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Ophthalmology

Trabeculectomy

Though constantly flushed and renewed, the overall pressure of aqueous is constant in a healthy eye’s anterior chamber. Too little or too much fluid can cause permanent damage. The physician places an ocular speculum in the patient’s eye, and accesses the anterior chamber through an incision through the limbus (the corneal-scleral juncture). To promote better drainage of fluid, the physician removes a partial thickness portion of the ring of meshlike tissue at the iris-scleral junction (the trabecular meshwork), and a scleral trap door is left open so that aqueous may flow through the new channel into the space between the conjunctival and the sclera or cornea (bleb). The physician closes the incision with sutures and may restore the intraocular pressure with an injection of water or saline. A topical antibiotic or pressure patch may be applied.

YAG laser treatment

The patient initially had extracapsular cataract surgery in which the posterior shell of the lens was not removed from the eye. But the capsule and/or the membrane adjacent to it (the anterior hyaloid) has since become opaque and must be destroyed in this new surgery. After a topical anesthetic is applied to the eye, the pupil is dilated. A number of YAG laser shots are focused to a point on the capsule, cutting it. Bursts from the YAG open a flap in the capsule, resulting in immediate improvement in vision. Multiple sessions may be needed to create an adequate opening in the lens capsule

Cataract removal with insertion of intraocular lens prosthesis

Extracapsular cataract extraction (ECCE) is when the anterior shell and the nucleus of the lens capsule are both removed, leaving the posterior shell of the lens capsule in place. The physician inserts a lid speculum between the patient’s eyelids and makes an incision in the corneal-scleral juncture (the limbus). To enhance the flow of fluids in the eye, the physician may punch a hole in the iris. Using a cutting and suction or ultrasonic device, the physician removes the lens in parts: first the anterior lens, then the inner, hard nucleus. The clear, posterior capsule remains. The physician injects a bubble of air into the anterior chamber to protect the cornea. The physician guides the intraocular implant into the eye. The haptics (securing attachments) lodge into the ciliary sulcus or the lens capsule, occupying the exact position of the original cataract. The physician may close the incision with sutures and may restore the intraocular pressure with an injection of water or saline. A topical antibiotic or pressure patch may be applied.

Ophthalmology Specialists

Dr. Jerome Peters graduated from University of Pittsburgh School of Medicine. Dr. Peters specializes in the field of ophthalmology and is prepared to diagnose, treat and perform various types of surgeries for diseases, injuries, or trauma of the eye. Dr. Peters may treat disorders such as glaucoma, corneal tumors, cataracts, retinal disorders, conjunctivitis, astigmatism and ocular tumors, among others.

Valli Muthappan, MD – Ophthalmologist Dr. Valli Muthappan is a board-certified ophthalmologist specializing in cataract and corneal surgeries. She received her undergraduate degree in chemistry magna cum laude from Northwestern University, and then went on to medical school at Washington University in St. Louis, where she was inducted into the Alpha Omega Alpha honors society. She did her internship at California Medical Center and ophthalmology residency at the Wilmer Eye Institute at Johns Hopkins University. She then completed a fellowship in corneal and refractive surgery at the Moran Eye Center at the University of Utah. She sees patients in Murrysville and Greensburg.

Daniel Vittone, MD – Ophthalmology Dr. Daniel Vittone graduated with his medical degree in Ophthalmology from the University of Pittsburgh, School of Medicine and did his undergraduate work at the University of Notre Dame. He performed his Ophthalmology residency at the University of Pittsburgh Eye and Ear Institute. Dr Vittone specializes in the latest refractive procedures to treat farsightedness, nearsightedness, and astigmatism. Other specialties include the laser treatment of glaucoma and diabetic retinopathy, as well as the medical evaluation of retinal disease and macular degeneration.

Michael Vittone, MD – Ophthalmology Dr. Michael Vittone joined the practice of Vittone Eye Associates in July 2006, after completing an ophthalmology residency at the University of Pittsburgh Eye and Ear Institute. Prior to that, he was an Internal Medicine specialist in the area. He has special interests in cataract surgery and retinal disease including diabetes and age related macular degeneration. He has performed several thousand cataract surgeries, laser procedures and intravitreal injections for these problems. He graduated with his medical degree in Ophthalmology from the University of Pittsburgh, School of Medicine.

Aaron Wang, MD – Ophthalmology Dr. Wang received his medical degree in Ophthalmology from Stanford University School of Medicine. He did his Internship at Riverside Methodist Hospital and Residency at John Hopkins Hospital Wilmer Eye Institute. Dr. Wang will be performing eye surgery at Aestique this fall.