📚 Practical Manual
Students Digital Log Book — National Diploma in Dispensing Opticianry
Students Digital Log Book
A publication of the Optometrists and Dispensing Opticians Registration Board of Nigeria (ODORBN)
📅 14-Week Laboratory Exercises
1
Week 1: Geometrical Behaviour of Light, Ray Diagram, Mirror & Lens Image Formation and Prism
Obtainable Score: 30 marks
2
Week 2: Specular Reflection and Refraction, Lens Materials, Lens Curvature and Magnification
Obtainable Score: 30 marks
3
Week 3: Types of Lenses, Lens Classification and Refraction Materials
Obtainable Score: 25 marks
4
Week 4: Lens Classification and Neutralization, Minimum Lens Thickness
Obtainable Score: 45 marks
5
Week 5: Interpupillary Distance Measurements and Vertical Height Measurements
Obtainable Score: 25 marks
6
Week 6: Facial Measurements, Frame Measurements Using the Boxing System
Obtainable Score: 36 marks
7
Week 7: Frame Materials, Identification of Frame Types, Frame Adjustment and Repairs
Obtainable Score: 50 marks
8
Week 8: Lens Enhancement and Spectacle Prescriptions Verification
Obtainable Score: 40 marks
9
Week 9: Lensometry
Obtainable Score: 50 marks
10
Week 10: Lens Clock, Lens Caliper, Hole Drilling Machine, Grooving, Polishing Machine and Frame Warmer
Obtainable Score: 35 marks
11
Week 11: Ophthalmic Plier, Screw Driver, Automatic Edging Machine and Its Accessories
Obtainable Score: 68 marks
12
Week 12: Optical Cross, Rx Writing and Transposition
Obtainable Score: 50 marks
13
Week 13: Decentration and Prentice Rule
Obtainable Score: 35 marks
14
Week 14: Minimum Blank Size, Advance Frame Adjustment, Prescription Form
Obtainable Score: 40 marks
Important Notice
Attendance Requirement: For a student to qualify for the Board Examination, he/she must have attended 75% of the laboratory exercises.
Assessment: The cumulative mark of this laboratory exercise constitutes 25% of the final Board Examination.
Responsibility: Students are responsible for carrying this manual and ensuring it is submitted to the Head of Department at the end of the 14 weeks.