The Ocushield filters blue light from your iPad while it protects your screen.

During daylight hours, lightwaves in the blue spectrum are actually very beneficial. They help make you more alert, improve your reaction times and generally elevate your mood. But as with almost anything, positives and negatives are situational. So when your eyes are flooded with blue light at night…well, let's just say it isn't nearly as beneficial.

Blue light, the type that emits from digital devices like iPhones, laptops and iPads, cues your brain to amp up activity…which is the opposite of what you want when you're scrolling through your iPad just before bed. In fact, blue light not only disrupts sleeps and throws off your body's circadian rhythm, it may knock us so out of whack that it might be contributing to the causation of headaches, eye irritation and fatigue, cancer, diabetes, heart disease, and obesity.

Developed by optometrists, the Ocushield was created to stamp out the blue light effect, a screen protector for your iPad that staves off the negative impacts of those emissions. Easily installed on your iPad, iPad Pro, or iPad Mini, the Ocushield reinforces your device screen with a super-strong, tempered glass covering that not only protects the screen itself, it blocks up to 90 percent of the blue light rays attacking your retinas.

While the removable oleophobic layer shields your device from dust and grime as well as scratches and scrapes, its true value is in safeguarding you. The Ocushield is officially recognized as an MHRA Class 1 Medical Device, the world's first and only medical rating for blue light screen protection.

Unlike other overlays or night mode settings that change your screen to look like one of those 80s PC orange-tinted displays, the Ocushield maintains your screen appearance just as before — only without the pesky blue light.

Right now, you can get an Ocushield that's perfectly fitted to suit virtually any model of iPad. Versions are sized to fit 7 and 9-inch iPads, the multiple generations of iPad Pros ranging from 10.2 up to 12.9 inches, as well as iterations of the iPad Mini.

In all cases, you can get an Ocushield at $10 off its regular price, down to just $35.99.