Physician wearing IO-Vega binocular indirect ophthalmoscope examining a patient's eye
IO-Vega

The eye fundus is the only part of the human body where blood vessels can be directly observed without an incision. Fundus examinations are extremely delicate — even the slightest difference in findings can directly influence diagnoses and treatment decisions. For this reason, examination instruments must meet the highest standards of precision and stability.
Our newly developed binocular indirect ophthalmoscope is engineered to meet the essential demands of fundus examinations, achieving both sensitivity and reliability to deliver new value to clinical practice.

IO-Vega device

Pursuit of Clarity

An Unwavering Pursuit of Optical Excellence.
Design Precision & Manufacturing Technology & Alignment Expertise.

Internal structure

Design Precision - A Philosophy Devoted to Mastering Light

The foundation of IO-Vega’s design philosophy begins with a single question: How we should guide the light? In our lens design, optical aberrations are corrected by precisely optimized lens geometry, achieving higher image quality with exceptional clarity.
A special multilayer anti-reflective coating - engineered with wavelength-selective absorption - suppresses unwanted reflections on the lens surface, preventing ghosting and flare, enhancing light transmittance, and allowing only the “true light” essential for diagnosis to pass through. Anti-reflective treatment is also applied to the lens barrel interior, refining the optical purity of the entire system to its utmost limit and supporting precise diagnosis without overlooking even subtle abnormalities. IO-Vega also features a wide dynamic range of illumination - from extremely low brightness (below 10 lx) to high brightness (up to 1 ,700 lx). By adopting a PWM lighting circuit, it achieves smooth, flicker-free dimming even at low illumination levels.
IO-Vega delivers light the users need while minimizing patient burden.

Manufacturing process

Manufacturing Technology - Refining the Precision to the Highest

The basis supporting IO-Vega’s performance lies in carefully selected materials and highly precise manufacturing techniques. Streamlining the overall structure and enhancing machining accuracy, we rigorously choose materials according to their optimal application including optical glass, aluminum, magnesium, wear resistant stainless steel, and advanced engineering plastics.
By use of CNC precision machining and ultra fine mechanical processing, tolerances are controlled down to tens of microns.
Only components that satisfy these strict standards enter our tolerance managed production process. Each unit is meticulously assembled by skilled craftsmen who take over the expertise cultivated over many years. Every step in our manufacturing technology represents a chain of refined techniques, forming an essential element that crystallizes IO-Vega’s optical performance at its highest level.

Alignment process

High Precision Alignment - The Final Process That Builds Trust

The final adjustment and inspection processes are what ultimately determine the level of the completion and quality of IO Vega. Using dedicated alignment fixtures, our engineers perform ultra precise adjustments that craft the high quality “visibility” essential for clinical use. Through meticulous visual axis tuning and micro level optical axis positioning, a stable and reliable illumination field is secured.
This alignment expertise—refined through years of accumulated experience—ensures long term performance and enduring reliability.
During the final inspection, our specialists rely on their exceptional observational senses, capable of detecting subtle fluctuations in light or slight “breathing” inconsistencies between components that numerical values cannot capture. While providing feedback to the manufacturing team, they employ sensitivities that cannot be expressed in manuals or measured by instruments—serving as the last line of defense that protects NEITZ’s uncompromising quality.
Behind IO Vega’s unwavering reliability stands the dedication of craftsmen who do not accept anything less than perfection.

Eye examination

Patient Friendly

Designed for Doctors. Gentle for Patients.
Shaping the Ideal of the Ophthalmic Care.

Patient examination

A Design That Brings Comfort and Reassurance to Patients

From the patient’s perspective, IO-Vega features a bright platinum gray body with a subdued, low gloss finish. This color choice conveys cleanliness and softness, helping ease tension during examination.
To address feedback from physicians - particularly the need for gentler illumination during fundus observation in newborns and young children – IO-Vega enables examinations at extremely low illumination levels below 10 lx to minimize pupil constriction. For situations requiring more precise diagnosis, IO-Vega also supports high brightness illumination up to 1,700 lx. This wide illumination range allows examinations to be tailored to each patient’s individual needs.

Flip-up mechanism

Flip-up Mechanism That Never Interrupts Communication

We believe that smooth communication with the patient is an essential function during examination. To support natural interaction throughout the diagnostic process, IO-Vega is equipped with a proprietary flip up mechanism. The optical unit positioned in front of the eyes can be smoothly lifted with one hand, thanks to its precision engineered hinge structure, instantly clearing the field of view. This allows doctors to maintain eye contact, observe facial expressions, and speak with consideration—all without removing the device.

Ball joint mechanism

Ball Joint Mechanism That Minimizes Patient Waiting Time

We developed an original ball joint mechanism that enables doctors to quickly and easily achieve their optimal field of view. By incorporating a movable joint with ball bearings, the optical unit can be smoothly adjusted up to ±3 degrees in all directions using the control knob, allowing for precise fine tuning. This makes it possible to instantly align the eyepiece position to the ideal spot, accommodating individual differences in head shape and facial structure. As a result, the time from putting on the device to beginning the examination is significantly reduced - allowing doctors to face the patient without delay.

Lightweight design

Lightweight, Well-Balanced Design for Lasting Comfort

Weighing approximately 470 g, IO-Vega achieves one of the lightest designs in its class of binocular indirect ophthalmoscopes. By re-examining the structure from the ground up, minimizing the number of components, and adopting lightweight materials such as magnesium alloy, significant weight reduction was achieved. To prevent front back imbalance during use, the device is engineered with careful attention to overall weight distribution. By distributing the mass of the optical unit and the rear power unit appropriately and positioning the center of gravity near the top of the head, IO-Vega provides a comfortable fit that feels natural throughout use. This balanced weight design helps doctors maintain optimal condition and stay focused during examinations.

For
medical students
& trainees

Teaching Mirror

180° Rotatable
Teaching Mirror

Charger

No Tabletop Charger Required
– Reduced Initial Setup Costs

Voyage Case

Easy to Carry
– NEITZ Original Voyage Case

Video

Engineering blueprints and technical drawings of IO-Vega

Development Story

A Flagship
That Embodies Technology
and Passion

Story 01

A Fresh Beginning—Inspired by Customer Conversations

In 2010, NEITZ took its first step toward a new challenge. Upon assuming the role of president, Takae Nishizawa made her first priority listening to customers, both in Japan and abroad.
"Make it lighter."
"Make it more beautiful."
"Make it easier to use."
These earnest requests from the medical field guided NEITZ in a new direction.
This marked the beginning of a journey of renewal, starting with the reconstruction of optical technology. NEITZ began refining its identity once again as "NEITZ of Optics."
"If we don't return to optics, there is no future." This statement, reflecting President Nishizawa's determination, became the guiding principle for the company's path forward. Customer voices became the true starting point for NEITZ's challenge toward the future.

FAQ

Specifications

Light Source
High color-rendering white LED CRI Ra: 90(min)/R9:80(min), 3000K(typ)
PD Adjustment
Eyepieces can be positioned to match the user's interpupillary distance.
Pupil Distance range: 52–73 mm
Aperture Switching
Four-step switching - Ø69, Ø50, Ø19 mm, and diffuser (at 500 mm)
Filter Switching
Four optical filters — UV, red free, yellow, and cobalt blue
Illumination Angle
Illumination angle can be adjusted vertically by turning the stepless adjustment knob.
Observation Optical Axis
Observation angle can be adjusted by sliding the knob left or right.
Eyepiece
Includes a +2D lens.
Brightness Control
Volume switch with ON/OFF click; includes a half click at the midpoint.
Illuminance
Max: 1100 lx / Min: <10 lx (at 500 mm), Max: 1700 lx / Min: 16 lx (at 400 mm)
Continuous
Illumination Time
Maximum brightness: approx. 3 hours. Medium brightness: approx. 8 hours.
Practical use: approx. 10 hours. (Based on internal standards.)
Battery Pack
Removable from the battery housing. Built in lithium-ion rechargeable battery (Rated: 3.7 V, 800 mAh, 2.96 Wh)
Battery Level Indicators
3 LED indicators on the battery housing: 3 green LEDs: High charge.
2 green LEDs: Medium charge. 1 green LED: Low charge. 1 orange LED: Very low charge
Charging Methods
USB Type C charging supported. Four methods available:
– Battery pack only, – Via battery housing, – Via Desktop Charger, – Via Wall Mounted Charger.
Charging Time
Approx. 2 hours
Charging Indicator
Bright green: Charging. Dim green: Fully charged.
Power Consumption
Discharging: 1.0 W. Charging: 6 VA.
Minimum Pupil Diameter
φ2mm
Headband Circumference
520 to 640mm
Dimensions
Main unit: 123 × 94 × 44 mm (excluding protrusions and headband)
Weight
Main unit: Approx. 470 g

Standard Set Configuration

  • IO-Vega Main Unit
  • Battery Pack Set (Battery Pack, AC Adapter, USB Type-C Cable)
  • User's Manual
  • Lens Cloth
  • Pouch (small)

Optional Accessories

  • 20D Aspherical Lens
  • Spare Battery Pack
  • Forehead Pad
  • Cushion Pads (2 in 1 package) Black, Blue, Pink, Orange
  • Carrying Case
  • Voyage Case

Set Components

IO-Vega Basic Set
Set-C (for Carry)
Basic Set + Carrying Case
Set-V (for Voyage)
Basic Set + Voyage Case