What Are Single Vision Lenses?

Single vision lenses are a cornerstone of clear vision, offering a focused solution for individuals with specific vision demands. They are designed to correct vision for a single distance, whether it’s close, intermediate, or distance. This simplicity makes them a popular choice for those seeking clear, uncomplicated vision correction. In this article, we will define single vision lenses, comparing them with bifocal lenses and multifocal progressive lenses to highlight their unique benefits. We will delve into the advantages of single vision lenses, including their affordability, ease of adaptation, and suitability for specific vision tasks. You will have a comprehensive understanding of single vision lenses and consider if you should them.

What Are Single Vision Lenses?

Single vision glasses are a type of eyewear designed to correct vision for a specific distance, whether it’s for near, intermediate, or distance vision. Unlike multifocal progressive lenses, which have multiple prescriptions in one lens to address different vision needs, single vision lens has a single prescription throughout the entire lens. These glasses are commonly prescribed to correct common vision problems such as nearsightedness (myopia), farsightedness (hyperopia), and astigmatism. They provide clear vision at one fixed distance, making them suitable for tasks such as reading, driving, or working on a computer, depending on the prescription.

Common Vision Problems That Single Vision Lenses Can Solve

• Nearsightedness (Myopia)

Nearsightedness, also known as myopia, is a common refractive error where close objects appear clear, but distant objects appear blurry. This occurs when the eyeball is too long or the cornea is too curved, causing light to focus in front of the retina instead of directly on it. People with myopia may have difficulty seeing distant objects, such as road signs or the board in a classroom, but can typically see objects up close without any issues.

• Farsightedness (Hyperopia)

Farsightedness can also be called hyperopia, is a refractive error where distant objects are seen more clearly than nearby objects. This occurs when the eyeball is too short or the cornea is too flat, causing light to focus behind the retina instead of directly on it. People with hyperopia may have difficulty with tasks that require close vision, such as reading or sewing, but can typically see distant objects clearly.

• Astigmatism

Astigmatism is a refractive error caused by an irregularly shaped cornea or lens, which prevents light from focusing evenly on the retina. Instead of being spherical like a basketball, the cornea or lens may be shaped more like a football, causing distorted or blurred vision at all distances. People with astigmatism may experience symptoms such as blurry vision, eye strain, headaches, and difficulty driving at night.

Types of Single Vision CR39 Prescription Lenses

Single vision glasses are available in various lens materials, coatings, and designs to suit different preferences and needs.

• Single Vision 1.50 Index Lenses

Single vision 1.5 lenses typically accommodate prescriptions ranging in mild, with powers ranging from -2.00 to +2.00. They are generally affordable, offering a cost-effective vision correction option.

• 1.57 Mid Index Single Vision Lenses

1.56 standard single vision lenses are ideal for individuals with moderate prescriptions. They typically accommodate a power range from -4.00 to +4.00, making them suitable for correcting a wide range of refractive errors. These lenses are often priced competitively compared to higher index lenses, providing an affordable yet high-quality vision correction solution.

• 1.59 Index Single Vision Clear Lenses

1.59 polycarbonate lenses are suitable for individuals with moderate to high prescriptions. They typically accommodate a power range from -6.00 to +6.00, making them suitable for correcting a wide range of refractive errors. The lenses are considered premium-quality and may be priced slightly higher than standard index lenses.

• Single Vision High Index Lenses

1.60, 1.67 and 1.74 index lenses are called high index lenses, they are suitable for individuals with moderate to very high prescriptions . They typically accommodate a wide range of powers, from -14.00 to +10.00. High index lenses are more expensive than standard plastic lenses due to their advanced technology and thinner profile.

Single Vision Lenses vs. Bifocal

Bifocal Lenses are designed to provide clear vision at two different distances – near and far – in a single lens. These lenses have a distinct line separating the two prescription powers, with the upper part of the lens used for distance vision and the lower part for near vision. Bifocal lenses are typically prescribed for individuals with presbyopia, a common age-related (about 40+ years old) condition that affects near vision.

Single Vision vs. Progressive Lenses

Progressive Lenses offer a seamless transition clear vision between near, intermediate, and distance vision without the need for separate pairs of glasses. They provide a more natural vision experience and eliminate the visible lines associated with bifocal or trifocal lenses. However, they may have a longer adaptation period and are typically more expensive than single vision lenses.

• Do I Need Progressive Lenses or Single Vision?

Choosing between progressive and single vision lenses depends on your vision needs and preferences. If your age is older or you require correction for multiple distances or prefer the convenience of one pair of glasses, progressive lenses may be the better option. However, if you have a single vision need and prioritize simplicity and lower cost, single vision lenses may be more suitable.

How Much Do Single Vision Lenses Cost?

Single vision lenses offer a simple and affordable solution for individuals with vision correction needs. The cost of single vision lenses can vary based on factors such as the lens material, lens features (like coatings), and where you purchase them. Generally, single vision lenses are more budget-friendly compared to multifocal or progressive lenses. They provide clear vision at a single distance, making them suitable for tasks like reading, driving, or computer work, depending on your prescription. Overall, single vision lenses are a cost-effective option for those seeking clear vision correction.