Multifocal trial frame system

A multifocal trial frame system comprising:

• means, shaped to engage the head of a wearer, for supporting lenses;
• distance prescription lens means attached to said support means;
• and
• multifocal lens means attached to said support means and including a neutral portion and an insert portion having a close-viewing power, said insert portion being incorporated into said neutral portion to form a continuous, unitary lens with said neutral portion, whereby said lenses cooperate to simulate multifocal eyeglasses of a predetermined prescription and configuration.

A multifocal trial frame system comprising:

• means, shaped to engage the head of a wearer, for supporting lenses;
• distance prescription lens means attached to said support means;
• and
• multifocal lens means attached to said support means and including a neutral portion and an insert portion having a close-viewing power, said neutral portion being shaped and positioned to overlie said distance prescription lens means substantially completely, said insert portion being incorporated into said neutral portion.

A method of simulating a look and feel of a multifocal lens prescription utilizing a trial frame system comprising the steps of:

• selecting a trial frame shaped to engage the head of a subject;
• selecting a pair of distance prescription lenses of predetermined power and attaching said lenses to said frame;
• selecting a pair of multifocal lenses of a predetermined power and style and attaching them to said frame adjacent to said distance prescription lenses, each of said multifocal lenses including a neutral portion and an insert portion having a close-viewing prescription, said insert portion being incorporated into said neutral portion to form a continuous, unitary lens unit with said neutral portion, whereby said lenses cooperate to simulate multifocal eyeglasses of a predetermined prescription and configuration;
• and
• placing said trial frame with said lenses on the head of said patient.

A method of simulating a look and feel of a multifocal lens prescription utilizing a trial frame system comprising the steps of:

• selecting means, shaped to engage the head of a patient, for supporting lenses;
• selecting distance prescription lens means of a predetermined prescription and attaching said distance prescription lens means to said support means;
• selecting multifocal lens means of a predetermined prescription and attaching said multifocal lens means to said support means, said multifocal lens means including a neutral portion and an insert portion having a close-viewing power, said insert portion being incorporated into said neutral portion to form a continuous, unitary lens with said neutral portion, whereby said lenses cooperate to simulate multifocal eyeglasses of a predetermined prescription and configuration;
• and
• placing said support means with said lenses on the head of said patient.

A multifocal trial frame system comprising:

• a trial frame shaped to engage the head of a wearer;
• a distance prescription lens unit attached to said trial frame;
• a multifocal lens unit attached to said trial frame and including a neutral portion and an insert portion having a close-viewing power, said insert portion being incorporated into said neutral portion to form a continuous, unitary lens unit with said neutral portion, whereby said lenses cooperate to simulate multifocal eyeglasses of a predetermined prescription and configuration;
• said trial frame including a boss depending downwardly therefrom for attachment by said distance prescription lens unit and said multifocal lens unit, said boss being laterally adjustable relative to said trial frame and including a thumbscrew rotatably mounted within said trial frame and engaging said boss;
• a lens bracket for attaching said distance prescription lens unit and said multifocal lens unit to said boss, said lens bracket including a rim assembly for receiving said distance prescription lens unit and said multifocal lens unit, a rim assembly support plate, attached to said rim assembly and having an opening shaped to receive said boss therethrough, and a clamp for clamping said boss to said support plate, whereby said lens bracket is adjustably attachable to said boss and is displaceable relative to said trial frame;
• said clamp including a set screw threaded through said support plate and shaped to urge said boss against said support plate, said boss being oriented relative to said trial frame to provide a 5.degree. pantoscopic angle;
• and
• said rim assembly including first and second rims shaped to receive said prescription distance lens unit, said first rim being positioned adjacent to the eye of a wearer, and said second rim shaped to receive said multifocal lens unit, said second rim being positioned on a side of said prescription distance lens unit opposite said eye of said wearer, said first and second rims being positioned relative to each other such that a geometric center of said prescription distance lens unit is decentered relative to a geometric center of said multifocal lens unit inwardly and upwardly relative to said trial frame, such that said center of said distance lens means is approximately 4 mm inward and 1 mm upward relative to said geometric center of said multifocal lens unit.

A multifocal trial frame system comprising:

• a trial frame shaped to engage the head of a wearer;
• a plurality of pairs of distance prescription lenses, said pairs having different dioptric powers and being attachable to said frame;
• a plurality of pairs of multifocal lenses, said pairs having different dioptric powers and being attachable to said frame adjacent to said distance prescription lenses, each of said multifocal lenses including a neutral portion and an insert portion having a close-viewing prescription, said insert portion being incorporated into said neutral portion to form a continuous, unitary lens unit with said neutral portion;
• whereby said lenses cooperate such that a multiplicity of predetermined multifocal eyeglass prescriptions and configurations can be simulated.

A multifocal trial frame system for simulating a plurality of multifocal lens styles comprising:

• a trial frame shaped to engage the head of a wearer;
• a pair of distance prescription lenses having a selected dioptric power and being attachable to said frame;
• a plurality of pairs of multifocal lenses of a same, selected dioptric power, said pairs of multifocal lenses being attachable to said frame adjacent to said distance prescription lenses, said multifocal lenses including neutral portions and insert portions being of different shapes and said insert portions being incorporated into said neutral portions to form a plurality of continuous, unitary lens units with said neutral portions;
• whereby said lenses cooperate such that a multiplicity of predetermined multifocal eyeglass styles can be simulated by attaching various ones of said plurality of pairs of multifocal lenses to said trial frame.