Experience this Beautiful World at its Best after Cataract Surgery

The eye has a lens that is necessary for focussing objects. It is normally transparent. Due to age and sometimes due to other reasons the lens loses its transperancy resulting in unclear vision. This is called CATARACT. This requires surgical removal and replacement by an artificial lens to restore transperancy of the visual axis (figure of human eye showing lens, photo of phacoemulsification, of monofocal and multifocal lenses)

Cataract surgery is now in most instances done under topical anaesthesia(no injection, only drops). There is no need of bandage, patients walk out with glasses. The visual recovery is very fast and patients get back to routine life much faster. It is a day care surgery. Typically it involves a couple of hours in hospital.

The cataract is removed from its bag and is replaced by an artificial lens which is inserted into this bag. The main purpose of placing a lens is to reduce the spectacle number. If a lens is not implanted the patient typically gets a plus number of 11 to 13.By implanting the lens, this problem is taken care of. The lenses are of two main types and their features are explained below so that one can form an informed decision on lens selection.Although the requirement of glasses is reduced after cataract surgery , It is important to understand that no Lens Guarantee a zero glass number after surgery.
These Lenses have Single Power.
Advantages :
  • Good distance vision without glasses
  • Good contrast (differentiation between shades)
  • Good night vision
  • No glare or haloes(see below)
  • More recommended for patients with retina and glaucoma problems less expensive
Disadvantages :
  • Reading requires a number of around plus 2.5 to 2.75
These Lenses have two or more powers (TRIFOCAL) incorporated in rings on the Lens.
Advantages :
  • Gives good deal of spectacle independance
  • Good distance vision without glasses
  • Good near vision(fine print may require glasses)
Disadvantages :
  • Glare and haloes: when a patient sees a bright object like a car headlight, street light, candle etc the light may appear brighter than normal and circles may be seen around the object. this phenomenon may reduce with time/ patients get used to it over time
  • Lesser contrast(in comparison to monofocal)
  • Lesser night vision(in comparison to monofocal)
Lens material is of two types HYDROPHOBIC and HYDROPHILIC. Hydrophobic lenses are better as there is lesser formation of a layer(PCO) behind these lenses in future. Hydrophilic lenses are associated with PCO which requires removal by a small laser(YAG) procedure at a later date
These are associated with more natural appearance of colours post surgery but slighty lesser contrast, while clear lenses may give a bluish or yellowish tinge to vision but have better contrast
ASPHERIC lenses have bettervisual clarity and night vision.
If a patient has a significant cylindrical number,these can be used to reduce the cylindrical number. Available in monofocal and multifocal variants.
Hydrophobic , Aspheric Lenses (Yellow/clear)(Available in Monofocal and Multifocal).

If you are ok Wearing Glasses for Reading ,Have a Lot of Driving Monofocal Lenses are Best Choice.

If you want more spectacle independence but are willing to adjust a little with Contrast and Haloes opt for Multifocal Lenses.

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