• Public health audiology
• Occupational hearing loss
• Hearing conservation in industrial and educational settings Aural rehabilitation
• Hearing impairment in children (Audiological and Speech-Language aspects)
• Teaching/learning/assessment aspects of speech & hearing degree programmes.

Publications in peer-reviewed journals

• Ileperuma, L.D. Weerasinghe, V.S, Wickremasinghe, A.R.Auditory Brainstem Response for Sri Lankan children under 5 years: Normative data. Ceylon Journal of Otolaryngology.(2021). 

• Ileperuma, L.D. Subasinghe, I.A.Hearing status and noise exposure levels of workers at a laundry plant in Sri Lanka. Audiology and Speech Research. 18(2):95-10.(2020)

• Ileperuma, L.D. & Pillay, M. Community-Based Participatory Research in Hearing Health Care - A Preliminary Study in Sri Lanka. Oral presentation at the Annual American Speech-language and Hearing Convention, New Orleans, USA, 2022.
• Madushani, I.,Ileperuma, L.D., Udugama, L. Poster presentation at the Annual American Speech-language and Hearing Convention, New Orleans, USA, 2022.
• Ileperuma, L.D. & de Silva, M.D.K. Introduction of a competency-based evaluation framework to assess clinical skills in undergraduates of BSc (Hons) in speech and hearing sciences in audiology. Presented at the Ruhuna Quality Assurance Sessions, Ruhuna University, Matara, 2022.
• Ranathunga, L.C & Ileperuma, L.D. Self-ear cleaning practices and associated risk of ear injuries and ear-related symptoms among students in University of Kelaniya, Sri Lanka. Poster presented at the Annual Conference of the South African Speech-language and Hearing Association, Virtual Conference 2021. South Africa
• Jayathilake, C.L.,Ileperuma, L.D., Colonne, U. Auditory dysfunctions among patients with mild traumatic brain injury in the North Colombo Teaching Hospital Poster presented at the at the Annual American Speech-language and Hearing Convention, San Diego, USA, 2020. San Diego, USA

• Jayatissa, T.,Ileperuma, L.D. A survey on the impact of communication to employment encountered by individuals with hearing impairment. Poster presented at the at the Annual American Speech-language and Hearing Convention, San Diego, USA, 2020. San Diego, USA

• Ileperuma, L.D. Effectiveness of a vocal hygiene programme among primary school teachers in Matara, Sri Lanka. Poster presented at the at the Annual American Speech-language and Hearing Convention, Orlando, USA. November, 2019

• Athapattu, T.M., Ileperuma, L.D. (2019). Sensorineural hearing loss in patients with type 2 Diabetes Mellitus between 45 and 55 years in a tertiary health care center in Sri Lanka. Oral presentation at the young Researcher’s Symposium, Faculty of Medicine, University of Kelaniya, Ragama, March 2019.

• Ileperuma, L.D. Knowledge, practices, hearing-related symptoms among students exposed to leisure noise of a Sri Lankan University. Poster presented at the Annual American Speech-language and Hearing Convention, Boston, USA. November, 2018.

• Ileperuma, L.D.Hearing status among 20-45-year-old bus drivers and conductors of the Kadawatha bus station, Sri Lanka.  Poster presented at the Annual American Speech-language and Hearing Convention, Boston, USA. November, 2018.

• Subasinghe, R.A.I.A., Ileperuma, L.D.Hearing status and noise exposure levels of workers at a washing plant in Dankotuwa, Sri Lanka. Poster presented at the Canadian Academy of Audiology Conference, Ottawa, Canada. October, 2017.

• Ileperuma, L.D,Devapaksha, D.P.A.E., Siriwardhana, D. Subjective evaluation of noise sources and associated ailments among teachers in primary schools in Sri Lanka. Poster presented at the10th Asia Pacific Conference on Speech, Language and Hearing, Narita, Japan. September, 2017.

• Ileperuma, L.D,Weerasinghe, V.S, Wickremasinghe, A.R. Establishing normative threshold data on Auditory Brainstem Response for Sri Lankan children under 5 years. Poster presented at the Annual American Speech- language and Hearing Association Convention, Denver, USA. November, 2015.

• Dantanarayana, N.D, Ileperuma, L.D, Siriwardhana, J.D.D. Awareness on excessive noise exposure, hearing protection and situations, perceived symptoms of noise exposure among grade 12 students of a selected government school in the Colombo district, Sri Lanka. Poster presented at the Annual American Speech- language and Hearing Association Convention, Denver, USA. November, 2015

• Committee member, Ethics Review Committee, Faculty of Medicine 2023-present
• Member of the Library Committee of the Faculty of Medicine, 2010-2020 & 2023    
• Committee member, Medical Faculty Quality Assurance Cell 2021
• Member of the Senate, University of Kelaniya, December 2020-December 2021
• The Leave and Award Committee, University of Kelaniya, December 2020-December 2021
• Member of the Management Committee, Faculty of Medicine, December 2020-December 2021

• University of Kelaniya Senate Honors for high quality research and publishing in international indexed journals -  2022
• Excellence in student teaching Year 2 & Year 3 in Audiology in the BSc Speech and Hearing Sciences Programme- 2020/2021
• Excellence in student teaching Year 2 & Year 3 in Audiology in the BSc Speech and Hearing Sciences Programme- 2019/2020
• Co-authoring the best oral presentation at the young Researcher’s Symposium, Faculty of Medicine, University of Kelaniya, Ragama, March 2019. (Sensorineural hearing loss in patients with type 2 Diabetes Mellitus between 45 and 55 years in a tertiary health care center in Sri Lanka

• Teaching
• Research
• Clinical supervision

• Ileperuma, L.D., Geeganage, V.P., de Silva, M.D.K., A survey on the availability of resources, existing services and current audiological practices followed by Audiologists in Sri Lanka.

• Recipient of Higher Education for the Twenty First Century (HETC) scholarship-2011 for MPhil/PhD Programme