Mark R. Mandel, MD

Mark R. Mandel, MD has been selected by hundreds of eye doctors and other physicians to perform LASIK, corneal transplant, and cataract surgery on themselves, their families, and their office staff.

Mark R. Mandel, MD

As a sub-specialist Dr. Mandel has performed over 70,000 LASIK procedures and 20,000 cataract/IOL procedures. He has been serving Bay Area patients since 1983.

Mark R. Mandel, MD

We are proud to offer state of the art technology for measuring the eye and performing the latest in advanced surgical techniques… always striving to achieve the best possible outcomes.

Mark R. Mandel, MD

Graduate of Oxford University, UCLA School of Medicine, Fellowship trained cornea transplant and refractive specialist. Chosen by more surgeons to perform surgery on themselves and their families.


Refractive Lens Exchange

Also serving San Jose, Hayward, Castro Valley & Concord

Refractive Lens Exchange (Lensectomy) or Clear Lens Extraction

Correct focusing of images in the eye is determined by the focusing power of the cornea and the lens of the eye in relation to the length of the eye. Either the curvature of the cornea or the human lens or both can be changed to correct errors of focusing (called refractive errors) such as nearsightedness, farsightedness, or astigmatism. A “cataract” is a clouding of the natural lens in the eye and modern treatment of cataract involves removing this clouded lens and replacing it with an artificial lens called a lens implant. Exactly the same operation can be done even when the lens is clear (not clouded) in order to change the power of the eye as a way to correct farsightedness. This is called Refractive Lens Exchange or Clear Lens Extraction.

For a relatively high amount of farsightedness (hyperopia), Dr. Mark Mandel recommends refractive lens replacement. Depending on individual considerations, it may be the best procedure for any degree of hyperopia and perhaps for some (rare) cases of extreme myopia. Refractive lens replacement is less likely to produce side effects such as starburst, glare, halos, and decreased night vision than any of the corneal procedures. Most patients have none of these side effects after refractive lens replacement, but they remain possibilities especially if a multifocal implant is placed in the eye at the time of lens removal.

Since refractive lens exchange requires surgery inside the eye and not just on the cornea, it can be associated with some potentially severe complications rarely if ever seen following any of the corneal procedures such as LASIK or PRK These include, but are not limited to:

  1. Infection inside the eye (endophthalmitis). We estimate the probability of this to be less than 1 in 3,000, but if it occurs it is very serious and can cause loss of vision or blindness if unsuccessfully treated.
  2. Retinal detachment. We estimate the probability of this to be about 1 in 1,000 cases in hyperopic patients, but considerably more likely in myopes and especially high myopes where it may reach a likelihood of as high as 4 to 5 in 100. Retinal detachments tend to occur in high myopes even if they have no surgery. The probability of retinal detachment increases if a capsulotomy (see “6” below) is needed. A capsulotomy is necessary in 30% to 50% of young patients who undergo lens replacement. Some retinal detachments can be successfully treated, but not all, and this can result in severe loss of vision or blindness.
  3. Cystoid Macular Edema. This is a swelling in the layers of the center part of the retina that can occur after any type of surgery inside the eye, including refractive lens replacement. It seems more likely with increasing age. It may occur to some degree in several out of every 1000 eyes. Fortunately it usually gets better with time, but it can delay the return of good vision and sometimes does not get better and can result in permanent decreased vision.
  4. Damage to the iris or pupil. This is not likely, but can occur. It if does, it can interfere with the best possible vision, and produce severe glare, light sensitivity, and a cosmetically displeasing appearance to the eye.
  5. Eye pressure. There is commonly some fluctuation of the eye pressure following refractive lens replacement in the first few days or weeks following surgery. Rarely the pressure can remain elevated and result in the eye condition called “glaucoma”.
  6. Need for capsulotomy. In about 1 out of 3 eyes following refractive lens replacement the “capsule” behind the implant becomes clouded to some degree. This is usually very easy to correct using the YAG laser, but having the capsule opened may increase the risk of cystoid macular edema and retinal detachment.
  7. Effect on accommodation. (See “Presbyopia” section). The ability to focus at different distances automatically in young people is done by the natural lens of the eye. Following refractive lens exchange, this ability is gone and the resulting effect must be understood. In patients near or over 40, this changing focus ability is already decreased or lost and is not generally much of an issue. It is, however, an important consideration, especially in younger people. This surgery creates “instant presbyopia” and unless it is compensated for by monovision or a multi-focal lens implant, there will be a need to use glasses for near tasks such as reading, cellphone and computer use. If you are a candidate for Refractive Lensectomy, you will be given a separate booklet to study.

Schedule a Consultation Today

During a comprehensive consultation, Dr. Mark R. Mandel will go over all of the details of the refractive lens exchange procedure, including the risks and benefits, and he can answer any questions you may have. If you are considering refractive lensectomy, consult with the professional eye surgeons at OPTIMA Ophthalmic Medical Associates. Call us today at 877-210-2020 ext. 3.

Sarah Lee shares her successful LASIK experience. Click below to enjoy her video.

Physicians and patients have traveled from all over the world to Mark R. Mandel, MD

If you would like to meet with Dr. Mandel to discuss your personal vision needs, please contact our office today to schedule a consultation.

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Laser Refractive Surgeries

Laser refractive surgery corrects focusing errors of the eye (e.g., nearsightedness, farsightedness, astigmatism) in order to improve visual sharpness and clarity. Procedures include LASIK, laser cataract surgery and refractive lens exchange.


Premium Cataract Surgery

At Optima Eye we offer premium cataract surgery. Patients can opt for laser cataract surgery and / or premium intraocular lens implants, with several options to fit your unique lifestyle.


Complete Eye Care

Dr. Mandel and his team of professionals offer a complete continuum of general eye care services to accommodate every patient’s needs — whether those needs are as simple as a routine eye exam, or as complex as laser vision correction.


Dry Eye Treatment

Dry eye syndrome, which affects more than 100 million people worldwide, can be painful and debilitating. Dr. Mandel uses several approaches to treat dry eye, ranging from medication to punctal plugs.


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Hayward Location

1237 B Street
Hayward, CA 94541

San Jose Location

455 O’Connor Drive, Suite 360
San Jose, CA 95128

Castro Valley Location

20400 Lake Chabot Road, Suite 302
Castro Valley, CA 94546

Concord Location

1401 Willow Pass Rd., Suite 100
Concord, CA 94520
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