What is a cataract?
The term ‘cataract’ is used to describe the clouding of the natural lens of the eye. Normally, the lens in the eye is clear, allowing light rays to pass through easily and focus on the retina to get a clear vision. The vision dims because the cataract prevents light from passing beyond the lens and focusing on the retina. As cataract develops, the lens becomes cloudy as in the picture above and interferes with the transmission of light. The resulting image on the retina is thus blurred.
Common symptoms :
Surgery is the only way a cataract can be treated. No dietary supplements, medications, exercises or optical devices have been proven to prevent or cure cataract. Surgery should be considered when the cataract causes visual disturbance enough to interfere with daily activities. Based on these needs and the examination findings, the patient and the ophthalmologist should decide together when surgery is appropriate. Cataracts need not be mature or ‘ripe’ before removal.
More about Cataract surgery
Cataract surgery is a day care, microscopic surgery performed under anaesthesia eye drops or local anaesthesia. The cloudy lens is removed leaving its capsule behind, within which a permanent, artificial intraocular lens is implanted. Today, there are a wide range of intraocular lens implants available, which not only replace the cataract, but also give visual advantages with better near vision, improved night vision and also can reduce or eliminate the need for spectacles post surgery.After cataract surgery, the patient can return immediately to almost all routine activities. Medication must be administered as per the instructions of your cataract surgeon or ophthalmologist.
Latest technique- Phacoemulsification
Phacoemulsification is a micro-incision technique of cataract surgery wherein an ultrasound probe breaks the cataract into tiny pieces and sucks them out. The foldable lens implant is inserted through a very small incision (2.8 – 3.0 mm) as compared to an approximately 5 mm incision to accommodate a non-foldable lens. The incision are self-sealing and needs no stitches. Your ophthalmologist will help you decide as to which lens implant is most suitable for you.