ABO-NCLE PRACTICAL EXAM 2026 MASTER
STUDY EXAM
◉ Ophthalmic Optics Domain. Answer: Includes 25 questions on
optics terminology and prescriptions.
◉ Prescription Irregularities. Answer: Common issues include
missing signs and incomplete notation.
◉ Lens Characteristics. Answer: Factors include thickness,
absorption, and index of refraction.
◉ Lens Types. Answer: Includes single vision and multifocal lenses.
◉ Aspheric Lenses. Answer: Lenses designed to reduce distortion
and thickness.
◉ Digital Surfacing. Answer: Advanced lens manufacturing for
customized optics.
◉ Measurement Systems. Answer: Methods for measuring lens
dimensions and power.
,◉ Usable Accommodation. Answer: Range of vision with different
lens powers.
◉ Neutralization of Lenses. Answer: Determining lens power using
specific techniques.
◉ Prentice's Rule. Answer: Calculates prism induced by lens
decentration.
◉ Vertical Imbalance. Answer: Difference in lens power between
eyes vertically.
◉ Vertex Compensation. Answer: Adjustment for power changes at
different distances.
◉ Centration. Answer: Alignment of optical centers in lenses.
◉ Power in Oblique Meridians. Answer: Lens power variation at
angles to principal meridians.
◉ Anisometropia. Answer: Significant power difference between
two eyes.
,◉ Aniseikonia. Answer: Difference in perceived image size between
eyes.
◉ Anterior Adnexa. Answer: Structures surrounding the eye,
including eyelids.
◉ Aqueous Humor. Answer: Fluid in the anterior segment of the eye.
◉ Vitreous Humor. Answer: Gel-like substance filling the posterior
segment.
◉ Scotoma. Answer: Partial loss of vision in a visual field.
◉ Macular Degeneration. Answer: Deterioration of the central
portion of the retina.
◉ Refractive Errors. Answer: Impairments in focusing light on the
retina.
◉ Diplopia. Answer: Double vision caused by muscle imbalance.
◉ Fitting Triangle. Answer: Concept for aligning eyewear to facial
features.
, ◉ Frame Parameters. Answer: Measurements determining fit and
comfort of eyewear.
◉ Low Vision Aids. Answer: Devices designed to assist individuals
with vision impairment.
◉ Corneal Reflex Pupilometer. Answer: Device for measuring pupil
response to light.
◉ OSHA. Answer: Occupational Safety and Health Administration
regulations.
◉ ANSI. Answer: American National Standards Institute guidelines.
◉ FDA. Answer: Food and Drug Administration regulations for
safety.
◉ EPA. Answer: Environmental Protection Agency standards.
◉ HIPAA. Answer: Health Insurance Portability and Accountability
Act privacy rules.
STUDY EXAM
◉ Ophthalmic Optics Domain. Answer: Includes 25 questions on
optics terminology and prescriptions.
◉ Prescription Irregularities. Answer: Common issues include
missing signs and incomplete notation.
◉ Lens Characteristics. Answer: Factors include thickness,
absorption, and index of refraction.
◉ Lens Types. Answer: Includes single vision and multifocal lenses.
◉ Aspheric Lenses. Answer: Lenses designed to reduce distortion
and thickness.
◉ Digital Surfacing. Answer: Advanced lens manufacturing for
customized optics.
◉ Measurement Systems. Answer: Methods for measuring lens
dimensions and power.
,◉ Usable Accommodation. Answer: Range of vision with different
lens powers.
◉ Neutralization of Lenses. Answer: Determining lens power using
specific techniques.
◉ Prentice's Rule. Answer: Calculates prism induced by lens
decentration.
◉ Vertical Imbalance. Answer: Difference in lens power between
eyes vertically.
◉ Vertex Compensation. Answer: Adjustment for power changes at
different distances.
◉ Centration. Answer: Alignment of optical centers in lenses.
◉ Power in Oblique Meridians. Answer: Lens power variation at
angles to principal meridians.
◉ Anisometropia. Answer: Significant power difference between
two eyes.
,◉ Aniseikonia. Answer: Difference in perceived image size between
eyes.
◉ Anterior Adnexa. Answer: Structures surrounding the eye,
including eyelids.
◉ Aqueous Humor. Answer: Fluid in the anterior segment of the eye.
◉ Vitreous Humor. Answer: Gel-like substance filling the posterior
segment.
◉ Scotoma. Answer: Partial loss of vision in a visual field.
◉ Macular Degeneration. Answer: Deterioration of the central
portion of the retina.
◉ Refractive Errors. Answer: Impairments in focusing light on the
retina.
◉ Diplopia. Answer: Double vision caused by muscle imbalance.
◉ Fitting Triangle. Answer: Concept for aligning eyewear to facial
features.
, ◉ Frame Parameters. Answer: Measurements determining fit and
comfort of eyewear.
◉ Low Vision Aids. Answer: Devices designed to assist individuals
with vision impairment.
◉ Corneal Reflex Pupilometer. Answer: Device for measuring pupil
response to light.
◉ OSHA. Answer: Occupational Safety and Health Administration
regulations.
◉ ANSI. Answer: American National Standards Institute guidelines.
◉ FDA. Answer: Food and Drug Administration regulations for
safety.
◉ EPA. Answer: Environmental Protection Agency standards.
◉ HIPAA. Answer: Health Insurance Portability and Accountability
Act privacy rules.
