1. Use of optical coherence tomography, fluorescein angiography    and   indocyanine green angiography in a screening clinic for wet age-related macular degeneration.

Talks J, Koshy Z, Chatzinikolas K
The British journal of ophthalmology 91(5):600-1, 2007 May

2. Digit preference in Goldmann applanation tonometry: the hedgehog effect.

Buller AJ, Chatzinikolas K, Giannopoulos N, Nair J, Kelleher SH, Raj SD, Roy K, Naylor G.
American journal of ophthalmology 140(3):527-9, 2005 Sep

3. Ferrara intrastromal corneal rings for the correction of keratoconus.

Siganos D, Ferrara P, Chatzinikolas K, Bessis N, Papastergiou G.
Journal of cataract and refractive surgery 28(11):1947-51, 2002 November

4. Intra-stromal Implant Produces Encouraging Results in Hyperopia

D.Siganos MD, PhD, A.Nigam PhD, K.Chatzinikolas MD, N.Bessis  D.Opt, G.Papastergiou MD
EUROTIMES (ESCRS)  - Page 18, Volume 6, Issue 7, OCTOBER 2001

5. New Intracorneal ring segments Reduce Irregular Astigmatism in Keratoconus - First European Results

D.Siganos, K.Chatzinikolas, N.Bessis, G.Stefanoudakis, Dr. P.Ferrar
EUROTIMES (ESCRS) - Page 15, 29- Volume 6, Issue 6, September 2001

6. The findings from visual fields and the colour vision discrimination of Diabetic patients

Paterakis N., Chounda M., Sioras A., Bapha M., Chatzinikolas K., Vienopoulos S., Goritsa A., Stavrakas E.
<<Greek Annals of Ophthalmology>> Hellenic Ophthalmological  Society
Vol. 12 (38)-ISSUE 1, Jan -April 2001

7. Cataract operation in Diabetic Patients

M.Chouda, N.Paterakis, A.Goritsa, K.Chatzinikolas, E.Stavrakas
Ophth. Department- Thriassio General Hospital-Athens-Greece
«Greek Annals of Ophthalmology» by the Hellenic Ophthalmological  Society
Vol. 10 (37)-Issue 2, Page 203-206, May-August 2000, Athens, Greece