Surgical options may include vitrectomy, scleral buckling or pneumatic retinopexy, depending on the type and extent of detachment.
Diabetic retinopathy develops when diabetes damages the blood vessels supplying the retina. Management depends on disease severity and may include monitoring, intravitreal injections, retinal laser treatment or surgery. Early detection through dilated retinal examinations can reduce the risk of serious vision complications.
Intravitreal injections deliver medication directly into the vitreous cavity of the eye. They are commonly used for selected retinal diseases, including diabetic macular oedema and neovascular age-related macular degeneration. Treatment usually requires careful monitoring, and repeat injections may be necessary depending on disease activity and response.
Retinal laser photocoagulation uses focused laser energy to treat selected retinal abnormalities. It may be recommended for proliferative diabetic retinopathy, certain retinal tears or other vascular retinal disorders. The purpose is generally to reduce disease progression or the risk of further damage rather than restore existing retinal injury.
YAG laser capsulotomy treats posterior capsule opacification, a condition that can develop after cataract surgery and cause renewed blurred vision. The procedure uses a laser to create an opening in the cloudy capsule behind the artificial lens. Suitability is confirmed through an ophthalmic examination.
Age-related macular degeneration affects the central portion of the retina responsible for detailed vision. Evaluation may include retinal examination, optical coherence tomography and other imaging tests. Management depends on disease type and severity and may include monitoring, appropriate supplements or intravitreal anti-VEGF treatment.
Diabetic macular oedema occurs when fluid accumulates in the central retina due to diabetes-related vascular damage. It may cause blurred or distorted central vision. Treatment can involve intravitreal medication, selected laser procedures and management of systemic risk factors such as blood glucose and blood pressure.
A retinal tear is a break in retinal tissue that may increase the risk of retinal detachment. Symptoms can include sudden flashes or an increase in floaters. Selected tears may be treated with retinal laser or cryotherapy to create a protective adhesion around the affected area.
A macular hole is a defect in the central retina that can cause distortion and loss of detailed vision. Surgical treatment commonly involves vitrectomy with membrane peeling and placement of a gas bubble when appropriate. Visual recovery depends on factors including hole size, duration and retinal health.
Vitreous haemorrhage occurs when blood enters the vitreous cavity, potentially causing sudden blurred vision, floaters or significant visual obstruction. Causes include diabetic retinal disease and retinal tears. Management may involve observation, treatment of the underlying retinal disorder or vitrectomy when clinically necessary.