---
title: Five Frequently Asked Questions About Ringject and CTR
description: Capsular Tension Rings (CTRs) and our preloaded Ringject system are designed to stabilize the capsular bag in case of zonular dehiscence.
image: https://www.ophtec.com/hubfs/Afbeeldingen/Blogs/FAQ_CTR_Ringject_blog_detail.png
---

** Blog ** 20-03-2024

# Five Frequently Asked Questions About Ringject and CTR

**By** Ophtec

**In the field of ophthalmology, Capsular Tension Rings (CTRs) are indispensable tools, tackling challenges of intraocular lens (IOL) implantation. As consultants, we frequently field questions about CTRs and their role in procedures. We have compiled answers to five common questions about [Ringject](https://www.ophtec.com/product-overview/ringject) and [CTR](https://www.ophtec.com/product-overview/capsular-tension-ring). Whether you are a seasoned surgeon or new to the field, these insights will boost your knowledge and surgical success. Let's explore CTRs and the benefits of the Ringject system.**

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![](https://www.ophtec.com/hubfs/Afbeeldingen/Blogs/FAQ_CTR_Ringject_blog_detail.png)

## 1. When do you use a CTR?

Capsular tension rings (CTRs) are designed to stabilize the capsular bag in cases of zonular dehiscence allowing an IOL to be implanted in the bag when it might otherwise have had to be positioned elsewhere.

## 2. Many surgeons use the CTR in combination with MIOLs. Why?

Positioning of multifocal intraocular lenses (MIOLs) is important because a tilt or decentration can decrease the visual quality and produce optical side effects, causing subjective symptoms and patient dissatisfaction. To avoid these effects, CTRs have been demonstrated to play a role in the stability and positioning of IOLs and can prevent IOL rotation and decentration caused by capsular bag contraction.

## 3. Are CTRs preloaded?

CTRs can be ordered both individually or preloaded with injector systems like the [Ringject](https://www.ophtec.com/product-overview/refractive/ringject).

## 4. How come Ophtec’s CTR is the easiest to implant?

The Ringject has a ‘ski-tip’ feature – the ends of the rings are gradually formed to ‘tip-up’ like a ski tip. This allows the CTR to be easily guided in the capsule as the ring is dialed-in. The ‘ski tip’ allows the tip to flow unimpeded in capsule and not become ‘snagged’. Also, Ophtec’s CTR is extremely flexible with incredible strength, thanks to its unique production process with compression molding technology. Only Ophtec can tie its tension rings in a knot.

## 5. How does the Ringject work?

The Ringject system is a preloaded CTR in a single use injector. The CTR is prepositioned and is designed to be self-loading for the surgeon’s convenience. Clockwise or counterclockwise insertion is possible. The Ringject system is provided in a sterile blister, ready for use.

![Ringject[1]](https://www.ophtec.com/hs-fs/hubfs/Producten/Product%20images/PNG/Ringject%5B1%5D.png?width=2778&height=2083&name=Ringject%5B1%5D.png)

## More Questions?

Whether in the OR or just a phone call away, our team is ready to support you with expert advice and outstanding solutions. [Click here](https://www.ophtec.com/contact) to contact us.

## Continue reading

[View article overview](https://www.ophtec.com/blog)

![](https://www.ophtec.com/hubfs/Email%20header%20-%20Artiplus%20+%20Vacufix2.jpg)

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## Continue reading

![](https://www.ophtec.com/hubfs/Email%20header%20-%20Artiplus%20+%20Vacufix2.jpg)

** Blog ** 21-08-2025

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[View article overview](https://www.ophtec.com/blog)

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