Ellis, William,  1942- <br/><br/>
Keratotomy surgery for myopia, hyperopia and astigmatism / 
by William Ellis ; with a foreword by Svyatoslav N. Fyodorov. 
 - El Cerrito :  Eye Center of Northern California,  1991. 
 - 323 p. :  ill. ;  29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astigmatism--surgery.<br/>Keratotomy, Radial.<br/>Hyperopia--surgery.<br/>Refractive Errors--surgery.