What Is Cataract ( Motia bindu ) ?
A cataract is an opacity (or cloudiness) in the lens of the eye. This restricts light passing through the eye and reaching the retina. When this occurs, vision is affected.
What Are The Symptoms?
Common symptoms of cataract are:
- Cloudy or blurry vision
- Light sensitivity from car headlights that seem too bright at night; glare from lamps or very bright sunlight; or the appearance of a halo around lights
- Poor or reduced night vision
- Double or multiple vision (this symptom often goes away as the cataract progresses)
- “Second sight” where near vision becomes possible without glasses again because of the cataract developing in the lens. This state is usually temporary, and followed by progressive loss of distant vision
- A need for frequent changes of glasses or contact lenses
What Causes Cataract (Motia bindu )?
The most common cause of cataracts is aging.
Others include:
- Inherited or developmental problems
- Health problems such as diabetes
- Medications such as steroids
- Trauma to the eye
Cataract (Motia Bindu) Surgery
Modern cataract or lens replacement surgery is one of most successful surgeries known. It is effective in restoring vision to most patients. The surgeon makes a tiny incision on the side of the cornea, removes the eye’s clouded natural lens after dissolving it (using a procedure known as Phacoemulsification) and then replaces it with an artificial ‘Intraocular Lens’ (IOL). Because the incision is very small, stitches are not required and the eye heals quickly, allowing the patient to return to routine lifestyle within a week. Modern cataract surgery is a safe outpatient procedure that barely takes
short span of time. Newer advancements such as microincisional phaco emulsification (MICS) have increased its safety even further.
What Is An IOL?
An Intraocular Lens (IOL) is the replacement lens that is surgically implanted in the eye to replace the existing natural clouded lens during cataract surgery.
Types Of IOL
An Intraocular Lens (IOL) is the replacement lens that is surgically implanted in the eye to replace the existing natural clouded lens during cataract surgery.
Monofocal IOL :
A standard mono-focal IOL has one point of focus, which is usually distance vision. If you choose standard IOLs, you will generally need glasses for near activities like reading. On the other hand, if your mono-focal IOLs are focused on near vision, you would need glasses to see distant objects clearly.
Toric IOL :
Astigmatism means that your eye is shaped more like and egg than a round ball. This irregular shape causes blurry vision.20% cataract cases have astigmatism, which requires them to wear cylindrical powered glasses after the cataract surgery with monofocal lenses. The toric lens is a special form of a single vision cataract lens that has astigmatism correction built right into the lens implant. If you like the idea of a single vision intraocular lens and have astigmatism, then a toric lens would be a great choice for you. A toric lens that corrects your astigmatism inside the eye does a better job of correcting your vision than a pair of glasses that sit out away from your face.
Multifocal IOL :
As against monofocal IOL, which focuses at only single distance; A multi-focal IOL contains multiple zones that focus light at a variety of distances, allowing you to see a continuous range of vision with or without glasses. This results in excellent visual acuity of close up and far away objects. Many patients report the ability to read small print and see distances, both without glasses. This lens can however, produce rings or halos around bright lights and may make it difficult to see in low light situations, such as driving at night. While most patients adapt to this effect over a period of several months.
Accomodating IOL :
An accommodating IOL is designed to flex much like your eye’s healthy, natural lens, providing a continuous range of vision as you constantly change focus on the world around you. This lens has the ability to “accommodate,” or change shape, allowing it to focus on both far and near objects. Most patients can function well without glasses for distance and casual reading, but may need glasses for fine print and very close work.
Aspheric IOL :
Traditional IOLs are spherical, meaning the front surface is uniformly curved. Aspheric IOLs are slightly flatter in the periphery. These lenses are designed to reduce spherical aberrations and provide better contrast sensitivity