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.


All About Keratoconus

All about keratoconus

Have you been diagnosed with keratoconus? Want to learn more about the eye condition? If so, you have come to the right place. In this blog post, Mark Mandel, M.D., corneal specialist at Optima Eye, explains what keratoconus is and how it can be treated.

What is Keratoconus?

Keratoconus is a progressive eye condition in which the cornea thins.  Over time, the cornea begins to bulge into a cone-like shape instead of maintaining its normal round shape. This cone shape deflects light as it enters the eye on its way to the light-sensitive retina, causing vision problems such as blurred vision, distorted vision, glare, increased sensitivity to light and mild eye irritation. People with keratoconus often have difficulty driving, using a computer and reading.

Keratoconus affects two out of every 1,000 individuals. In its early stages, the eye condition may be hard to detect, and if left untreated, it can eventually lead to permanent vision loss. Keratoconus can affect one or both eyes and often begins during a person’s teens or early 20s.

Risk Factors for Keratoconus

It is not entirely clear yet what causes keratoconus, but known risk factors for the eye condition include:

  • Genetic predisposition
  • Overexposure to UV rays
  • Excessive eye rubbing
  • Chronic eye irritation
  • History of poorly fitted contact lenses

Treatment for Keratoconus

In the early stages of keratoconus, prescription glasses or contact lenses can help treat the condition. Often, as the condition progresses and the cornea continues to thin, glasses can no longer correct vision while contacts may become impossible to wear due to the bulging shape of the cornea.

For advanced stages of keratoconus, Dr. Mandel may recommend vision correction surgery with Intacs. Intacs are tiny plastic inserts placed in the mid-periphery of the cornea. The plastic segments helps reshape the cornea, which helps the contact lens to fit better.

Dr. Mandel offers vision correction surgery with Intacs for patients with keratoconus. In fact, he was the first surgeon in Northern California to perform Intacs surgery. Sometimes, if Intacs and contact lenses cannot correct the vision, a corneal transplant may restore vision.

Contact Us Today

To learn more about keratoconus or to find out if you are a suitable candidate for vision correction surgery using Intacs or a corneal transplant, schedule a one-on-one appointment with us. Please contact Optima Eye by emailing us at

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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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

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