News & Events

January is Glaucoma Awareness Month!

What is Glaucoma?

Glaucoma is increased pressure within the eyes, eventually leading to gradual blindness. No noticeable symptoms of glaucoma occur in its early stage yet it is one of the leading causes of irreversible blindness within the United States.

 In its advanced form, symptoms include:

  • Blurred or hazy vision
  • Severe eye and head pain
  • Sudden sight loss

Glaucoma does tend to run in the family. If members of your family have glaucoma, you are at a higher risk of getting glaucoma compared to the rest of the population. Consequently, it is very important that individuals get a comprehensive eye exam and follow up with their primary physicians. Early detection through complete eye exams is the key to protecting your vision from damage caused by glaucoma. Treatment options include eye drop medication, SLT laser treatments, surgery.

At NY Vision Group we have the most technologically advanced equipment needed to diagnose, assess and monitor glaucoma. This equipment includes:

  • Optic Nerve imaging with nerve fiber analysis
  • Tonometry
  • Automated Visual Field
  • OCT- RNFL machine
  • VEP machine
  • Specular Microscopy
  • Pachymeter

Call 718-805-0700 to book your appointment.

Help us spread the word about how important the health of your eyes is!!

#GlaucomaAwarenessMonth #NYVisionGroup #PatientCareIsPriority


NY Vision Group is pleased to announce that for the seventh year in a row, Dr. Harry Koster has been named a New York Super Doctor.  You can read more about his accomplishments in the May 13, 2018 special supplement to the New York Times.  The selection process for Super Doctors is a rigorous multi-step process. First Super Doctors creates a pool of candidates based on nominations from local physicians (doctors may not self-nominate).  Super Doctors' research staff also contributes to the pool based on its "star search credentials".  Candidates are evaluated based on multiple indicators of peer recognition and professional achievement, including experience, professional activities, leadership positions, board certifications, honors and awards, and other outstanding achievements. Then nominees are then grouped into specialties and reviewed by a blue ribbon panel made up of the doctors who, in each specialty, received the highest scores in the nomination and evaluation steps.  Each panelist reviews and evaluates a list of nominees in their area.  Final selection to the Super Doctors list is based on the total points a doctor receives from the nominations, research and blue ribbon panel review steps. Only the highest-scoring doctors are included in the Super Doctors list.  Here is a link to his Super Doctors webpage:


According to the American Adademy of Ophthalmlogy, the United States FDA has approved Johnson & Johnson's new light-adaptive contact lenses. These lenses include a photochromic filter that adjusts to the amount of light entering the eye.  Therefore these lenses automatically darken in bright sunlight and return to a more regular tint in nomal light.

These soft lenses are appropriate for healthy individuals with myopia or hyperopia, and those with certain degrees of astigmatism.  Each disposable lens can be worn daily for up to two weeks. However, Dr. Koster warns that while the lenses appear to filter blue light and block UV rays, they are not a subsitute for sunglasses because they do not completely cover the eye.

Source: Anni Griswold, American Academy of Ophthalmology News Release, April 11, 2018.

Cataract Surgery May Help You Live Longer!

According to a huge new study of 74,044 women age 65 and older, all of whom had cataracts, the 41,735 women who had their cataracts removed had a 60% lower risk of death than those women who did not.[i]

A cataract is a clouding of the lens which forms gradually with age and is the most frequent cause of vision loss for people over 40.  Cataract surgery in which the clouded lens is removed and replaced with a new lens is the most common solution to cataracts and is the most frequently performed operation in the US.  In fact it is considered one of the most successful surgery in the US today with over a 98% success rate. 

Not only does cataract surgery improve vision, it appears to improve longevity.  When people can see better, “they can move and get more exercise”, according to Dr. Anne L. Coleman, one of the study’s authors.  Visual contrast improves so they are more likely to take their medications correctly and avoid accidents, whether from falling or during driving.

Dr. Koster of NY Vision Group advises not to wait too long once a cataract develops. The longer you wait, the more dense the cataract becomes and the more difficult the operation to remove it.  Furthermore, he notes, the sooner you have cataract surgery the sooner you can take advantage of the quality of life improvements Dr. Coleman mentions.

Recent advances in cataract surgery have made the procedure safer, faster and more effective.  What used to be a surgery done under general anesthesia in a hospital is now down on an outpatient basis in a procedure lasting approximately 10 minutes.  Moreover, new lens options allow for multifocal vision or the correction of astigmatism.

[i] Association of Cataract Surgery with Mortality in Older Women. Victoria L. Tseng, MD, PhD; Rowan T. Chlewboski, MD; Fei Yu. PhD; et al JAMA Ophthalmology 2018;126 doi/jamaophthalmology.2017.4512

Does Poor Vision Lead to Poor Cognition?

A growing number of studies suggest that poor vision may lead to a decline in cognitive ability.  The latest study published in JAMA Ophthalmology found that among a representative sample of 2975 older Americans, and a second sample of 30, 202 Medicare beneficiaries, poor vision was associated with poor cognition.[1]  

While the study didn’t prove that vision loss caused cognitive decline, according to one of the authors, Dr. Suzann Pershing, “intuitively it makes sense that the less engaged people are with the world, the less cognitive stimulation they receive and the more likely their cognitive function will decline.”  The number of Americans with poor vision is expected to double by 2050 so this study highlights the importance of vision screening to identify patients with eye disease to potentially decrease decreased cognition.  The JAMA study also noted that hearing loss has also been shown to be associated with cognitive decline and dementia.[2]

Dr. Koster and the American Academy of Ophthalmology strong recommend vision screening for the older population owing to the quality of life impact of available treatments for vision problems and now the potential to prevent poor cognition.


[1] Stephanie P. Chen, BS; Jay Bhattacharya, MD, PhD; Suzann Pershing, MD, MS. Association of Vision Loss with Cognition in Older Adults. JAMA Ophthalmol. 2017;135(9):963-970. Published online: August 17, 2017.

[2] Lin FR. Hearing Loss and Cognition Among Older Adults in the United States. J Gerontol A Biol Sci Med Sci.2011;66(10):1131-1136.




NY Vision Group is pleased to announce that we have opened a new location to better serve our patients in Brooklyn. Our brand new, state-of-the-art facility is located at 279 Wyckoff Avenue, Brooklyn, NY 11237.  Dr. Harry Koster, our Harvard-trained, board-certified corneal specialist has performed over 15,000 LASIK procedures and leads up a team of doctors focused on clearing up your vision. We provide comprehensive eye care from contact lens fittings to all vision correction procedures and accept all major insurances.

Call 718 805 0700 to make an eye appointment. The new office is just 3 short blocks from the L train's Myrtle-Wyckoff Avenue stop.


Our Tribeca office at 37 Murray Street in lower Manhattan, and our Queens office at 119-15 Atlantic Avenue, Richmond Hill, remain open to continue to fully serve those neighborhoods.




Keep active to stay healthy! Dr. Koster and NY Vision Group don't just promote healthy eyes, we promote healthy lifestyles and this year NY Vision Group/Koster Vision Correction are primary sponsors for Fuoriclasse Racing, a New York-based amateur cycling team. The team practices most mornings in Central Park and races all over New England on the weekends.  We are proud to support this dedicated group of athletes. 


 New Femtosecond Cataract Laser

In our mission to provide patients with the best possible vsion, we pride ourselves on having the most advanced technology and procedures available, combined with superior surgical skills.  To further this mission, we have acquired the new Femtosecond Cataract Laser.

This revolutionary technology allows us to use the laser to make all your cataract incisions, correct astigmatism and soften your cataract just prior to the actual cataract removal. 

Femtosecond-laser assisted cataract surgery is designed to provide the safest, most precise method for the removal of a cataract. Below are samples of the capsular opening the Femto laser makes to permit access to the cataract. The laser is approximately 10x more accurate than manually performing the same task (as demonstrated by the second set of images)  

 Femtosecond laser capsulotomy samples

Cataract surgeon (manual) capsulotomy samples


Dr. Harry Koster, One of America's Top Ophthalmologists.

Harry Koster, MD, a board-certified, Harvard-trained ophthalmologist, has been named one of America's Top Ophthalmologists by Consumers' Research Council of America, an independent research team.  He was selected based on his experience, training and professional associations. The Consumer's Research Council of America does not accept fees, donations or advertising from any individual, proefessional, corporation or association.

Dr. Koster is pictured above on the PR Newswire/Reuters screen in Times Square, New York.


NY Vision Group is please do announce that it is the first ophthalmic practice in Manhattan to acquire the WaveLight® EX 500 Laser.  This laser is the most technologically advanced vision correction laser available in the U.S. and permits us to provide,  in the comfort and convenience of our Manhattan office, a customized wave-front optimized treatment for each of our LASIK patients.

In the past, every LASIK patient received essentially the same type of laser treatment. The WaveLight® EX 500's technology is different.  With it, we can create a personalized treatment plan for each patient, accounting for the specific shape and individual attributes of each eye. It is also one of the safest, fastest and most accurate laser available in the United States.  Combined with Dr. Koster's 20 years of refractive surgery experience, this superior technology assures the best care possible for our patients.