One of the Ophthalmic Consultants, Mr Jaheed Khan or Laura Crawley, examines your eyes using the slit-lamp. This is to determine the type of cataract, measure the eye pressure and look at the retina and especially the macula. If required, special retinal tests and photos are done. Once the diagnosis of cataract is made and you decide on surgery, the ophthalmic consultant will discuss with you the options for local anaesthesia, the type of intraocular lens to be used and whether you want to wear glasses afterwards, for reading, distance or not at all.
The nurse will measure your eyes for the Intra-Ocular Lens
Biometry is done to measure the eye for a customized intraocular lens as once the cataract is removed, the eye will need a new lens. Each lens has a specific power, which is individual to each patient.
a) Mono-focal Lens
The large majority of patients opt for an intraocular lens that is set for distance vision. This is called a mono-focal lens. With this lens type, you will still need to wear reading glasses for close-up tasks.
b) Multi-focal Lens.
Some patients are very keen to be completely free of glasses after their cataract operation. We can offer a multifocal intraocular lens that is set for all distances (reading, intermediate and distance). This should be discussed with your surgeon to see whether it is suitable for you.
c) Toric lens
Some patients have an irregular corneal shape known as astigmatism. We can offer an intraocular lens that can correct for this, known as a toric intraocular lens implant.
More about the different types of Cataracts
This is the most common type of cataract and causes blurred vision, increased short-sightedness, dulling of colours and light.
The central part of the lens becomes denser and yellow, the eye more myopic and images dulled.
This is a quite common type of cataract where there are radial opaque spokes which can cause glare, distorted, ghosting and double vision and blurring.
Posterior sub-capsular cataract
Posterior sub-capsular cataract which causes glare and worse vision in bright lights when the pupil constricts.