Do you see double images of a single object? Do you have trouble focusing your eyes on the same point? If so, you may have a condition called diplopia, or double vision. This can affect your daily activities, such as reading, driving, or watching TV. Fortunately, there is a solution for this problem: prism glasses.
What are prism glasses?
Prism glasses are special eyeglasses that have prism lenses. Prism lenses are transparent optics that bend light in a specific direction. They do not have any focusing power, so they do not correct nearsightedness or farsightedness. However, they can help align the images that each eye sees and make them appear as one.
How do prism glasses work?
Prism glasses work by redirecting the light rays that enter your eyes. Normally, light rays should fall on the same spot on both retinas (the light-sensitive layer at the back of your eyes). This way, your brain can process a single image of what you see. But sometimes, due to various causes such as eye muscle weakness or nerve damage, your eyes may not point at the same target. This results in light rays falling on different spots on your retinas and creating double images.
Prism glasses compensate for this eye misalignment by shifting the light rays to make them fall on the same spot on both retinas. For example, if your eyes tend to drift outward (exotropia), prism glasses will bend the light rays inward to bring them closer together. If your eyes tend to drift inward (esotropia), prism glasses will bend the light rays outward to move them apart.
Prism glasses are measured and prescribed in prism diopters (PD), which indicate how much they bend light. The higher the PD number, the stronger the prism effect. The axis of the prism also matters: it can be horizontal (base-in or base-out), vertical (base-up or base-down), or oblique (a combination of horizontal and vertical).
Who needs prism glasses?
Prism glasses are mainly used to treat binocular vision disorders, which affect how your eyes work together as a team. Some common binocular vision disorders that can cause double vision are:
- Strabismus: A condition where one or both eyes turn inward (crossed eyes), outward (wall-eyed), upward (hypertropia), or downward (hypotropia).
- Convergence insufficiency: A condition where your eyes have difficulty turning inward when looking at near objects.
- Divergence insufficiency: A condition where your eyes have difficulty turning outward when looking at far objects.
- Fourth nerve palsy: A condition where one of the nerves that control eye movement is damaged or inflamed.
- Sixth nerve palsy: A condition where another nerve that controls eye movement is damaged or inflamed.
Other conditions that can cause double vision include:
- Brain injury
- Multiple sclerosis
- Thyroid disease
- Myasthenia gravis
- Graves’ disease
If you experience double vision or other symptoms such as blurred vision, headaches, eye strain, dizziness, nausea, or difficulty reading or driving, you should consult an eye doctor as soon as possible. They will examine your eyes and determine if you need prism glasses or other treatments.
How to get prism glasses?
To get prism glasses, you need a prescription from an eye doctor who specializes in binocular vision problems. They will perform various tests to measure how much and in what direction your eyes are misaligned and how much prism correction you need.
You can then choose from different types of frames and lenses for your prism glasses. You may want to consider factors such as comfort, durability, style, and cost when making your decision.
You may also need some time to adjust to wearing prism glasses because they change how you perceive depth and distance. You may feel dizzy or disoriented at first, but this should go away after a few days.
Benefits of prism glasses
Prism glasses can provide many benefits for people with double vision and other binocular vision problems. Some of these benefits are:
- Improved visual acuity and clarity
- Reduced eye strain and fatigue
- Enhanced depth perception and spatial awareness
- Increased comfort and confidence
- Better quality of life
Prism glasses are special eyeglasses that have prism lenses that bend light in a specific direction. They help correct double vision caused by various conditions that affect how your eyes work together. Prism glasses can improve your vision quality, comfort, and confidence. If you need prism glasses, you should consult an eye doctor who can prescribe the right amount and axis of prism correction for you.
If you are looking for a place to buy prism glasses online, you may want to check out eyeisland.com. Eyeisland.com sells most of their eyeglasses with prism prescription options. You can choose from a wide range of frames and lenses that suit your style and budget. Eyeisland.com will help you customize your prism lenses according to your prescription and deliver them to your doorstep.
Visit eyeisland.com today and get ready to see the world in a new light with prism glasses!