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Medical equipment

About KKEC's Medical Devices

At KKEC, we put a premium on your safety. The surgical lasers we use in our vision correction procedures have all been approved by the Ministry of Health, Labour and Welfare.

Types of Medical Device

VISX Star S4 IR®

Abbott Medical Optics, Inc. (U.S.) VISX Star S4 IR®
Abbott Medical Optics, Inc. (U.S.)
VISX Star S4 IR®

VISX is an excimer laser system developed for vision correction surgery by Abbott Medical Optics, Inc. (USA; formerly VISX, Inc.). Ever since the U.S. Food and Drug Administration (FDA) granted approval for the use of excimer lasers in 1989, Abbott Medical Optics, Inc. has led their development through continuous innovation. The VISX boasts a 73.6% share of the U.S. market, according to a 2010 survey by the American Society of Cataract & Refractive Surgery. Recognizing the safety and effectiveness of the VISX, the Ministry of Health, Labour and Welfare approved the device for use in Japan in 2000.

Our clinic uses the latest (7th generation) model of the excimer laser, the VISX Star S4 IR®, which was originally developed in 1988. Postoperative outcomes have improved along with the evolution of excimer laser technology. In Japan, the VISX Star S4 IR® was approved in March 2008 for use with LASIK.

This VISX Star S4 IR® enables customized laser treatment for the unique eye condition of different individuals and has the added advantage of reducing the halo effect and glare (blurred light or glaring especially at night) for better night vision and a generally higher quality of vision.

VISX Star S4 IR®'s advanced technology

Related treatments

iFS Femtosecond Laser

Manufactured by Abbott Medical Optics, Inc. (USA) iFS Femtosecond Laser
Manufactured by Abbott Medical Optics, Inc. (USA)
iFS Femtosecond Laser

KKEC's iFS Femtosecond Laser is manufactured by Abbott Medical Optics, Inc. and is used to create the flaps in LASIK surgery.

In the past, the microkeratome, a device for creating flaps with a special, automated blade, was used with LASIK. Now, most ophthalmologists use a computer-controlled laser system to create flaps. The advent of the laser has allowed ophthalmologists to customize the thickness and angle of the flap and the position of the hinge according to each customer's specifications. Compared to the microkeratome, the iFS Femtosecond Laser is not only safer but also more precise.

Abbott Medical Optics, Inc.'s (formerly IntraLase, Inc.) laser-based flap creation technology was approved by the FDA before numerous other rival products. The iFS Femtosecond Laser, the culmination of numerous technological improvements, is currently in its fifth generation and boasts a 59.3% share of the US market, according to a 2010 survey by the American Society of Cataract & Refractive Surgery. The iFS Femtosecond Laser is the only laser-based flap creation technology to be approved by the Ministry of Health, Labour and Welfare in Japan.

The iFS Femtosecond Laser marks a technological advance over the FS60, which was previously used at KKEC. The iFS Femtosecond Laser enables safer, quicker surgery resulting in a more robust flap and higher quality of vision, thanks to the enhanced precision of the laser.

*The Ministry of Health, Labour and Welfare approved the device in 2011 in recognition of its excellent safety.

Characteristics of the iFS Femtosecond Laser

Related treatments

Wave Scan Wavefront®

Wave Scan Wavefront®
Wave Scan Wavefront®

Wave Scan Wavefront® is designed to measure various aspects of a person's eyes and analyze the data for customized treatment plans using Premium iLASIK® and Custom Epi-LASIK. Wave Scan Wavefront® enables us to create a laser irradiation program tailored to the unique features of each person's cornea, thanks to its much greater ability to analyze the data than other manufacturers' products.

Unlike conventional technologies, Wave Scan Wavefront® does not require dilation of the pupil (the opening in the center of the iris that allows light to enter the eye). Wave Scan Wavefront® also allows the required measurements to be made even if the pupils are not perfect circles. These features of Wave Scan Wavefront® help reduce patients' stress during an operation and expand the possibilities of surgery. For further safety, Wave Scan Wavefront® also records the individual patterns of the iris (the ring-shaped structure surrounding the pupil), which varies from person to person.

Wave Scan Wavefront®'s advanced technology

Related treatments



Thanks to Epi-LASIK, patients who were previously considered unsuitable for LASIK treatment, such as those with a thin cornea relative to their degree of myopia or enthusiasts of the marital arts or other potentially violent contact sports (that may impact the eyes), can still receive vision correction surgery.
Epi-LASIK involves the removal of the corneal epithelium using a special medical device called an Epi-Keratome. Following their removal, the corneal epithelial cells regenerate without leaving a flap, unlike in LASIK.

Based on KKEC's track record of treatments using LASEK, a surface ablation technology similar to Epi-LASIK, we adopted AMADEUS II, an Epi-Keratome device manufactured by Ziemer Ophthalmic Systems, AG (Switzerland), soon after its introduction in Japan.

Related treatments


NIDEK CO., LTD. MK-2000 Microkeratome
MK-2000 Microkeratome

Crucial to the success of LASIK treatment is the creation of the flap. The microkeratome was the main instrument used for flap creation until it was superceded by IntraLASIK. The microkeratome may be unsuitable for some individuals of Japanese descent due to the difference in eye size compared to people of other ethnic backgrounds.

Based on our experience, we use three models that fit the eye of Japanese people best: MK-2000 Microkeratome (NIDEK CO., LTD.), MK-2000 38.5 Microkeratome (jointly developed by KKEC and NIDEK CO., LTD.), and Moria M2 (Moria SA, France)

We are careful to choose the microkeratome most suitable to each person's eyes and always keep a back-up of the same model on hand. The use of the microkeratome requires extensive experience on the part of the ophthalmologist. Our surgeons began performing LASIK before laser-based flap creation became mainstream. KKEC guarantees that all our surgeons are highly experienced in the use of the microkeratome.

Infection control measures at our clinic