Contact lens clinic
Step into a world of crystal-clear vision and personalized eye care. Our expert optometrists blend cutting-edge technology with compassionate service, ensuring your comfort and visual precision with every consultation, fitting, and lens selection.
1. Monofocal Lens
Monofocal Lenses: The Classic Choice for Clear Vision
Monofocal lenses are the most traditional and widely used type of intraocular lenses (IOLs) in cataract surgery. These lenses are designed to provide clear vision at one specific distance – usually either far, intermediate, or near vision.
How Monofocal Lenses Work:
Unlike your natural lens, which can focus at multiple distances, a monofocal lens has a single point of focus. Most patients choose to have their monofocal lenses set for distance vision and use reading glasses for close-up tasks. This option typically provides the sharpest possible vision at the chosen distance.
Key Benefits
2. Scleral lens
Scleral lenses are a type of contact lens that you wear on your eyes. Unlike the more common soft contact lenses that mainly rest on the cornea of your eye, scleral lenses are larger and cover more of the eye surface. They extend beyond the cornea and cover parts of the surrounding sclera (the white of your eye).
Scleral lenses are rigid gas-permeable (RGP) lenses — sometimes known as “hard” lenses — meaning they hold their shape, but oxygen can still pass through them. The center disk of the lens “vaults” (jumps) over the cornea and doesn’t touch the corneal surface at all. The small gap between the cornea and the inner surface at the center of a scleral lens can hold saline or another liquid, which is there to cover your cornea.
The upper and lower edges of scleral lenses actually sit underneath your eyelids, so there’s very little risk of them falling out or something getting underneath them. And because the sclera isn’t as sensitive as the cornea, you’re less likely to notice them once they’re in.
Why are scleral lenses used?
Eye specialists prescribe scleral lenses for many diseases. These include managing problems on the surface of your eye itself and eye symptoms from other conditions. And scleral lenses can sometimes correct vision in ways that soft contact lenses can’t.
These characteristics of how scleral lenses work make them ideal for treating:
- Corneal diseases, especially corneal ectasia conditions like pellucid marginal degeneration and bulging or cone-shaped cornea (keratoconus).
- Severe refractive errors.
- Eye surface conditions due to other causes, including graft vs. host disease (GvHD), Stevens-Johnson syndrome or multiple types of keratitis.
- Severe dry eye.
- Scarring or corneal damage from injuries.
- Disorders that affect your eyelid or the orbit of (the area surrounding) your eye.
- Conditions that require applying medication to your eye surface and keeping it therE
3. Ortho-k lens
Ortho-k lenses, or orthokeratology lenses, are rigid, gas-permeable contact lenses that temporarily reshape the cornea to improve vision. It’s benefits are –
- Correct refractive errors
- Slow or stop the progression of myopia
- Be used to correct children’s vision
How they're worn
Ortho-k lenses are worn overnight and removed in the morning. They’re usually worn only part of the day, and some users may only need to wear them one night out of every two or three nights.
Adaptation
The cornea adapts to the new shape within hours to days, but it can take 2–3 weeks for full adaptation. Vision may be affected during this initial period.
4. Multifocal lens
Multifocal lenses have multiple prescriptions in one lens to assist in seeing at different distances. The main types of multifocal lenses are:
- bifocals:prescribed for near and far vision,
- trifocals:prescribed for vision at near, arms-length, and far distances,
- progressives:multifocal with a seamless transition between distances, and
- special occupational lenses.
Advantages to multifocals-
- Multifocals offer a range of benefits, among them:
- Better visual acuity for the range of distances from near to far
- A less abrupt switch between prescriptions
- The ability to see in most conditions without extra eyewear
5. Toric lens
- Toric contact lenses are a type of contact lens specifically designed to correct astigmatism.Astigmatism is a type of refractive error, in which a misshapen lens or cornea causes vision issues.
- A person will only need toric contact lenses if they have astigmatism and on the recommendation of an optometrist.
- Toric contact lenses work by helping correct this refractive error. The benefits of toric lenses are that they correct astigmatism, are convenient and have a wide range of vision.
- Key characteristics of toric lenses include:
- Unique Design
- They have two different powers at right angles to each other
- The lens has a specific orientation to correctly align with the eye’s irregular shape
- They are weighted or designed to stabilize and prevent rotation on the eye
6. Trichromate Lens
What Are Trichromate Lenses:
Trichromate lenses are specialized eyeglass lenses designed to enhance your color vision experience. These advanced lenses help your eyes process colors more effectively by filtering light in specific ways, potentially improving how you see and distinguish between different colors.
How Do They Work?
Your eyes naturally have three types of color receptors (called cone cells) that help you see red, green, and blue colors. Trichromate lenses work by selectively filtering light wavelengths to help these cone cells function more efficiently together. Think of them as color-enhancing filters that help your eyes process colors more distinctly.
Benefits of Trichromate Lenses
Who Can Benefit?
Trichromate lenses may be particularly helpful if you:
What to Expect
When you first start wearing trichromate lenses, you may notice:
– Colors appear more vivid and distinct
– An initial adjustment period of 1-2 weeks
– Improved ability to distinguish between similar colors
-Better overall visual comfort
Important Notes
– These lenses are not a cure for color blindness
– Individual results may vary
– A thorough eye examination is required before prescription
– Regular follow-up appointments help ensure optimal results
Dr. Palak Agrawal
MBBS, DNB (Gold medalist), FICO, FRS,MNAMS , MRCS (Ed)
Cataract & Refractive surgeon
