Below, I present my published first author peer-reviewed scientific papers:

1. Akuffo KO, Asare AK Yelbert EE, Dukhi N, Kobia-Acquah E,Addo EK, Agyei-Manu E, Brusah T, & Asenso PA. Job satisfaction and its associated factors among opticians in Ghana: a cross-sectional study. Human Resources for Health. 2021; 19:68. https://doi.org/10.1186/s12960-021-00612-0
2. Akuffo KO, Sewpaul R, Darrah S, Dukhi N, Kumah DB, Agyei-Manu E, Addo EK, Asare AK, Osei Duah I Jr, Reddy P. Vision loss, vision difficulty and psychological distress in South Africa: results from SANHANES-1. BMC Psychology. 2021;9(1):66. https://doi.org/10.1186/s40359-021-00558-x
3. Akuffo KO, Agyei-Manu E, Kumah DB, Danso-Appiah A, Mohammed AS, Asare AK, Addo EK. Job satisfaction and its associated factors among optometrists in Ghana: a cross-sectional study. Health and Quality of Life Outcomes. 2021;19(1):1-0. https://doi.org/10.1186/s12955-020-01650-3
4. Akuffo KO, Asare AK, Sewpaul R, Dukhi N, Kumah DB, Agyei-Manu E, Addo EK, Reddy P.  Eye care utilization among diabetics in the South African National Health and Nutrition Examination Survey (SANHANES-1): a cross-sectional study. BMC Res Notes. 2020;13(1):407. 
5. Akuffo KO, Sewpaul R, Dukhi N, Asare AK, Kumah DB, Addo EK, Agyei-Manu E, Reddy P. Eye care utilization pattern in South Africa: results from SANHANES-1. BMC Health Serv Res. 2020;20(1):756. Published 2020 Aug 17. doi:10.1186/s12913-020-05621-8
6. Akuffo KO, Abdul-Kabir M, Agyei-Manu E, Tsiquaye JH, Darko CK, Addo EK. Assessment of availability, awareness and perception of stakeholders regarding preschool vision screening in Kumasi, Ghana: An exploratory study. PLoS One. 2020;15(4):e0230117. Published 2020 Apr 17. doi:10.1371/journal.pone.0230117
7. Akuffo KO, Beatty S, Peto T, Stack J, Stringham J, Kelly D, Leung I, Corcoran L, Nolan JM. The Impact of Supplemental Antioxidants on Visual Function in Nonadvanced Age-Related Macular Degeneration: A Head-to-Head Randomized Clinical Trial. Invest Ophthalmol Vis Sci. 2017
8. Akuffo KO, Nolan JM, Stack J, Power R, Kirwan C, Moran R, Corcoran L, Owens N, Beatty S. The Impact of Cataract, and Its Surgical Removal, on Measures of Macular Pigment Using the Heidelberg Spectralis HRA+OCT MultiColor Device. Invest Ophthalmol Vis Sci. 2016
9. Akuffo KO, Nolan JM, Peto T, Stack J, Leung I, Corcoran L, Beatty S. Relationship between macular pigment and visual function in subjects with early age-related macular degeneration. Br J Ophthalmol. 2016
10. Akuffo KO, Beatty S, Stack J, Peto T, Leung I, Corcoran L, Power R, Nolan JM. Concordance of Macular Pigment Measurement Using Customized Heterochromatic Flicker Photometry and Fundus Autofluorescence in Age-Related Macular Degeneration. Invest Ophthalmol Vis Sci. 2015
11. Akuffo KO, Nolan JM, Howard AN, Moran R, Stack J, Klein R, Klein BE, Meuer SM, Sabour-Pickett S, Thurnham DI, Beatty S. Sustained supplementation and monitored response with differing carotenoid formulation in early age-related macular degeneration. Eye (Lond). 2015
12. Akuffo KO, Nolan J, Stack J, Moran R, Feeney J, Kenny RA, Peto T, Dooley C, O'Halloran AM, Cronin H, Beatty S. Prevalence of age-related macular degeneration in the Republic of Ireland. Br J Ophthalmol. 2015
13. Akuffo KO, Beatty S, Stack J, Dennison J, O'Regan S, Meagher KA, Peto T, Nolan J. Central Retinal Enrichment Supplementation Trials (CREST): design and methodology of the CREST randomized controlled trials. Ophthalmic Epidemiol. 2014

Below, I present my contributing peer-reviewed scientific papers:

1. Frempong BK, Amalba A, Donkor N, Akuffo KO. Regulatory compliance among over-the-counter medicine sellers facilities within the Upper East Region of Ghana. J of Pharm Policy and Pract 14, 72 (2021). https://doi.org/10.1186/s40545-021-00363-2
2. Dao F, Djonor SK, Ayin CTM, Adu GA, Sarfo B, Nortey P, Akuffo KO, Danso-Appiah A. Burden of malaria in children under five and caregivers’ health-seeking behaviour for malaria-related symptoms in artisanal mining communities in Ghana. Parasites Vectors 14, 418 (2021). https://doi.org/10.1186/s13071-021-04919-8
3. Mensah-Debrah A, Amissah Arthur KN, Kumah DB, Akuffo KO, Osei Duah I, Bascaran C. Situational analysis of diabetic retinopathy treatment Services in Ghana. BMC Health Serv Res. 2021 Jun 17;21(1):584. https://doi.org/10.1186/s12913-021-06608-9
4. Addo EK, Akuffo KO, Sewpaul R, Dukhi N, Agyei-Manu E, Asare AK, Kumah DB, Awuni M, Reddy P. Prevalence and associated factors of vision loss in the South African National Health and Nutrition Examination Survey (SANHANES-1). BMC ophthalmology. 2021 Dec;21(1):1-5. https://doi.org/10.1186/s12886-020-01714-4
5. Hirst RJ, Setti A, De Looze C, Akuffo KO, Peto T, Kenny RA, Newell FN.The effect of eye disease, cataract surgery and hearing aid use on multisensory integration in ageing. Cortex. 2020; 133: 161-176.  https://doi.org/10.1016/j.cortex.2020.08.030
6. Asare AK, Akuffo KO, Kumah DB, Agyei-Manu E, Darko CK, Addo EK. Prevalence and pattern of amblyopia in a rural hospital in Ghana. Strabismus. 2020;1-9. doi:10.1080/09273972.2020.1779319
7. Kobia-Acquah E, Owusu E, Akuffo KO, Koomson NY, Pascal TM. Career aspirations and factors influencing career choices of optometry students in Ghana. PLoS One. 2020;15(5):e0233862. doi:10.1371/journal.pone.0233862
8. Bhuachalla BN, McGarrigle CA, O'Leary N, Akuffo KO, Peto T, Beatty S, Kenny RA. Orthostatic blood pressure variability is associated with lower visual contrast sensitivity function: Findings from The Irish Longitudinal Study on Aging. Experimental gerontology. 2019 May 1;119:14-24.
9. Bhuachalla BN, McGarrigle CA, O'Leary N, Akuffo KO, Peto T, Beatty S, Kenny RA. Orthostatic hypertension as a risk factor for age-related macular degeneration: Evidence from the Irish longitudinal study on ageing. Exp Gerontol. 2018
10. Moran R, Beatty S, Stack J, O'Halloran AM, Feeney J, Akuffo KO, Peto T, Kenny RA, Nolan JM. The Relationship Between Plasma Concentrations of Lutein and Zeaxanthin with Self-Reported and Actual Prevalence of AMD in an Irish Population-Based Sample. Curr Eye Res. 2018
11. Kelly D, Nolan JM, Howard AN, Stack J, Akuffo KO, Moran R, Thurnham DI, Dennison J, Meagher KA, Beatty S. Serum and macular response to carotenoid-enriched egg supplementation in human subjects: The Egg Xanthophyll Intervention Clinical Trial (EXIT). Br J Nutr. 2017
12. Nolan JM, Power R, Stringham J, Dennison J, Stack J, Kelly D, Moran R, Akuffo KO, Corcoran L, Beatty S. Author Response: Comments on Enrichment of Macular Pigment Enhances Contrast Sensitivity in Subjects Free of Retinal Disease: CREST - Report 1. Invest Ophthalmol Vis Sci. 2016
13. Nolan JM, Power R, Stringham J, Dennison J, Stack J, Kelly D, Moran R, Akuffo KO, Corcoran L, Beatty S. Enrichment of Macular Pigment Enhances Contrast Sensitivity in Subjects Free of Retinal Disease: Central Retinal Enrichment Supplementation Trials - Report 1. Invest Ophthalmol Vis Sci. 2016
14. Moran R, Nolan JM, Stack J, O’Halloran AM, Feeney J, Akuffo KO, Kenny RA, Beatty S. Non-dietary correlates and determinants of plasma lutein and zeaxanthin concentrations in the Irish population. J Nutr Health Aging 2016
15. Kumah DB, Akuffo KO, Abaka-Cann JE, Ankamah E, Osae EA. Interpupillary Distance Measurements among Students in the Kumasi Metropolis. Optom Open Access 2016.
16. Kumah DB, Akuffo KO, Affram DE, Ankamah E, Osae EA. Ergonomic Challenges of Employees Using Computers at Work in a Tertiary Institution in Ghana. Optom Open Access 2016
17. Ní Bhuachalla B, McGarrigle CA, Akuffo KO, Peto T, Beatty S, Kenny RA. Phenotypes of orthostatic blood pressure behaviour and association with visual acuity. Clin Auton Res. 2015
18. Kelly D, Coen RF, Akuffo KO, Beatty S, Dennison J, Moran R, Stack J, Howard AN, Mulcahy R, Nolan JM. Cognitive function and its relationship with macular pigment optical density and serum concentrations of its constituent carotenoids. J Alzheimers Dis. 2015
19. Nolan JM, Loskutova E, Howard A, Mulcahy R, Moran R, Stack J, Bolger M, Coen RF, Dennison J, Akuffo KO, Owens N, Power R, Thurnham D, and Beatty S., The impact of supplemental macular carotenoids in Alzheimer's disease: a randomized clinical trial. J Alzheimers Dis. 2015
20. Kumah DB, Akuffo KO, Abaka-Cann JE, Affram DE, Osae EA. Prevalence of Overweight and Obesity among Students in the Kumasi Metropolis. J Nutr Metab. 2015
21. Sabour-Pickett S, Beatty S, Connolly E, Loughman J, Stack J, Howard A, Klein R, Klein BE, Meuer SM, Myers CE, Akuffo KO, Nolan JM. Supplementation with Three Different Macular Carotenoid Formulations in Patients with Early Age-Related Macular Degeneration. Retina 2014
22. Nolan, J. M., Loskutova, E., Howard, A. N., Moran, R., Mulcahy, R., Stack, J., Bolger M., Dennison J., Akuffo K.O., Owens N., Thurnham D.I., and Beatty, S., Macular Pigment, Visual Function, and Macular Disease among Subjects with Alzheimer's Disease: An Exploratory Study. J Alzheimers Dis. 2014
23. Smolarek-Kasprzak P, Nolan JM, Beatty S, Dennison J, Akuffo KO, Kuchling R, Stack J, O'Regan G. Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device. J Ophthalmol. 2014

Below, I present my contributions at scientific conferences in my research field:

1. Antwi A., Mohammed A.K., Akuffo K.O., Antwi-Adjei E.K., Amponsah J.K., and Darko C. K., Visual outcomes and patient satisfaction after Laser in situ Keratomileusis (LASIK) in Ghana, Proceedings of the American Academy of Optometry and 3^rd World Congress of Optometry Joint Meeting, Orlando, USA, Oct. 23 - 27, 2019.

2. Asare A. K., Akuffo K.O., Kumah D. B., Agyei-Manu E., Darko C. K., and Addo E., Pattern of Amblyopia in a Rural Hospital in Ghana, Proceedings of the American Academy of Optometry and 3^rd World Congress of Optometry Joint Meeting, Orlando, USA, Oct. 23 - 27, 2019.

3. Akuffo K.O., Kumah D. B., Asare A. K., Agyei-Manu E., Addo E., and Darko C. K., Childhood Blindness Insights: Amblyopia in Rural Ghana, Proceedings of the Connecting Minds Africa Conference, Nairobi, Kenya, Sept. 25 - 27, 2019.

4. Akuffo K.O., Mohammed A.K., and Tsiquaye J.H., Availability, Awareness and Perception of Stakeholders Regarding Preschool Vision Screening in Ghana, Proceedings of the American Academy of Optometry Annual Meeting, San Antonio, USA, Nov. 7 - 10, 2018.

5. Darko C.K., Mohammed A.K., and Akuffo K.O., Near Vision Correction Coverage Among Sewing Professionals of Presbyopia Age in the Oforikrom Municipality, Proceedings of the Convention of Biomedical Research Ghana (COBREG), UHAS Main Campus, Ho, Ghana, Aug. 2-3, 2018.

6. Moran, R., Stack, J., O’Halloran, A.M., Akuffo, K., Kenny, R.A., Feeney, J., Cronin, H., Beatty, S., and Nolan, J.M. Non-dietary determinants of plasma lutein and zeaxanthin concentrations in the Irish population, Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 8-10, 2015.

7. Kuchling, R., O’Regan, G., Nolan, J.M., Dennison, J., Akuffo, K., Stack, J., Beatty, S. A comparison of visual acuity and contrast sensitivity measurements obtained using a computer generated algorithmic test (Multiquity®) and a conventional computer display system (Thompson test chart 2000 Xpert), Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 8-10, 2015.

8. Nolan, J.M., Power, R., Stack, J., Akuffo, K., Dennison, J., Kelly, D., Corcoran, L., Peto, T., Beatty, S. Central Retinal Enrichment Supplementation Trials (CREST): REPORT 1, Proceedings of the Macular Carotenoid Conference 2015, Downing College, Cambridge, UK, July 8-10, 2015.

9. Akuffo K.O., Stack J., Beatty S., Peto T., Leung I., and Nolan J.M., Macular pigment and visual function in early age-related macular degeneration: CREST randomized clinical trial, Proceedings of the Waterford Institute of Technology Research Day, Main Auditorium, Cork Road, Waterford, Ireland, 28 April, 2015.

10. Akuffo, K., Stack, J., Nolan, J.M., Peto, T., Leung, I., Corcoran, L., Power, R., and Beatty, S., Comparison between macular pigment measurement using customized heterochromatic flicker photometry and dual-wave autofluorescence in early age-related macular degeneration, Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 8-10, 2015.

11. Power, R., Kelly, D., Coen, R.F., Akuffo, K., Beatty, S., Dennison, J., Moran, R., Stack, J., Howard, A.N., Mulcahy, R., and Nolan, J.M., The relationship between macular pigment optical density and cognitive function in the CREST study, Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 8-10, 2015.

12. Nolan J., Stack J., Akuffo K, Howard A., and Beatty S., Supplementation with three different macular carotenoid formulations in patients with early AMD: Results after 36 months of supplementation, Proceedings of the International Carotenoid Symposium, Park City Resort, Salt Lake, Utah, USA, June 29-July 4, 2014.

13. Moran R., Johnson E., Stack J., Akuffo K., Loskutova E., Beatty S., and Nolan J., The relationship between dietary intake of lutein(L), zeaxanthin(Z) and their concentrations in serum: Introduction of a novel L/Z dietary screener, Proceedings of the International Carotenoid Symposium, Park City Resort, Salt Lake, Utah, USA, June 29-July 4, 2014.

14. Akuffo K.O., Dennison J.L., O'Regan S., Beatty S., and Nolan J.M., Central Retinal Enrichment Supplementation Trials (CREST): Design and Methodology, Proceedings of the Association for Research in Vision and Ophthalmology Annual Meeting, Seattle Washington, USA, May 5-9, 2013.

15. Akuffo K.O., Nolan J., Moran R., Peto T., and Beatty S., Prevalence of sight-threatening ocular pathology in Ireland: The Irish Longitudinal Study on Ageing, Proceedings of the TILDA Scientific Advisory Board Meeting, Trinity College, Dublin, Republic of Ireland, on May 16-17, 2013.

16. Beatty S., Akuffo K.O., Stack J., Howard A.N., and Nolan J.M., Supplementation with Three Different Macular Carotenoid Formulations in Patients with Early AMD: Most Report 2, Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 10-12, 2013.

17. Akuffo K.O., Moran R., Beatty S., Peto T., Nolan J., Kenny R.A., Cronin H., Prevalence of Sight-Threatening Ocular Pathology in Ireland: The Irish Longitudinal Study on Ageing, Proceedings of the Macular Carotenoid Conference, Downing College, Cambridge, UK, July 10-12, 2013.

18. Affram D.E., Kumah D.B. and Akuffo K.O., Computer Workstation Design: An Ergonomic Challenge to Administrative Employees at KNUST, Proceedings of the Fifth Ghana Biomedical Convention Conference, Noguchi Memorial Institute for Medical Research, Legon, Accra, Ghana, July 30- Aug. 1, 2012.

19. Onumah B., Kumah D.B. and Akuffo K.O., Ocular Morbidity Among Fire Service Personnel in the Kumasi Metropolis, Proceedings of the Fifth Ghana Biomedical Convention Conference, Noguchi Memorial Institute for Medical Research, Legon, Accra, Ghana, July 30- Aug. 1, 2012.

20. Kumah, D.B., Abaka-Cann, J.E., and Akuffo, K., Interpupillary Distance Measurements among students in the Kumasi Metropolis, Proceedings of the Fourth Ghana Biomedical Convention Conference, College of Science, KNUST, Kumasi, Ghana, July 27-29, 2011

21. Kumah, D.B., Abaka-Cann, J.E., and Akuffo, K., Prevalence of Obesity and Overweight among students in the Kumasi Metropolis, Proceedings of the Fourth Ghana Biomedical Convention Conference, College of Science, KNUST, Kumasi, Ghana, July 27-29, 2011