Sullivan, C M <br/><br/>
Progressive addition and variable focus lenses: a review.  [electronic resource] 

 -  Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)  1988 
 - 402-14 p.  digital 
<br/><br/> Publication Type: Journal Article; Review 
<br/><br/><label>ISSN: </label>0275-5408 
<br/><br/><label>Standard No.: </label>10.1111/j.1475-1313.1988.tb01177.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eyeglasses<br/>Humans<br/>Optics and Photonics<br/>Optometry--trends