Bhootra, Ajay Kumar creator text New Delhi Jaypee Brothers Medical Publishers The Health Sciences Publisher 2019 monographic xvi, 128 p. : ill. ; 21.6 cm. includes bibliography and index. Rehabilitation sciences Ophthalmology Clinical refraction Retinoscopy guide Refraction guide Visual display Optometry lenses RCR&AHS 617.755 BHO 9789352708628 (pbk)