If you need a more accessible version of this website, click this button on the right. Switch to Accessible Site


You are using an outdated browser. Please upgrade your browser to improve your experience.

Close [x]

Filtering surgeries are the standard treatments to control intraocular pressure. A sclerotomy ( an incision into the white outer covering of the eye) is performed to gain access to the inner layers of the eye, to create a drainage pathway from the anterior chamber ( the fluid-filled space in the eye behind the cornea and in front of the iris) to the external surface of the eye. This occurs under the conjunctiva (the thin,transparent tissue that covers the outer surface of the eye) allowing fluid to flow into a "bleb", (tissue that forms a fluid reservoir over a surgically-created hole )where it is absorbed. The procedure can be penetrating or non-penetrating, depending upon whether or not the anterior chamber is entered. 

The non-penetrating deep sclerectomy , or NPDS, has become an increasingly popular alternative to standard trabeculectomy( removal of a piece of tissue in the drainage angle of the eye, creating on opening)  throughout the world. Largely due to its lower risk of post-operative complications and side effects. This is an elegant procedure with practical utility, particularly in settings where any period of intraoperative or post-operative anterior chamber stability might compromise the long term surgical outcome. The risks of hypotony ( an eye pressure too low ), collapsed anterior chamber, hyphema ( bleeding ), and choroidal effusion( a build up of fluid between the blood vessel layer that nourishes the overlying retina and the sclera, the white outer covering of the eye )are significantly lower post-operatively.
NPDS does not penetrate or enter the anterior chamber. The scleral wall is not punctured, instead a patch of sclera is skimmed to a level that allows fluid percolation and control of eye pressure. NPDS is especially valuable for patients whose operative eye is the only one with macular function, and with patients who have experienced eye trauma.                                                                                       

Exclusive Offer

COVID-19 UPDATE and your appointment please click here.

Dear Patient,
As a valued patient of the office of William E. Sponsel M.D., we appreciate the trust you place in us and want to inform you about how we are addressing the coronavirus (COVID-19) situation. We are closely monitoring events in our local community and continuously updating our policies and protocols as a result of new information.

Our highest priority is to keep all of our patients and staff as safe as possible. At the recommendation of CDC, we will be screening patients prior to allowing them to enter the facilities. If you have been exposed to anybody that has tested positive for COVID-19, or experiencing fever, cough, or flu-like symptoms please call to re-schedule your appointment.

Should you have an appointment you will be asked to call the office and stay in your vehicle/outside until our patient coordinator calls you to enter for your appointment. They will meet you at the suite, you will be required to fill out a questionnaire about any current medical symptoms so that we do not expose other patients and staff.

We will take your temperature upon entering, if you have a fever, cough, or experiencing any flu-like symptoms the urgency of your appointment will be reassessed by Dr. Sponsel to determine whether or not you will be seen at that time or re-scheduled. Please look for upcoming information regarding COVID-19, as the situation is changing daily.

If you have any questions or concerns about your appointment, please call our office at (210)223-9292, or after hours answering service at (757)-278-1657.
Thank you for your continued trust and loyalty as we work together to fight this virus.

Dr. Sponsel M.D. and staff.

We accept most insurance plans!

Office Hours

Day Morning Afternoon
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
9am 9am 9am 9am 9am Closed Closed
2pm 5:30pm 6:00pm 6:00pm 5:30pm Closed Closed