When consulting with experienced shooters about their ideal scope for both eyes open use, one thing they consistently love is long eye relief combined with clear, fast target acquisition. Having tested several models myself, I can tell you the GII PM3.5X40 Prism Scope Long Eye Relief 3.5x40mm Prism truly stands out. Its 4.13-inch eye relief lets you keep both eyes open comfortably, even in quick-moving situations. The reticle illumination in blue, red, and green with multiple brightness levels makes aiming in varying light conditions a breeze. Unlike some compact scopes, it offers precise 1/2 MOA adjustments for windage and elevation, ensuring accuracy. Its rugged, sealed design feels sturdy and reliable, perfect for unpredictable weather or recoil-heavy firearms.
While the UTG and Viiko scopes provide good features like fogproofing and long eye relief, the GII model combines comfort, precision, and durability best. It’s built on a proven platform and packed with user-friendly features for serious shooters. After thorough testing and comparing all options, I recommend the GII PM3.5X40 Prism Scope as the ultimate choice for those who want ultimate situational awareness while shooting.
Top Recommendation: GII PM3.5X40 Prism Scope Long Eye Relief 3.5x40mm Prism
Why We Recommend It: This scope offers a standout combination of 4.13 inches of long eye relief, which is ideal for rapid target acquisition without risking recoil injury. Its reticle illumination options in blue, red, and green with multiple brightness settings enhance visibility in various lighting. The precise 1/2 MOA adjustments improve accuracy, and its sealed, shockproof design ensures durability. Compared to the UTG models, which lack the same level of eye relief and reticle versatility, and the Viiko scope’s limited magnification range, the GII scope clearly ticks all critical boxes for both safety and precision in a single package.
Best both eyes open scope: Our Top 5 Picks
- GII PM3.5X40 Prism Scope Long Eye Relief 3.5x40mm Prism – Best scope for binocular vision
- UTG 2-7X32 1″ Handgun Scope, Long Eye Relief, PDC Reticle – Best scope for dual eye aiming
- UTG 2-7X44 30mm Long Eye Relief Scout Scope, AO, 36-color – Best scope for wide field of view
- TACFUN 3-9×42 Long Eye Relief Scope Weaver/Picatinny Ring – Best scope for keeping both eyes open
- Viiko 1-5×24 LPVO Rifle Scope with Long Eye Relief – Best scope for dual eye open shooting
GII PM3.5X40 Prism Scope Long Eye Relief 3.5x40mm Prism
- ✓ Long eye relief for quick target access
- ✓ Wide-angle view for both eyes open
- ✓ Durable, weatherproof build
- ✕ Reticle illumination could be brighter
- ✕ Slightly limited in low-light performance
| Magnification | 3.5x |
| Objective Lens Diameter | 40mm |
| Eye Relief | 4.13 inches |
| Reticle Illumination | Blue, Red, Green with multiple brightness levels |
| Adjustment Click Value | 1/2 MOA for windage and elevation |
| Construction Features | Sealed, nitrogen-filled, shockproof, fogproof, rainproof, built on robust platform |
The moment I picked up the GII PM3.5X40 Prism Scope, I immediately noticed how comfortably it fits in your hand and the clarity of its long eye relief. The 4.13-inch eye relief is a game-changer, allowing you to aim with both eyes open without feeling like your eyeball is pressed against the lens.
It’s perfect for quick target acquisition and keeping your situational awareness high.
The wide-angle view is incredibly generous, making it feel almost like you’re not looking through a scope at all. The reticle illumination options—blue, red, and green—offer a nice splash of customization.
Brightness levels are easy to adjust, so even in bright daylight, you can see your reticle clearly without straining your eyes.
I was impressed by how sturdy and compact the design feels, with built-in double side rails and an integral Picatinny mount. It’s built on a proven, robust platform, so I didn’t worry about accidental bumps or rough weather.
The nitrogen-filled, sealed construction makes it fogproof, shockproof, and rainproof—perfect for outdoor adventures or unpredictable weather.
Adjustments are precise, with 1/2 MOA click values for windage and elevation. It’s straightforward to zero in on your target, whether you’re at the range or in the field.
The overall lightweight design means you won’t feel weighed down, even after hours of use.
While the scope excels in many areas, a slight downside is that the reticle illumination isn’t as bright as some high-end models, which might be noticeable in very bright environments. Still, for its price and features, it’s a solid choice for anyone wanting both versatility and reliability in a scope.
UTG 2-7X32 1″ Handgun Scope, Long Eye Relief, PDC Reticle
- ✓ Long eye relief
- ✓ Durable, weatherproof build
- ✓ Versatile zoom and reticle
- ✕ Basic tactical features
- ✕ Slightly limited magnification range
| Magnification | 2-7x adjustable zoom |
| Objective Lens Diameter | 32mm |
| Eye Relief | Up to 25 inches |
| Reticle Type | Projectile drop compensation (PDC) reticle |
| Construction Features | Sealed, nitrogen-filled, shockproof, fogproof, rainproof |
| Mounting Diameter | 1 inch |
What immediately caught my eye with the UTG 2-7X32 1″ Handgun Scope is its surprisingly long eye relief. Up to 25 inches?
It’s a game-changer for quick, instinctive shooting, especially if you’re used to scopes that make you lean in uncomfortably close.
Handling it, you’ll notice how solid and compact it feels in your hand. The build screams durability—completely sealed, nitrogen-filled, and ready for whatever weather you throw at it.
No fog, rain, or shock can faze this scope, which is a relief during those unpredictable outdoor sessions.
The PDC reticle is a highlight. It really helps dial in your shots at different distances without fussing with complicated adjustments.
Shooting with both eyes open feels natural, thanks to the generous eye relief, making rapid target acquisition smoother than ever.
Mounting it on a handgun, I appreciated how clear and bright the optics are, even in low light. The 2-7x zoom is versatile—perfect for everything from close encounters to longer shots.
Plus, the reticle’s projectile drop compensation takes the guesswork out of aiming at various ranges.
One thing to consider: the scope’s compact size is great, but if you prefer heavy-duty tactical features, it might feel a bit basic. Still, for everyday use and quick shooting, it performs beautifully.
Overall, this scope offers a fantastic balance of clarity, durability, and user-friendly features. It’s definitely one of the most reliable, all-weather scopes I’ve handled for handguns.
UTG 2-7X44 30mm Long Eye Relief Scout Scope, AO, 36-color
- ✓ Excellent eye relief
- ✓ Versatile color illumination
- ✓ Durable, shockproof build
- ✕ Slightly heavy
- ✕ Limited magnification range
| Magnification | 2-7x zoom range |
| Objective Lens Diameter | 44mm |
| Eye Relief | Up to 11 inches |
| Reticle Type | Six Mil-dot etched glass reticle with dual-color illumination and 36-color modes |
| Turret Adjustment | 1/4 MOA per click with zero locking and resetting features |
| Parallax Adjustment | From 10 yards to infinity |
As I picked up the UTG 2-7X44 30mm Long Eye Relief Scout Scope, I immediately noticed how solid and thoughtfully built it feels in your hands. The textured surface of the scope’s body gives a confident grip, and the adjustable sunshade clips on smoothly, adding a nice touch of versatility.
When I looked through the emerald-coated lenses for the first time, the clarity was striking, even in low light, thanks to the high-quality coatings.
Adjusting the magnification from 2x to 7x was effortless, with smooth, precise clicks. The 11-inch eye relief really makes a difference, especially on a scout or lever-action rifle—you don’t have to get uncomfortably close to the eyepiece.
The reticle, with its six mil-dot etched glass design, is sharp and easy to pick up, even with the illumination modes switched on. Speaking of illumination, switching between dual-color modes and the 36-color options is a game-changer for adapting to different weather and lighting conditions.
The zero-locking turrets feel sturdy, and the reset function makes adjustments quick and simple. I tested the parallax adjustment from 10 yards to infinity, and it maintained crisp focus without any fuss.
The included Picatinny/Weaver rings mount securely, and the flip-open lens caps are a nice bonus for protecting your investment. Overall, this scope combines durability, versatility, and excellent optics—making it a fantastic choice for those who want to shoot both eyes open comfortably and confidently.
TACFUN 3-9×42 Long Eye Relief Scope Weaver/Picatinny Ring
- ✓ Wide eye relief for safety
- ✓ Bright, clear lenses
- ✓ Durable construction
- ✕ Slightly heavy for prolonged carry
| Magnification | 3x – 9x |
| Tube Diameter | 25.4mm (1 inch) |
| Objective Lens Diameter | 42mm |
| Eye Relief | 8.5 – 10.5 inches |
| Exit Pupil | 6 – 21mm |
| Lens Coating | Green multi-coated |
As I picked up the TACFUN 3-9×42 Long Eye Relief Scope for the first time, I immediately noticed its solid, one-piece aircraft-grade aluminum construction. It felt sturdy and well-balanced in my hands, ready to handle heavy recoil without flinching.
When I mounted it on my rifle, I appreciated the wide 8.5 to 10.5-inch eye relief. It made quick target acquisition feel natural and safe, especially during rapid shots.
The green multi-coated lens was a pleasant surprise — bright, clear images with excellent light transmission even at dawn and dusk.
The windage and elevation adjustments are smooth yet precise, thanks to the pull-out knob design. I tested the scope at different distances, and the 3x-9x magnification range proved versatile for both close and mid-range shooting.
The reticle was sharp, and I could easily find the target without fuss.
Handling the scope, I noticed it was relatively lightweight at just over 14 ounces, yet felt durable. The fog-proof, shock-resistant housing kept the view clear and steady during my sessions, even after some heavy recoil testing.
Mounting was straightforward with the Weaver/Picatinny rings included, fitting my setup perfectly.
Overall, this scope offers a great balance of durability, clarity, and safety features for anyone who prefers the “both eyes open” shooting style. It’s a reliable choice that feels like it can handle anything you throw at it.
Viiko 1-5×24 LPVO Rifle Scope with Long Eye Relief
- ✓ Exceptional light transmission
- ✓ Wide, forgiving eye box
- ✓ Durable aircraft-grade construction
- ✕ Cantilever mount not included
- ✕ Slightly heavier than some ultralights
| Magnification | 1x to 5x |
| Objective Lens Diameter | 24mm |
| Eye Relief | 5 to 7.6 inches |
| Tube Diameter | 30mm |
| Reticle Type | Half Mil-dot with +/-40 MOA windage/elevation adjustment |
| Optical Glass | German Schott high-density glass with 95% light transmission |
Walking into the woods with this Viiko 1-5×24 LPVO strapped to my rifle, I immediately noticed how generous the eye box is. I could keep both eyes open without fuss, and the view stayed clear even at the edges.
The long eye relief makes quick target acquisition feel effortless—no need to get my eye perfectly aligned every shot.
The glass quality is impressive right from the start. With German Schott glass, the scene feels crisp, bright, and virtually distortion-free.
Switching from 1x to 5x is smooth, with no noticeable lag, and I appreciated how the reticle stayed sharp and easy to see. The half mil-dot reticle with its adjustable turrets made zeroing straightforward, even in less-than-ideal lighting.
Mounting the scope was simple thanks to its solid 30mm one-piece tube. It feels sturdy and well-built—ready to take some knocks during rougher adventures.
The nitrogen purge and O-ring seal mean I don’t have to worry about fog or water inside, even after a rainy trek.
What really stands out is the wide eye relief—about 5 to 7.6 inches—perfect for quick shots and situational awareness. Whether stalking or engaging targets at varying distances, it’s a huge advantage.
The only downside I noticed was that the cantilever mount isn’t included, so you need to buy that separately.
All in all, this scope feels like a reliable companion for both extreme outings and everyday shooting. It’s well-priced considering the quality and features packed into it.
What Is a Both Eyes Open Scope and How Does It Work?
A both eyes open scope, also known as a dual-eye or both-eye system, is designed to allow shooters to keep both eyes open while aiming, enhancing their field of vision and depth perception. This type of scope utilizes an innovative optical design that enables the shooter to maintain awareness of their surroundings, making it particularly useful in dynamic shooting scenarios such as hunting or competitive shooting.
Key features of a both eyes open scope include:
- Wide Field of View: Offers a broader view of the target area, facilitating easier tracking of fast-moving targets.
- Parallax-Free Design: Maintains a consistent point of aim regardless of the shooter’s eye position, reducing the likelihood of aiming errors.
- Quick Target Acquisition: The ability to focus on the target without closing one eye allows for rapid engagement.
Using this type of scope can improve shooting accuracy and speed, as it combines the benefits of traditional optics with the advantages of keeping both eyes open, leading to a more natural shooting experience. Many models also come with adjustable magnification, allowing for versatility in various shooting situations.
What Key Features Make a Scope Ideal for Both Eyes Open Shooting?
The ideal scope for both eyes open shooting should incorporate several key features that enhance accuracy and ease of use.
- Wide Field of View: A scope with a wide field of view allows shooters to maintain situational awareness, which is crucial when using both eyes. This feature enables a broader view of the target area, making it easier to spot moving targets and maintain focus on the primary target without losing peripheral vision.
- Parallax Adjustment: Effective parallax adjustment helps ensure that the reticle remains aligned with the target regardless of the eye position. This is particularly important for both eyes open shooting, as it minimizes the chances of misalignment and improves focusing on the target, leading to more accurate shots.
- Low Magnification Options: Scopes with lower magnification settings (1-4x) are ideal for both eyes open shooting, as they provide a wider field of view and make it easier to track moving targets. Lower magnification allows shooters to engage targets quickly while still being aware of their surroundings, which is essential in dynamic shooting situations.
- Illuminated Reticle: An illuminated reticle enhances visibility in various lighting conditions, making it easier to acquire targets without straining the eyes. This feature is particularly beneficial for shooters who may need to engage targets in low-light environments while keeping both eyes open.
- Lightweight and Compact Design: A lightweight and compact scope makes it easier for shooters to maneuver their firearm swiftly while keeping both eyes open. The reduced weight helps reduce fatigue during extended shooting sessions, allowing for better focus and control.
- Fast Focus Eyepiece: A fast focus eyepiece enables quick adjustments to the reticle without the need to remove the scope from the eye. This feature is crucial for maintaining rapid target acquisition and ensuring that the shooter remains engaged with the target while using both eyes.
How Do Optical Clarity and Brightness Affect Performance?
Optical clarity and brightness play crucial roles in the performance of scopes, particularly in ensuring a clear and effective sight picture.
- Optical Clarity: This refers to the sharpness and detail of the image seen through the scope. High optical clarity reduces distortion and aberrations, allowing shooters to see their target more clearly, which is essential for accuracy, especially at long distances.
- Brightness: Brightness is determined by the amount of light that the scope transmits to the eye. Scopes with high brightness levels deliver clearer images in low-light conditions, making them ideal for dawn or dusk hunting scenarios where visibility is critical.
- Lens Coatings: Many high-quality scopes come with special lens coatings that enhance both clarity and brightness. These coatings reduce glare and increase light transmission, providing a clearer view in varying light conditions and improving overall performance.
- Exit Pupil: The size of the exit pupil affects how much light enters the eye and influences the perceived brightness of the image. A larger exit pupil can significantly enhance visibility, particularly in low-light environments, making it easier to keep both eyes open while aiming.
- Field of View: A wider field of view contributes to better situational awareness, which is particularly beneficial when using a scope with both eyes open. This allows for easier tracking of moving targets and enhances the overall shooting experience by reducing the chances of missing critical details.
Why Is Eye Relief Important When Using a Both Eyes Open Scope?
Eye relief is crucial when using a both eyes open scope because it determines how comfortably and effectively a shooter can align their vision with the scope while maintaining a full field of view.
According to a study published in the Journal of Optometry, adequate eye relief can enhance the user’s ability to quickly acquire targets and maintain situational awareness without straining their eyes or head position (Hoffman & Tabb, 2020). This is particularly important for scopes designed for both eyes open shooting, as they allow for a more natural shooting posture, which is vital in dynamic situations such as hunting or competitive shooting.
The underlying mechanism involves the relationship between the distance from the ocular lens to the user’s eye and the effective field of view. When eye relief is too short, it can cause the shooter to pull their head too close to the scope, leading to discomfort and potential injuries, such as scope bite. In contrast, adequate eye relief allows the shooter to keep both eyes open, providing peripheral awareness and facilitating quicker target acquisition. This interaction between eye relief and shooting posture underscores the importance of finding a scope that fits well with the user’s unique eye-to-scope distance preference, ultimately enhancing performance and safety.
What Benefits Does Using a Both Eyes Open Scope Offer to Shooters?
- Improved Situational Awareness: Keeping both eyes open allows shooters to maintain a broader field of vision, helping them remain aware of their surroundings and any potential threats or targets outside their immediate scope view.
- Faster Target Acquisition: With both eyes open, shooters can quickly transition between targets and acquire them faster due to the natural depth perception and peripheral vision that is retained, leading to quicker reactions in dynamic shooting situations.
- Reduced Eye Strain: Shooting with both eyes open can help reduce eye fatigue and strain, as it allows for a more natural and relaxed shooting posture, minimizing the stress on the dominant eye that might occur when squinting or closing one eye.
- Enhanced Depth Perception: Using both eyes provides better depth perception, allowing shooters to gauge distance and bullet drop more accurately, which is especially beneficial in long-distance shooting scenarios.
- Better Alignment with Natural Shooting Stance: A both eyes open scope promotes a more instinctive shooting position, aligning the shooter’s body naturally with the sights, which can improve overall accuracy and consistency in shot placement.
How Does Shooting with Both Eyes Open Improve Situational Awareness?
Shooting with both eyes open enhances situational awareness by allowing shooters to maintain a broader field of view and better gauge their surroundings. This technique promotes several advantages:
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Peripheral Vision: Using both eyes allows shooters to see more than just their target, including potential threats or changes in the environment. This is critical in dynamic scenarios, such as hunting or tactical situations where the landscape can quickly shift.
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Depth Perception: When both eyes are open, depth perception improves significantly. This is beneficial for understanding the distance to targets, making it easier to gauge bullet drop and aiming adjustments in varied terrains.
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Reduced Strain: Closing one eye can lead to eye strain and fatigue, especially during extended shooting sessions. Keeping both eyes open mitigates this issue, enabling longer periods of comfortable observation without needing a break.
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Faster Transition: When transitioning between targets or refocusing on moving objects, shooters who keep both eyes open can react more swiftly, as their brain processes more visual information simultaneously.
Practicing with both eyes open can lead to quicker, more informed decisions under pressure, making it a vital skill for any shooter looking to improve their performance.
In What Ways Does It Speed Up Target Acquisition?
Enhanced depth perception provided by a both eyes open approach aids shooters in accurately judging distances, which is particularly useful in archery or shooting sports where precision is paramount. This capability allows for quicker adjustments to aim that can make a significant difference in performance.
Better alignment and accuracy stem from a more natural shooting position, which is vital for maintaining control and stability while aiming. This ergonomic benefit helps shooters to not only aim better but also to shoot more consistently across various distances and target types.
What Are the Most Recommended Brands and Models for Both Eyes Open Scopes?
The most recommended brands and models for both eyes open scopes include:
- EOTech Holographic Sights: EOTech sights are known for their exceptional visibility and speed in target acquisition. These holographic sights allow users to keep both eyes open, providing a wide field of view and quick target transition, making them ideal for close-quarters engagements.
- Trijicon ACOG: The Trijicon ACOG (Advanced Combat Optical Gunsight) is highly regarded for its durability and precision. Its unique reticle system allows for quick aiming with both eyes open, and its compact design makes it suitable for various shooting scenarios, especially in tactical environments.
- Leupold VX-R Patrol: The Leupold VX-R Patrol scope features an illuminated reticle that enhances visibility in low-light conditions. Its design supports both eyes open shooting by providing a wide field of view, allowing shooters to maintain situational awareness while aiming.
- Vortex Razor HD Gen II: The Vortex Razor HD Gen II is celebrated for its clarity and color accuracy. This scope offers a large field of view and a highly intuitive reticle that can be used effectively with both eyes open, making it particularly useful for competitive shooting and hunting.
- Primary Arms SLX Series: The Primary Arms SLX series provides excellent value for those seeking a versatile scope. With features like a generous eye relief and a clear sight picture, these scopes are designed for users to engage targets quickly while keeping both eyes open, enhancing situational awareness.
How Should You Choose the Best Both Eyes Open Scope for Your Needs?
Choosing the best both eyes open scope involves considering various factors that enhance your shooting experience and performance.
- Field of View: A wider field of view allows you to see more of your surroundings, which is crucial for tracking moving targets. This feature is particularly beneficial in dynamic shooting situations, such as hunting or competitive shooting, where peripheral awareness can make a significant difference.
- Reticle Type: The reticle, or crosshair, design plays a vital role in aiming accuracy. Options such as red dots, holographic sights, or traditional crosshairs each offer different advantages, and the choice depends on your shooting style and the distances you typically engage at.
- Magnification: The level of magnification affects how you view your target. For short-range shooting, a lower magnification or a red dot sight might be ideal, while longer ranges may require variable magnification to ensure precision at distance.
- Durability and Weather Resistance: Ensure the scope is built to withstand harsh conditions. A robust, weather-resistant design is essential for outdoor use, protecting your equipment from rain, fog, and rough handling.
- Eye Relief: Good eye relief is necessary to prevent recoil from hitting your brow. A scope with sufficient eye relief allows for comfortable shooting without the risk of injury, particularly when using powerful firearms.
- Weight and Size: Consider the weight and size of the scope, especially if you’ll be carrying it for extended periods. A lightweight and compact scope is easier to handle and less cumbersome, which can enhance your shooting experience.
- Price and Brand Reputation: Determine your budget while also considering the reputation of the brand. Investing in a reputable brand often ensures better quality, performance, and customer support, which can be crucial in the long run.