The capsular bag effective lens position (aka: ACD) is assumed to be 5.20 mm (as with the popular Alcon MA60AC), but these numbers will work with almost any modern posterior chamber intraocular lens. The effective lens position for the ciliary sulcus is estimated to be 4.70 mm.

After entrance into the anterior chamber, the lens is slowly injected into the sulcus space with an initial turn of the cartridge bevel clockwise to promote proper orientation of the leading haptic. The cartridge bevel is then turned counterclockwise while injection continues to allow slow unfolding of the optic in the sulcus space (Figure 4).

2018年6月25日 · When we change the effective lens position of the optic, we need to adjust the IOL power to achieve the intended refractive target. If the optic is in the plane of the sulcus, then its power should be adjusted.

High-frequency ultrasound biomicroscopic image demonstrating a well positioned 3-piece intraocular lens in the ciliary sulcus space. The IOL with Acrylic optic and square anterior edge has wide haptics (13mm) and a large yet injectable 6.5mm optic.

Placing the haptics in the ciliary sulcus with optic capture through the CCC is the best way ensuring long term IOL stability, nearly eliminates the risk of phimosis, and tends to decrease zonular damage.

2023年5月18日 · The second most common method of anchoring a posterior chamber lens (IOL) in the eye is to place it in the ciliary sulcus, if its positioning in the capsular bag is not possible. The main indications for the implantation of an IOL in the sulcus are surgical...

2019年11月1日 · Currently the one-piece PMMA (polymethylmethacrylate) lens or a three-piece IOL are the best available options for IOL placement in the ciliary sulcus space. Single piece acrylic (SPA) IOLs are...

2019年11月27日 · Currently the one-piece PMMA (polymethylmethacrylate) lens or a three-piece IOL are the best available options for IOL placement in the ciliary sulcus space. Single piece acrylic (SPA) IOLs are not designed for sulcus placement and there is growing evidence of chronic complications related to their use in the ciliary sulcus.

2020年6月3日 · The sulcus can effectively fixate an appropriately designed IOL with good long-term stability and safety. The most common conditions where a sulcus IOL is preferred are rupture of the posterior capsule, zonular laxity, and planned piggyback IOL placement . This chapter introduces some basic concepts on sulcus IOL implantation.

An up to date and comprehensive guide to sulcus intraocular lens in vitreoretinal surgery.