Can I read without a glasses? Can Laser treatment help?(PART 1)
Laser Blended Vision: Innovation of laser assisted refractive surgery in reading problems without glasses (Presbyopia/Lao Hua)
DR LEE MUN TOONG, CONSULTANT OPHTHALMOLOGIST KPJ ISH, MBBS (INDIA), MASTER IN OPTHALMOLOGY (UM)
PG DIPOLMA IN CATARACT & REFRACTIVE SURGERY (UK), MEMBERSHIP IN EUROPEAN SOCIETY OF CATARACT & REFRACTIVE SURGERY
Laser Blended Vision (LBV)is a sophisticated laser eye treatment which is used to treat presbyopia (ageing eyes or progressive loss of the ability to focus on nearby objects) or other age-related eye conditions.1 It can be used to help people independent from bifocal or varifocal spectacles due to ageing changes in the eye. It can used to treat short-sighted (myopia) or long-sighted (hyperopia) and astigmatism.
The LBV treatment is for a condition called presbyopia. Laser Blended Vision can be achieved through laser eye surgery, usually performed as FEMTO-LASIK, although surface laser eye surgery PRK or LASIK can be used to produce the effect. Laser Blended Vision works by increasing the depth of field of each eye through subtle changes in the optics of the corneal spherical aberration.2
The increase in depth of field allows for the eyes to be corrected in such a way that the dominant eye is set for distance and intermediate vision while the non-dominant eye sees best in the intermediate to near range. Because of the similarity in the visual performance of each eye in the intermediate range the brain is able to fuse the images between the eyes rendering a binocular visual environment. This is in contradiction to traditional monovision where the image disparity between the eyes is too high for image fusion by the brain and instead the brain needs to apply suppression of the blurred eye in order to perceive a clear visual field. In Laser Blended Vision, the eyes are effectively working together to allow good vision at near, intermediate and far, without the use of glasses. The effects of Laser Blended Vision tend to last between 5 and 10 years but can be further adjusted by enhancement procedures.
*Information from Wikipedia
Reference:
“Eye health: Presbyopia and your eyes”. Boots WebMD. WebMD LLC.Eye health: Presbyopia and your eyes.
Gifford P, Kang P, Swarbrick H, Versace P (September 2014). “Changes to corneal aberrations and vision after Presbylasik refractive surgery using the MEL 80 platform”. Journal of Refractive Surgery (Thorofare, N.J. : 1995). 30 (9): 598–603. doi:10.3928/1081597X-20140709-01. PMID 25019353
For more information, readers can call Lee Eye Specialist 05 254 4388 or email at ishkpj@gmail.com. Also visit their Facebook page: LASIK Services at KPJ Ipoh Specialist Hospital. Opening hours: 8.30am-5pm (Mondays to Fridays), 8.30am-1pm (Saturdays).
