Types of IOL
The intraocular lens (IOL) is the artificial lens that is inserted into the lens capsule once the old hardened lens is removed. The type of IOL used depends on the availability and the patients’ needs. The doctor would usually discuss the advantages and drawbacks as well as the lifestyle adjustment of each option.
Fixed-focus monofocal lenses
This type helps with distance vision. Patients with this IOL will need the help of glasses when reading or looking at near objects.
Accommodating monofocal lenses
These lenses can shift from near to far vision in response to movement from the ciliary body. This type of lens is ideal for far and middle vision. But some patients might still have to use glasses for reading.
Astigmatism is a refractive error caused by the irregular curvature of the cornea. Toric lenses can be inserted to correct astigmatism as well as aid in far vision.
These are very similar to progressive or bifocal lenses where there are areas assigned for distant, intermediate, and near vision. The disadvantage of this type of lens is the distortion of bright light that results in glare and halos especially during the night.
What to Expect Before the Surgery
As mentioned, cataract surgery is relatively safe and quick. However, to help calm the nerves, here’s what to expect at your next doctor’s appointment.
- The doctor will perform an ultrasound to gather information on your eye. The information will be used to determine the right type of implant.
- Your doctor will present options on what implant you can have.
- Your doctor might ask you to use eye drops before the procedure.
- Medical conditions such as high blood pressure and diabetes have to be under control.
- Your doctor might have to ask you to stop taking certain medications.
- You will be asked not to take any solid food or drink liquids hours before the surgery.