Extended Depth of Focus (EDoF) is the next generation technology in multifocal lens design. EDoF lenses let you see clearly at far and intermediate distances. They provide greater spectacle independence than monofocal lenses, while inducing less visual side effects compared to trifocal lenses. This balance of increased spectacle independence and less visual phenomena is particularly attractive to patients with an active lifestyle, who wish to be spectacle-free for most of their daily activities but are more sensitive to halos and glare. EDoF lenses are a particularly good option for patients who have had prior laser eye surgery.
Adjusting the focusing of EDoF lenses with the non-dominant eye slightly near-sighted (mini-monovision) can further improves reading vision. This means that with both eyes open, you have the advantages of both monofocal and multifocal IOLs: greater freedom from glasses and fewer side effects.
A picture speaks a thousand words, or in this case, a simulator from lens manufacturer Zeiss. This useful tool will explain some of the differences and limitations of the various lens designs. Although the simulator discusses cataract, the same principles apply to RLE surgery with the same lenses being available for both types of surgery.
Click here to visit the simulator now.
Although RLE and Cataract surgery are effectively the same operation, the reason for each is quite different. RLE is used in cases where laser surgery is not suitable or possible, while Cataract surgery is performed when the natural lens in the eye becomes cloudy.
Hover over and click the images below for more information about all the lens types that Mr Gore uses. Lots of information about life after Cataracts is available here, with more available in person at your consultation.
RLE / Cataract surgery is performed as a day-case procedure, typically lasting 15 minutes. Both eyes are usually treated on the same day. You will go home with a protective shield over the eye which you can remove the following morning.
Overall, RLE/Cataract surgery is very safe. Complications rarely occur, with a serious problem such as an infection or bleeding in the eye affecting approximately 1 in 1000 patients. 1 in 100 patients may require a second operation - this could include repositioning or exchange of the lens, clearing lens fragments from the back of the eye or repairing a retinal detachment. 1 in 5 patients may develop posterior capsule opacification (PCO) - a thickened membrane behind the new lens that can develop months or years after the operation. This can cause the vision to become blurred again and may require a quick out-patient laser procedure (YAG laser capsulotomy) to restore clarity.
The experience and expertise of your surgeon is the most important factor in minimising the risk of complications during your treatment. Daniel Gore has an excellent safety record: His PCR (posterior capsular rupture) rate, the key index for safety in RLE & cataract surgery, is 0.62 %*, compared with 1.5% national average and the Royal College of Ophthalmologist's benchmark of 2.0%.
*(correct as of 2021)