How are Mirrors Applicable to the Optometry Field?

Figure 3.1: A Phoropter. Adapted from: https://th.bing.com/th/id/R.7327cf31a62b9f414ac3149684204ff7?rik=DuA04ub9C2QTBQ&riu=http%3a%2f%2fwww.goldenvisionclinic.com%2fwp-content%2fuploads%2f2014%2f09%2fphoropter.jpg&ehk=nRzHmADDJBHXc8KW%2fwyHNECIWP%2fGbHQwIdWNxktShRI%3d&risl=&pid=ImgRaw&r=0

So how do mirrors help?

Mirrors help to reflect light during eye check ups so the optometrist does not have to keep shifting equipment in order to check a specific portion of the eye. (Mirrors often work only in a limited wavelength range, i.e., they exhibit the wanted reflectivity only within that range.) (Done by Anders, no reference)

Figure 3.2: Diagram of a concave mirror. Adapted from: https://avantierinc.com/resources/technical-article/understanding-concave-convex-mirrors/

Concave mirrors

Some mirrors are concave which helps to increase the size of a specific portion of the eye, aiding the optometrist to get a more detailed look during the checkup. (Done by Anders, no reference)

Figure 3.3: Diagram of a convex mirror. Adapted from: https://avantierinc.com/resources/technical-article/understanding-concave-convex-mirrors/

Convex mirrors

Some mirrors are convex which helps the optometrist to get a better view of the surroundings of a specific portion of the eye as it can then allow the optometrist to get a better idea of how large a certain eye disease has spread or how large an infection is. (Done by Anders, no reference)

Figure 3.4: HRS1015-P01 Prism Mirror Mounted using a KM100PM Kinematic Prism Mount and PM4 Clamping Arm. Adapted from: https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_ID=10007

Prism mirrors

Prism mirrors are also used in ophthalmoscopes as they allow Total Internal Reflection (TIR) to occur, which is compulsory for guiding light onto a selected surface and redirecting it onto the optometrist’s eye. The prism mirror is a sharper way of redirecting light compared to coated reflective surfaces which may not be as clear. (Microsoft. (2025). Copilot (GPT-4) [Large Language Model], n.d.)

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